样式: 排序: IF: - GO 导出 标记为已读
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Dynamic evolution of the T1 phase and its effect on continuous dynamic recrystallization in Al–Cu–Li alloys Int. J. Plasticity (IF 9.8) Pub Date : 2024-03-17 Kuizhao Wang, Cunsheng Zhang, Zinan Cheng, Haibin Zhao, Zijie Meng, Liang Chen, Guoqun Zhao
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Multi-scale damage mechanism of hierarchically structured high-strength martensitic steels under shock loading Int. J. Plasticity (IF 9.8) Pub Date : 2024-03-16 Zhaoguo Zhang, Sen Chen, Yifei Hong, Xuhai Li, Jian Zhang, Yong Xiao, Guoqiang Luo, Yuying Yu, Jianbo Hu
The multi-scale damage behaviors and underlying mechanisms of hierarchically structured high-strength martensitic steels are investigated via plate-impact recovery experiments, postmortem characterizations. Plate-impact experiments were conducted at compressive peak stresses ranging from approximately 5.5 to 11.0 GPa, and the tensile strain rates are ∼10 s. Significant improvement in the spall strength
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Superior strength-ductility synergy of Mg-Nd-Zn-Zr alloy rod achieved by drawing at elevated temperatures Int. J. Plasticity (IF 9.8) Pub Date : 2024-03-16 Baoxue Zhou, Xiang Wang, Jimiao Jiang, Chun Chen, Xiyuan Zhang, Jialin Niu, Jia Pei, Hua Huang, Deli Wang, Guangyin Yuan
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Atomic-scale observation and characterization of deformation twins in uniaxial tensile-deformed 120Mn13 steel Int. J. Plasticity (IF 9.8) Pub Date : 2024-03-16 Zhimin Ding, Linnan Dong, Neng Fu, Jiaoyang Sun, Yongchang Bao
High-resolution transmission electron microscope was used to observe and characterize the different formation stages of zero-strain twins in uniaxial tensile-deformed 120Mn13 steel at the atomic scale, which revealed the growth process of zero-strain twins in coarse-grained austenitic manganese steels. Here, plenty of zero-strain twins are observed in deformed 120Mn13 steel and they can be formed by
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Deformation mechanisms in the α phase of the Ti-6Al-2Sn-4Zr-2Mo titanium alloy: in situ experiments and simulations Int. J. Plasticity (IF 9.8) Pub Date : 2024-03-15 S. Hémery, A. Naït-Ali, O. Smerdova, C. Tromas
Titanium alloys are widely employed in aerospace applications due to an outstanding combination of properties. The variety of loading conditions and microstructures encountered in industrial components is urging the development of microstructure sensitive modeling capabilities. In particular, reliable predictions require a good knowledge of operating deformation mechanisms. The present study aims at
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Analysis of slip transfer across grain boundaries in Ti via diffraction contrast tomography and high-resolution digital image correlation: When the geometrical criteria are not sufficient Int. J. Plasticity (IF 9.8) Pub Date : 2024-03-15 E. Nieto-Valeiras, A. Orozco-Caballero, M. Sarebanzadeh, J. Sun, J. LLorca
High-resolution digital image correlation was employed to analyze the occurrence of slip transfer across grain boundaries in pure Ti. The microstructure was characterized in 3D through diffraction contrast tomography and electron backscatter diffraction. The prismatic slip activity was captured in the shear strain maps at different strains, and the grain boundaries were classified according to the
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Temperature dependent deformation behavior and texture evolution in AA6082 aluminum alloy: An integrated experimental and crystal plasticity simulation approach Int. J. Plasticity (IF 9.8) Pub Date : 2024-03-14 Oleksandr Lypchanskyi, Chen-Chun Chiu, Faisal Qayyum, Grzegorz Korpała, Sergey Guk, Ching-Kong Chao, Ulrich Prahl
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Deformation behavior, twinning propensity model, and twinnability map for laser powder bed fused austenitic steel homogenized by hot isostatic pressing Int. J. Plasticity (IF 9.8) Pub Date : 2024-03-11 Hongzhuang Zhang, Shujie Cao, Bing Li, Filippo Berto, Guian Qian, Changyou Li
Hot isostatic pressing (HIP) has emerged as a highly effective and extensively adopted technique for eliminating intrinsic flaws, mitigating residual stress, and addressing microstructural anisotropy in laser powder bed fused (L-PBF) metallic materials. However, the deformation behavior, strengthening mechanism, and associated mechanistic models of HIPed l-PBF austenitic steel remain largely unclear
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Exceptional strength-ductility synergy at room and liquid nitrogen temperatures of Al7.5Co20.5Fe24Ni24Cr24 high-entropy alloy with hierarchical precipitate heterogeneous structure Int. J. Plasticity (IF 9.8) Pub Date : 2024-03-11 Chenliang Chu, Weiping Chen, Liran Huang, Hao Wang, Ling Chen, Zhiqiang Fu
The study of alloys exhibiting noteworthy strength-ductility synergy at ambient and cryogenic temperatures has been a persistent area of interest in materials engineering. This interest extends to the recent development of high-entropy alloys (HEAs). The current investigation delves into the impact of diverse thermo-mechanical treatments on the phase and microstructure evolution in a face-centered
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Cross-slip of extended dislocations and secondary deformation twinning in a high-Mn TWIP steel Int. J. Plasticity (IF 9.8) Pub Date : 2024-03-09 Shucheng Shen, Pan Xie, Cuilan Wu, Jing Luo, haifeng Ye, Jianghua Chen
Twinning-induced plasticity (TWIP) steels have become important materials in industry owing to the good combination of strength and ductility and high strain hardening rate. The excellent mechanical properties are highly related to the glide of dislocation and deformation twinning. However, the cross-slip behavior of the extended dislocation and the mechanism of deformation twinning are still controversial
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Crack nucleation and dislocation activities in titanium alloys with the strong transverse texture: Insights for enhancing dwell fatigue resistance Int. J. Plasticity (IF 9.8) Pub Date : 2024-03-07 Runchen Jia, Weidong Zeng, Zibo Zhao, Boning Wang, Hanwen Chen, Jianwei Xu, Qingjiang Wang
Cold dwell sensitivity of near α titanium alloys has posed a significant challenge to the engineering safety within the aerospace industry. However, there exists inconsistency regarding the critical facet formation mechanism between basal and prismatic nucleation. A key revelation in this paper is that the controversy surrounding the facet nucleation plane primarily arises from variations in texture:
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Virtual laboratory enabled constitutive modelling of dual phase steels Int. J. Plasticity (IF 9.8) Pub Date : 2024-03-06 Wencheng Liu, Xinghao Li, Ming Liu, Hao Cui, Jia Huang, Yong Pang, Jun Ma
Accurate and efficient characterization and modelling of deformation responses are critically essential in the development of advanced metal forming processes. This work presents a virtual laboratory enabled constitutive framework for modelling complex deformation responses of dual phase (DP) steels under complex stress states, based on multi-phase full-field crystal plasticity (CP) and advanced phenomenological
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Effect of pore on the deformation behaviors of NiTi shape memory alloys: A crystal-plasticity-based phase field modeling Int. J. Plasticity (IF 9.8) Pub Date : 2024-03-05 Bo Xu, Chao Yu, Chong Wang, Qianhua Kan, Qingyuan Wang, Guozheng Kang
Porous NiTi shape memory alloys (SMA) have been developed into important biomedical and damping materials. However, the effect of pore on the martensitic microstructure evolution, functional properties, and plastic deformation has not been fully clear yet. In this work, to reveal the functional properties including superelasticity (SE), elastocaloric effect (eCE), one-way shape memory effect (OWSME)
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Plastic deformation and strengthening mechanism in CoNiV medium-entropy alloy fiber Int. J. Plasticity (IF 9.8) Pub Date : 2024-03-03 Lin Deng, Ruixuan Li, Jinru Luo, Shilei Li, Xuefeng Xie, Shangshu Wu, Weiran Zhang, Peter K. Liaw, Elena A. Korznikova, Yong Zhang
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Multi-interface migration mechanism induced by carbide precipitation during the quenching-partitioning-tempering process in a high-carbon steel Int. J. Plasticity (IF 9.8) Pub Date : 2024-03-02 Hongqing Zheng, Jiazhi Zhang, Xunwei Zuo, Yonghua Rong, Jianfeng Wan, Nailu Chen
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Quantifying dislocation drag at high strain rates with laser-induced Microprojectile impact Int. J. Plasticity (IF 9.8) Pub Date : 2024-03-01 Qi Tang, Mostafa Hassani
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Deciphering non-elastic deformation in amorphous alloy: Simultaneous aging-induced ordering and rejuvenation-induced disordering Int. J. Plasticity (IF 9.8) Pub Date : 2024-02-27 Q. Hao, G.J. Lyu, E. Pineda, J.M. Pelletier, Y.J. Wang, Y. Yang, J.C. Qiao
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Uncovering origin of grain boundary resistance to irradiation damage in NiCoCr multi-principal element alloys Int. J. Plasticity (IF 9.8) Pub Date : 2024-02-27 Fusheng Tan, Jia Li, Bin Liu, Peter K Liaw, Qihong Fang
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Anisotropic ductile fracture of a stainless steel under biaxial loading: Experiments and predictions Int. J. Plasticity (IF 9.8) Pub Date : 2024-02-27 Madhav Baral, Peter W. Ripley, Yanshan Lou, Yannis P. Korkolis
The anisotropic ductile fracture behavior of a stainless steel is investigated using a combination of experiments and analysis. The material is SS-304L, an austenitic, low-carbon stainless steel, received in the form of tubes of 2.38 mm dia. and 0.15 mm thickness. The tubes are inflated under volume control in a custom apparatus. At the same time, the axial force on the tubes is kept proportional to
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Creep deformation in metallic glasses: A global approach with strain as an indicator within transition state theory Int. J. Plasticity (IF 9.8) Pub Date : 2024-02-23 L.T. Zhang, Y.J. Wang, M. Nabahat, E. Pineda, Y. Yang, J.M. Pelletier, D. Crespo, J.C. Qiao
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Modeling and simulation of dynamic compression of Bulk Metallic Glasses at room and elevated temperatures using split Hopkinson pressure bar setup Int. J. Plasticity (IF 9.8) Pub Date : 2024-02-17 Arun Kamble, Parag Tandaiya
This paper presents a modeling and simulation study of dynamic compression behavior of Bulk Metallic Glasses (BMGs) at room and elevated temperatures using the split Hopkinson pressure bar (SHPB) setup. The primary objective of this study is to develop and validate a constitutive model and simulation methodology capable of predicting the high strain rate response of BMGs at different temperatures.
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A physics-based plasticity study of the mechanism of inhomogeneous strain evolution in dual phase 600 steel Int. J. Plasticity (IF 9.8) Pub Date : 2024-02-16 Mohammad Hasan Joudivand Sarand, I. Burc Misirlioglu
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Gurson-Cohesive Modeling (GCM) for 3D Ductile Fracture Simulation Int. J. Plasticity (IF 9.8) Pub Date : 2024-02-16 Jihyuk Park, Soondo Kweon, Kyoungsoo Park
A (GCM) is proposed to investigate 3D ductile fracture accounting for the void growth, coalescence, and complete failure phenomena. The proposed model idealizes the ductile fracture process as continuum damage evolution, cohesive crack initiation, nonlinear softening along the crack surface, and complete failure. The Gurson model is employed to describe continuum damage with void growth, while the
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A forming limit framework accounting for various failure mechanisms: localization, ductile and cleavage fracture Int. J. Plasticity (IF 9.8) Pub Date : 2024-02-15 Fuhui Shen, Yannik Sparrer, Jing Rao, Markus Könemann, Sebastian Münstermann, Junhe Lian
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Coupling effect of loading mode and temperature on the deformation behaviors of TWIP β Ti alloy: From superior tensile strength-ductility synergy to low Charpy impact toughness Int. J. Plasticity (IF 9.8) Pub Date : 2024-02-15 Q. Wang, B. Sang, J.Q. Ren, C. Xin, Y.H. Zhang, Q. Gao, W.F. Liu, Z.L. Ning, J.T. Yu, X.F. Lu
The Ti-8.5Cr-1.5Sn β Ti alloy with twinning induced plasticity (TWIP) effect was selected for the quasi-static tensile and Charpy impact tests at 298 K and 77 K to determine whether the strengthening and toughening strategy by TWIP effect can be extended to the cryogenic temperature. As the impact deformation temperature decreased from 298 K to 77 K, the Charpy impact toughness decreased obviously
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Short-range ordering mechanics in FCC materials Int. J. Plasticity (IF 9.8) Pub Date : 2024-02-13 Daegun You, Orcun Koray Celebi, Gorkem Gengor, Ahmed Sameer Khan Mohammed, Wael Abuzaid, Huseyin Sehitoglu
Short-range order (SRO) has a crucial impact on the mechanical strength of metallic alloys. Recent atomistic investigations defined an average SRO and attempted to correlate it with the yield strength. We propose that the local change in SRO upon slip advance must dictate the strengthening, and we elaborate the methodology to establish the “SRO change” on a slip plane considering the Wigner-Seitz cell
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Hydride-enhanced strain localization in zirconium alloy: A study by crystal plasticity finite element method Int. J. Plasticity (IF 9.8) Pub Date : 2024-02-11 X.D. Zan, X. Guo, G.J. Weng
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Relating stress/strain heterogeneity to lath martensite strength by experiments and dislocation density-based crystal plasticity Int. J. Plasticity (IF 9.8) Pub Date : 2024-02-10 Tim Fischer, Tao Zhou, Carl F.O. Dahlberg, Peter Hedström
To enhance the fundamental understanding for micromechanical lath martensite deformation, the microstructure as well as macro- and microscopic tensile properties of as-quenched 15–5 PH stainless steel are systematically analysed depending on the austenitisation temperature. Based on electron backscatter diffraction (EBSD) and backscattered electron (BSE) analysis, it is noted that the martensite morphology
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Modeling of creep in nickel-based superalloy based on microtwinning mechanism Int. J. Plasticity (IF 9.8) Pub Date : 2024-02-10 Jingyu Zhang, Ying Liu, Yangyang Cheng, Hao Wang, Aixue Sha, Huiling Duan
Microtwinning is the dominant creep deformation mechanism of nickel-based superalloy in certain temperature and stress conditions. This study proposes a novel temperature-dependent creep constitutive model based on microtwinning mechanism, which includes the glide of 1/6<112> partial dislocations and atomic diffusion in precipitates. Both microtwinning and anti-phase boundary shearing mechanisms are
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Deformation-induced structural multiplicity of tilt boundaries facilitating the formation of two-dimensional interfacial superstructures Int. J. Plasticity (IF 9.8) Pub Date : 2024-02-09 Xiande Ma, Hongbo Xie, Shanshan Li, Weitao Jia, Yuping Ren, Gaowu Qin
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Tailoring the adiabatic shear susceptibility of pure tungsten via texture evolution Int. J. Plasticity (IF 9.8) Pub Date : 2024-02-04 Xiukai Kan, Jianguo Li, Jingui Zhong, Tao Suo
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New deformation mechanism and strength-ductility synergy in pure titanium with high density twin Int. J. Plasticity (IF 9.8) Pub Date : 2024-02-04 Shuaizhuo Wang, Zhaohua Hu, Zhaowen Huang, Bo Gao, Xuefei Chen, Jiajun Hu, Yuntian Zhu, Yusheng Li, Hao Zhou
The simultaneous optimization of strength and ductility in high-performance metallic materials has long been a challenge for researchers, characterized by an inherent trade-off between the two properties. Despite a vast body of research aimed at overcoming this challenge, achieving a desirable balance between strength and ductility remains elusive. Here, we present a novel approach that involves the
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Shock compression of porous copper containing helium: Molecular dynamics simulations and theoretical model Int. J. Plasticity (IF 9.8) Pub Date : 2024-02-03 Bao Wu, XinXin Wang, HaoNan Sui, Qiang Bao, AnMin He, HaiQuan Sun, Qiang Wu, Pei Wang
Shock compression of porous copper containing helium is studied via non-equilibrium molecular dynamic simulations. The results show that the shock propagation exhibits an elastic-plastic double-shockwave structure at low shock velocity. The shock Hugoniot elastic limit increases with higher gas concentration, and decreases with larger porosity, while almost independent of the shock velocity. The back-and-forth
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Quantifying contribution of hierarchically correlated shear microdomains underlying creep in metallic glass Int. J. Plasticity (IF 9.8) Pub Date : 2024-02-02 F. Zhu, G.H. Xing, Yun-Jiang Wang, E. Pineda, J.C. Qiao
Investigation of the strain evolution of a CuZrAl metallic glass (MG) was conducted through creep deformation encompassing various temperature and stress conditions. The fundamental framework of atomic motion was established through hierarchically dynamic correlation. By discerning a transition in strain rate from three to two regions under cyclic loading conditions, we effectively identified the two
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Investigation of failure mechanisms in dual-phase steels through cohesive zone modeling and crystal plasticity frameworks Int. J. Plasticity (IF 9.8) Pub Date : 2024-02-02 Ilbilge Umay Aydiner, Berkehan Tatli, Tuncay Yalçinkaya
Dual-phase (DP) steels are characterized by their good formability and interesting material properties, which primarily originate from their unique composition, combining the ductile ferrite phase with the hard martensite phase. At the microscale, DP steels exhibit various fracture mechanisms that need to be investigated through proper plasticity and failure models. These mechanisms include interface
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Plasticity induced anelasticity: The atomistic origin Int. J. Plasticity (IF 9.8) Pub Date : 2024-02-02 Sanjay Manda, Saurabh Kumar, Namit N. Pai, Lokesh Soni, Ujjal Tewary, Pratyank Rastogi, Syed Asif, Ajay S. Panwar, Indradev Samajdar
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Assessment of hydrogen embrittlement behavior in Al-Zn-Mg alloy through multi-modal 3D image-based simulation Int. J. Plasticity (IF 9.8) Pub Date : 2024-01-30 Hiro Fujihara, Hiroyuki Toda, Ken-ichi Ebihara, Masakazu Kobayashi, Tsuyoshi Mayama, Kyosuke Hirayama, Kazuyuki Shimizu, Akihisa Takeuchi, Masayuki Uesugi
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Characterization and unified modelling of creep and viscoplasticity deformation of titanium alloy at elevated temperature Int. J. Plasticity (IF 9.8) Pub Date : 2024-01-25 Yong Li, Haosheng Chen, Lihua Du, Feng Yang, Ying Zhang, Dongsheng Li
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Optimization of crystal plasticity parameters with proxy materials data for alloy single crystals Int. J. Plasticity (IF 9.8) Pub Date : 2024-01-28 Shahram Dindarlou, Gustavo M. Castelluccio
Multiscale modeling approaches have demonstrated ample value in understanding, predicting, and engineering materials response. While increasing computational power has aided in modeling atomic behavior from first principles, modeling mesoscale mechanisms such as intergranular failure or crack initiation still rely strongly on correlative models. Crystal Plasticity models have been extensively used
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The influence of precipitation on plastic deformation in a high Mg-containing AlMgZn-based crossover alloy: Slip localization and strain hardening Int. J. Plasticity (IF 9.8) Pub Date : 2024-01-26 Xiuzhen Zhang, Chao Yang, Lei Meng, Zhenghao Chen, Wu Gong, Binhan Sun, Shiteng Zhao, Deliang Zhang, Yue Li, Dengshan Zhou
The distribution and partitioning of solute atoms in age-hardenable aluminum (Al) alloys markedly impact strength, ductility and failure of alloy materials, thus rendering the understanding of dislocation-obstacle (solute-rich features) interactions crucial in the development of a new class of heat-treatable Al alloys. Here, we investigate the slip mechanisms, strain localization and strain hardening
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Multi-scale defects activation in Gd18.33Tb18.33Dy18.34Co17.5Al27.5 high-entropy metallic glasses revealed by nanoindentation Int. J. Plasticity (IF 9.8) Pub Date : 2024-01-27 W. Li, X.F. Zuo, R. Liu, C.M. Pang, F. Jin, W.W. Zhu, C.C. Yuan
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Atomic irradiation defects induced hardening model in irradiated tungsten based on molecular dynamics and CPFEM Int. J. Plasticity (IF 9.8) Pub Date : 2024-01-26 Pan-dong Lin, Jun-feng Nie, Yu-peng Lu, Chang-xin Shi, Shu-gang Cui, Wen-dong Cui, Lei He
Tungsten plays a significant role in the nuclear industry, in which defects are generated upon exposure to irradiation. Irradiation-induced defects, such as dislocation loops and helium bubbles, are key factors in performance degradation, leading to irradiation hardening and embrittlement. The inner interaction between the dislocations and irradiation-induced defects directly determines the safety
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Tensile properties and microstructural evolution of 17–4 PH stainless steel fabricated by laser hybrid additive manufacturing technology Int. J. Plasticity (IF 9.8) Pub Date : 2024-01-21 Nan Li, Qiang Wang, Michael Bermingham, Wenjuan Niu, Peng Han, Nan Guo, Shenao Li
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Lithium concentration and atomic chain bridging induced strength–ductility synergy in amorphous lithiated sulfur cathodes Int. J. Plasticity (IF 9.8) Pub Date : 2024-01-24 Yuan Gao, Siyi Huang, Xiaoyan Li, Yuli Chen, Bin Ding
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A continuum scale chemo-mechanical model for multi-trap hydrogen transport in deformed polycrystalline metals Int. J. Plasticity (IF 9.8) Pub Date : 2024-01-21 Jinheung Park, Geonjin Shin, Hye-Jin Kim, Kijung Kim, Yoon Seung Chae, Seok Su Sohn, Myoung-Gyu Lee
This study presents a coupled multi-trap hydrogen diffusion and crystal plasticity model within a thermodynamically consistent framework. The developed modeling scheme incorporates the hydrogen-enhanced localized plasticity (HELP) and hydrogen-enhanced strain-induced plasticity (HESIV) based on thermodynamic considerations. The theoretical formulations are implemented in the finite element method,
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A microdamage model for FCC single crystals considering a mixed failure mechanism of slip and cleavage Int. J. Plasticity (IF 9.8) Pub Date : 2024-01-14 Ao Li, Weiping Hu, Yuanlong Yang, Kun Li, Hongyu Tian, Zhixin Zhan, Qingchun Meng
In this study, a microdamage model is newly proposed to predict the failure process of FCC single crystals. Two micro damage mechanisms, slip and cleavage, are both involved in the model. A microscopic damage variable is first defined at the slip plane scale, and a damage coupled crystal plasticity constitutive equation in a co-rotational tensor framework is then established. A damage driving force
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Deformation mechanisms of additively manufactured TiNbTaZrMo refractory high-entropy alloy: The role of cellular structure Int. J. Plasticity (IF 9.8) Pub Date : 2024-01-16 Changxi Liu, Yingchen Wang, Yintao Zhang, Lai-Chang Zhang, Liqiang Wang
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A gradient-extended thermomechanical model for rate-dependent damage and failure within rubberlike polymeric materials at finite strains Int. J. Plasticity (IF 9.8) Pub Date : 2024-01-17 L. Lamm, A. Awad, J.M. Pfeifer, H. Holthusen, S. Felder, S. Reese, T. Brepols
Rate-dependencies play a crucial role in the mechanical response of polymeric materials. Besides viscoelasticity, many polymers also show pronounced rate-dependent behaviour with respect to damage accumulating within the material. Furthermore, thermal effects and large deformations have to be taken into account when modelling the mechanical behaviour of polymers. Within this work, we propose a novel
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High–strain–rate deformation of a nanoprecipitate–strengthened dual–phase steel Int. J. Plasticity (IF 9.8) Pub Date : 2024-01-14 Yongzheng Yu, Yang Zhang, Songsong Xu, Jihong Han, Junpeng Li, Chunhuan Guo, Fengchun Jiang, Gang Zhao, Zhongwu Zhang
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Influences of the evolving plastic behavior of sheet metal on V-bending and springback analysis considering different stress states Int. J. Plasticity (IF 9.8) Pub Date : 2024-01-15 Chong Zhang, Yanshan Lou
Bending is a common forming process that covers various stress states during sheet metal forming, mainly from uniaxial to plane strain states of both tension and compression depending on the inner or outer sides of the sheet. To model the tension-compression asymmetry (TCA) at different stress states, a five stress states-sensitive (Five-SSS) yield function is proposed. The non-linear effect of stress
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Anisotropic and heterogeneous acoustoplasticity of α-Ti during ultrasonic vibration assisted compression: Modeling and experiments Int. J. Plasticity (IF 9.8) Pub Date : 2024-01-14 Haidong Zhang, Lei Deng, Yi Hao, Cheng Li, Xuefeng Tang, Pan Gong, Mao Zhang, Junsong Jin, Xinyun Wang
Introducing ultrasonic vibration (UV) into the plastic deformation process is a promising and efficient way to improve the formability of metallic materials. However, the acoustoplasticity of α-Ti with pronounced anisotropic behavior during UV-assisted deformation is still not well understood, and the underlying mechanisms associated with the ultrasonic effect on multiple slip/twinning systems remain
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Strengthening and ductilization of a refractory high-entropy alloy over a wide strain rate range by multiple heterostructures Int. J. Plasticity (IF 9.8) Pub Date : 2024-01-11 Ruixin Wang, Yu Tang, Yuanlin Ai, Shun Li, Li'an Zhu, Shuxin Bai
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A continuum damage coupled unified viscoplastic model for simulating the mechanical behaviour of a ductile cast iron under isothermal low-cycle fatigue, fatigue-creep and creep loading Int. J. Plasticity (IF 9.8) Pub Date : 2024-01-09 Michal Bartošák, Jakub Horváth
A novel continuum damage coupled unified viscoplastic model is used for simulating the stress–strain responses of SiMo 4.06 cast iron under Low-Cycle Fatigue (LCF), fatigue-creep and creep loading for temperatures up to 650 °C. The advanced constitutive model that is developed within the framework of the Chaboche model allows the simulation of various effects including strain rate sensitivity, cyclic
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A computational mechanical constitutive modeling method based on thermally-activated microstructural evolution and strengthening mechanisms Int. J. Plasticity (IF 9.8) Pub Date : 2024-01-09 Mingyu Lei, Guangpeng Sun, Guochun Yang, Bin Wen
A mechanical constitutive relationship is the basis for the design and application of structural materials, and the establishment of a mechanical constitutive relationship generally relies on experimental data. Herein a computational mechanical constitutive modeling method is proposed, in which all required parameters possess unambiguous physical interpretations and/or can be obtained from accurate
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A dislocation-based damage-coupled constitutive model for single crystal superalloy: Unveiling the effect of secondary orientation on creep life of circular hole Int. J. Plasticity (IF 9.8) Pub Date : 2024-01-04 Zixu Guo, Ziyuan Song, Haohao Liu, Daijun Hu, Dawei Huang, Xiaojun Yan, Wentao Yan
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Stress-induced detwinning/reorientation of hierarchically twinned martensite and deformation micro-mechanism in Ni52Mn27Ga17Co4 shape memory alloys: Experimental and phase-field studies Int. J. Plasticity (IF 9.8) Pub Date : 2024-01-03 L. Liang, W. Tong, X. Wang, H.Z. Hu, H.J. Wang, J. Tian, L.M. Peng
Mechanical training via cyclic loading and unloading was widely used in NiMnGa shape memory alloys (SMAs) to create single or double variant states for reducing the resistance to variant reorientation and thus achieving a maximum shape memory strain. In this work, an effort was made to reveal the deformation mechanism of a polycrystalline Ni52Mn27Ga17Co4 high-temperature SMAs consisting of non-modulated
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Distinct avalanche dynamics detected in metallic glasses with high energy state revealing the crack-like shear banding mechanism Int. J. Plasticity (IF 9.8) Pub Date : 2023-12-31 Kai Tao, Fucheng Li, Yanhui Liu, Eloi Pineda, Kaikai Song, Jichao Qiao
When a sufficiently high stress is applied to a metallic glass, causing plastic deformation, the material undergoes structural reconfiguration through dissipative slip avalanche events that release local stresses. By utilizing isothermal annealing and cold rolling techniques to tune the energy levels of metallic glasses, it has been observed that structural rejuvenation is accompanied by structural
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Migration of grain boundary triple junctions in nanocrystalline metals initiated by accumulated dislocations Int. J. Plasticity (IF 9.8) Pub Date : 2023-12-31 Qishan Huang, Wei Yang, Haofei Zhou
The evolution of grain boundary (GB) networks in polycrystalline metals depends not only on the movement of the constituent GBs but also on the migration of GB triple junctions (TJs), the latter would have strong influence on the mechanical properties of polycrystals. We investigate the migration mechanism of TJs in face-centered cubic metals using molecular dynamics simulations. The TJ migration is