In our previous work, die cast LA42 (Mg–4La–2.5Al–0.3Mn, wt.%) alloy with an excellent combination of thermal-conducting performance and mechanical properties was developed. This study, taking commercial die cast AZ91 (Mg-9Al-1 Zn, wt.%) alloy as a comparison, investigates the microstructure and corrosion behavior of the LA42 alloy in chloride-containing environment. The findings revealed that the

To investigate the role of pre-twins in Mg alloy sheets during warm planar deformation, the stretch forming is conducted at 200 °C. Results suggest the formability of the pre-twinned AZ31 Mg alloy sheet is enhanced to 11.30 mm. The mechanisms for the improved formability and the deformation behaviors during the planar stretch forming are systematically investigated based on the planar stress states

First principles calculation is carried out to systematically investigate the effects of transition metal elements (Ti, Zr, Ta, W) on elastic properties, hardness, surface energy, stacking fault energy, and ductility of HfC. It is found that the addition of Ti and Zr would decrease the elastic properties and hardness of HfC, while Ta and W could increase. Calculations also reveal that Ti, Zr, and W

In this study, the mechanical behavior under monotonic loads of tungsten carbide‑cobalt (WC-Co) composites is investigated extensively by analyzing (1) nanoindentation tests on WC particles and Co matrix, (2) nanowires made of WC-Co composites tested in tension and (3) micropillars made of WC-Co composites tested in compression. To this end, a novel computational framework consisting of two different

With the increasing demand for biomimetic structures in the biomedical field, ultrafast lasers have been extensively used for modifying the surfaces of alloy thin films. Herein, we propose a method entailing the use of picosecond laser ablation for modifying the surfaces of chromium–Ti nitride (CrTiN) thin films for cell culture processes. The surface roughness and ripple characteristics of the periodic

Sodium-ion batteries (SIBs) is a promising alternative for lithium-ion batteries (LIBs) due to abundant resources and low cost. Herein, a series of composites, CDC/SbSxx (xx means weight content of Sb2S3), composed from catkin derived carbon (CDC) material, possessing tube-like morphology, and Sb2S3 fine particles prepared by solvothermal method were selected as anodes for SIBs. The electrochemical

In order to improve the strength and electrical conductivity of Cu-Ni-Si alloy, the columnar crystalline C70250 copper alloy strip suffer from two deep cryogenic rolling-aging treatments with large deformation, and the relationship between the cryogenic rolling-aging process and microscopic structure, mechanical, conductive properties is studied, and the precipitation behavior is analyzed. The research

An organic-inorganic composite passivation of Zn coated NdFeB magnets was carried out using Ce-containing compound and organosilane as source materials. Effects of organosilane content on the microstructure of composite passivation layer were analyzed, and the corrosion resistance and corrosion mechanism of the passivated Zn/NdFeB specimens were deeply studied. Composition, elemental distribution,

Construction of hierarchical heterostructure is considered as a promising approach to promote photocatalytic CO2 reduction, yet the report about CdS semiconductor for photocatalytic activity is still restricted caused by its rapid charge recombination. Herein, a novel carbon dots (CDs) modified CdS hollow sphere (CDs/CdS) has been successfully synthesized by multi-step including template-assembly,

FeCoNiCrxMn (x = 0.0, 0.6, 0.8, 1.0) high-entropy alloys (HEAs) were prepared by a 3D high-energy ball-milling method. The phase structure, grain size, crystallinity, morphology, static magnetic properties, corrosion resistance, oxidation resistance and electromagnetic properties of FeCoNiCrxMn HEAs are investigated in detail by modulating Cr contents. FeCoNiCrxMn HEAs had the phase transformation

In this work, advanced capabilities of electron backscatter diffraction (EBSD) were applied to evaluate the role played dynamic recrystallization during superplastic deformation of a typical fine-grained material. It was found that the dynamic recrystallization occurred only locally and thus provided only minor contribution to microstructural evolution. Hence, the preservation of the nearly-equiaxed

The contradictory relationship between electrical conductivity (abbreviate to EC) and mechanical properties limits the development of conductive aluminum alloys obviously. Nowadays, it is a challenge to put forward a strategy to improve EC and mechanical properties of Al alloy simultaneously. In this paper, composite boron treatment, alloying treatment, hot extrusion and heat treatment were proceed

Body-centered cubic (BCC) medium-entropy alloys (MEAs) are characterized by high strength, low ductility and often high density due to containing much refractory elements. In this paper, a series of BCC Ti-Al-Nb-Zr medium-entropy alloys were constructed by adding different contents of Al to Ti67Nb16Zr17 base alloy composed of α and β phases. It is shown that an enough addition of Al can depress the

In this study, single-phase yttrium iron garnet (YIG) ferrite was synthesized by sol-gel method, which was firstly used as the insulating layer to prepare Fe/YIG soft magnetic composites (SMCs). It was demonstrated that the Fe powders were uniformly coated with the YIG ferrite for the Fe/YIG SMCs. The influence of the YIG content on the soft magnetic properties of the Fe/YIG SMCs were investigated

The suitability of determining the strain rate sensitivity (SRS) of the CoCrFeMnNi high-entropy alloy (HEA) by small punch (SP) testing has been assessed at displacement rates ranging from 0.2 to 2 mm∙min-1. The stress was found to increase as the displacement rate was raised from 0.2 to 2 mm∙min-1, whereas the plastic strain distributions were similar in all cases. However, for a higher displacement

Dual-phase Zr-based thin films synthesized by magnetron co-sputtering and showing competitive growth between amorphous and crystalline phases have been reported recently. In such films, the amorphous phase grows as columns, while the crystalline phase grows as separated cone-shaped crystalline regions made of smaller crystallites. In this paper, we investigate this phenomenon and propose a model for

Designing nanocomposite with multi-level interfaces is an effective approach to improving the microwave absorbing capability of materials. In this study, the urchin-like multiple core-shelled Co/CoS2@NC@MoS2 composites (CCM) are designed and fabricated by high-temperature pyrolysis and solvothermal process, where the structure and phase composition are affected by the migration of Co. Abundant interfaces

Metallic glasses are structurally heterogeneous on the atomic and nano scales. However, few investigations have been conducted on how the structural heterogeneities in these two scales co-evolve during annealing. In this work, the atomic and nanoscale structural heterogeneity evolution accompanying the magnetic softness is systematically discussed based on the literature and our previous synchrotron

In this paper, a novel red-emission Ca2LiScB4O10: Sm3+ phosphor system has been synthesized by a high-temperature solid-state reaction method. 50-100 nm well-distributed monoclinic Ca2LiScB4O10: Sm3+ (space group of P21/n) was confirmed by Transmission electron microscopy and SAED patterns. Rietveld refinement PXRD pattern revealed that the doping of different amounts of Sm3+ ions expanded the lattice

The influences of grain size on the deformation behavior of a metastable β-type Ti–12Mo (wt.%) alloy has been investigated by using uniaxial tensile testing, scanning electron microscopy and electron backscatter diffraction. The results reveal that the twinning-induced plasticity (TWIP) effect mediated by {332}<113>β twins occurs in this alloy when its mean grain size (d0) ranges from 49 to 104 μm

The comparable ionic-radius cation substitution provides a route to investigate the origin of the physical properties of ceramics on the local structure and electronic charge state background. In analogy to our previous work [19] of La2CuMnO6 (LCM) prepared via solid-state route, here we are reporting the effect of Zn substitution at the Cu site of LCM. The detailed structural analysis confirmed the

The precipitation behavior and strengthening effects of the Cu-0.42Cr-0.16Co alloy aged at 450 °C was investigated using atom-probe tomography, transmission electron microscopy, and hardness and electrical conductivity measurements. The results showed that the fine FCC Cr-rich precipitates with a cube-on-cube orientation relationship (OR) were formed by Cr and Co enrichment at the early aging stage

The corrosion and discharging behavior of Al-Zn-In-Mg-Ti alloy were studied at a series pressures ranged from 0.1 MPa to 13.0 MPa using weigh loss experiments, electrochemical techniques, and imaging measurements et al. Results reveal that the self-corrosion and self-discharging process of Al-Zn-In-Mg-Ti alloy live through the same three stages, which are all accelerated by hydrostatic pressure. The

The evolutions of phase transformation, magnetic and electrical transport properties with the change of Fe concentration have been systematically investigated in a series of Ni60-xFe13+xGa27 (x = 0–10) Heusler alloys. The structure and heat flow measurements reveal every sample undergoes a disordered-ordered transition from a disordered B2 structure to a L21 ordered structure, and a first-order structural

We present the effect of doping with In, V, and Cl on the values of resistivity (ρ) and mobility-lifetime (μτ) in (Cd,Mn)Te crystals grown by the Bridgman method and with diameters of 2 or 3 in. This material is investigated to use in room-temperature X-ray and gamma-ray detectors. We carried out post-growth annealing processes in cadmium vapors at 500 °C to obtain more homogeneous crystal properties

Alloying studies of Mg-Gd system alloys are an important way to improve alloy properties, reduce Gd content, and thus cost and density. Nd is excellent in promoting aging precipitation and enhancing heat resistance properties. In this work, low Gd content Mg-7Gd-xNd-0.5Zr (x = 0, 0.5, 2, 3.5 wt%) alloys were prepared by melting casting and processed by solution aging. The effects of Nd on the microstructure

The (Mo-Ta-W)-C and (Nb-Ta-W)-C carbide thin films were prepared by non-reactive magnetron co-sputtering. The (Mo-Ta-W)-C thin films exhibited the simple BCC structure with the strip-like surface morphologies and a double-layer structure for cross sections with a columnar upper layer and an featureless lower layer. In the (Mo-Ta-W)-C thin films, the metal-metal and metal-oxygen bonds were observed

In this study, we suggest a rotating closed reaction system for oxidizing Fe powder at 500 ℃. This rotation leads to the homogeneous oxidation of large amounts of Fe powder. The analysis of the oxygen content in the oxidized Fe powder shows that all oxygen gas supplied to the closed system is consumed for the oxidation of Fe powder. This indicates that the thickness of the Fe3O4 layer formed by oxidation

Crystal structures, growth characteristics, and transformation of the precipitates in a Mg-7Gd-5Y-1Nd-2Zn-0.5Zr (wt.%) alloy aged at 200 °C for various durations were investigated using transmission electron microscopy (TEM) and high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM). A detailed Mg-Gd type precipitation sequence for Mg-Gd-Y-Nd-Zn alloys was proposed as

Separation of Cu impurities from spent lithium-ion batteries (LIBs) before precipitating other valuable metals is critical to improve the quality of final products. Currently, the main process for separating Cu impurity from spent LIBs by extraction and precipitation has the disadvantage of being high cost and complicated process. In this work, the surface characteristics of spent LIBs materials before

Incoherent interphases and oxygen segregation at the grain boundaries (GBs) significantly deteriorate the strength of Mo-based alloys. In this study, a new additive, LaB6, was proposed to enhance the mechanical properties. It was found that LaB6 reacted with the matrix to generate coherent La2O3, volatile B2O3 and tiny MoB in situ during sintering. The addition of LaB6 does not increase strength by

In this study, a remarkable annealing hardening effect was detected in gradient ultrafine-grained (UFG) Mg-0.32Gd-0.11Zr (at.%) alloy sheet fabricated by sliding friction treatment (SFT). Under the precipitation-free condition, the annealed UFG structure shows an obvious hardness increment from 1.40 GPa to 1.89 GPa after 200°C heating for 12 h, which exhibits a much higher hardening response than the

In this study, InGaN/GaN heterostructures were grown on a c-plane flat sapphire substrate (FSS) by using the metalorganic chemical vapor deposition (MOCVD) technique. The flow rates of the ammonia gas varied from 9 SLM to 24 SLM for the growth of InGaN thin film, which was equivalent to the V/III ratio of 6211 to 16562. Results indicated that a higher V/III ratio promotes parasitic behavior by hydrogen

Herein, a glib method to produce g-C3N4-reinforced CdS-modified anatase TiO2 is proposed. The CdS spheres broaden the visible region absorption spectrum of TiO2 and improve the charge-transfer mechanism by reinforcing it with g-C3N4. Thus, we aim to improve the photocatalytic efficiency using ternary photocatalyst. Powder X-ray diffraction, scanning electron microscopy images are accomplished to characterize

As an important magnetic functional material, sintered NdFeB has gradually applied from mild places to environments that need to withstand impact. The reliability of materials to work in this environment has received extensive attention, but current research cannot provide corresponding support of experimental data and theoretical model for this problem yet. To tackle this, we carried out research

Here we report the synthesis of La and Ba substituted X0.5Sr0.5Co0.8Mn0.2O3 using sol–gel auto-combustion method and their investigation as a low temperature solid oxide fuel cell. Structural investigations revealed that La0.5Sr0.5Co0.8Mn0.2O3 (LSCM) crystallized out in rhombohedral perovskite structure while Ba0.5Sr0.5Co0.8Mn0.2O3 (BSCM) has hexagonal perovskite structure. Morphological analysis confirmed

High-performance microwave absorption materials are considered to be an effective solution to the increasing electromagnetic pollution. In this work, Ti3C2Tx MXene@NiFe-layered double hydroxide (NiFe-LDH) derived multi-interfacial FeNi3/TiN@nitrogen-doped carbon (NC)@magnetic multiwalled carbon nanotube composites were prepared by a hydrothermal process and subsequent carbothermal reduction. The phase