当前位置：
X-MOL 学术
›
Steel Res. Int.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
On the Significance of Thermal Deformation and Dynamic Recrystallization on Flow Behavior of 25Mn2Si2Cr Bainitic Alloy
Steel Research International ( IF 1.9 ) Pub Date : 2020-10-13 , DOI: 10.1002/srin.202000348 Ji Li 1 , Zhunli Tan 1 , Min Zhang 1 , Bo Gao 1 , Yu Tian 1 , Junxiang Wang 2 , Raja Devesh Kumar Misra 3 , Bingzhe Bai 1, 4
Steel Research International ( IF 1.9 ) Pub Date : 2020-10-13 , DOI: 10.1002/srin.202000348 Ji Li 1 , Zhunli Tan 1 , Min Zhang 1 , Bo Gao 1 , Yu Tian 1 , Junxiang Wang 2 , Raja Devesh Kumar Misra 3 , Bingzhe Bai 1, 4
Affiliation
|
Thermal deformation characteristics, dynamic recrystallization behavior, and processing map of 25Mn2Si2Cr high strength bainitic steels are elucidated during wide temperature range (850–1100 °C) and strain rate (0.1–10 s−1) from flow behavior. Thermomechanical analysis by Thermo‐Calc software indicates that microstructure during thermal deformation is austenite, which is conducive to dynamic recrystallization. Phenomenological constitutive equations of thermal deformation, dynamic recrystallization equation, and processing map are established to predict flow behavior. The experimental results indicate that deformation temperature and strain rate have significant effect on thermal deformation process. Flow stress increases with decrease in deformation temperature and increase in strain rate. Increasing deformation temperature and decreasing strain rate promote dynamic recrystallization occurrence. However, the grain size increases with increase in deformation temperature. Thermal simulations predict that optimum thermal deformation parameters are deformation temperature (950–1000 °C), strain rate (0.25–5 s−1) and deformation temperature (850–950 °C), strain rate (1–5 s−1) for processing of Mn–Si–Cr bainitic steels.
中文翻译：
热变形和动态再结晶对25Mn2Si2Cr贝氏体合金流动行为的意义
阐明了在宽温度范围（850–1100°C）和应变速率（0.1–10 s -1）下25Mn2Si2Cr高强度贝氏体钢的热变形特性，动态再结晶行为和加工图）的流动行为。通过Thermo-Calc软件进行的热力学分析表明，热变形过程中的显微组织是奥氏体，这有利于动态再结晶。建立了热变形的现象学本构方程，动态再结晶方程和加工图来预测流动行为。实验结果表明，变形温度和应变速率对热变形过程有显着影响。流动应力随着变形温度的降低和应变率的增加而增加。变形温度的升高和应变率的降低促进了动态再结晶的发生。但是，晶粒尺寸随着变形温度的升高而增加。-1）和变形温度（850-950°C），应变率（1-5s -1），用于加工Mn-Si-Cr贝氏体钢。
更新日期：2020-10-13
中文翻译：
热变形和动态再结晶对25Mn2Si2Cr贝氏体合金流动行为的意义
阐明了在宽温度范围（850–1100°C）和应变速率（0.1–10 s -1）下25Mn2Si2Cr高强度贝氏体钢的热变形特性，动态再结晶行为和加工图）的流动行为。通过Thermo-Calc软件进行的热力学分析表明，热变形过程中的显微组织是奥氏体，这有利于动态再结晶。建立了热变形的现象学本构方程，动态再结晶方程和加工图来预测流动行为。实验结果表明，变形温度和应变速率对热变形过程有显着影响。流动应力随着变形温度的降低和应变率的增加而增加。变形温度的升高和应变率的降低促进了动态再结晶的发生。但是，晶粒尺寸随着变形温度的升高而增加。-1）和变形温度（850-950°C），应变率（1-5s -1），用于加工Mn-Si-Cr贝氏体钢。
京公网安备 11010802027423号