高温变形孪晶对Fe-38Mn合金热剪切压缩变形过程中加工硬化行为的影响

Effect of High-Temperature Deformation Twinning on the Work Hardening Behavior of Fe-38Mn Alloy during Hot Shear-Compression Deformation.

作者信息

Sang Deli, Xin Xiaoli, Zhai Zikang, Fu Ruidong, Li Yijun, Jing Lei

机构信息

College of Materials Science and Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050047, China.

State Key Laboratory of Mechanical Behavior, System Safety of Traffic Engineering Structures, Shijiazhuang Tiedao University, Shijiazhuang 050043, China.

出版信息

Materials (Basel). 2024 Jul 24;17(15):3641. doi: 10.3390/ma17153641.

DOI:10.3390/ma17153641

PMID:39124305

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11313471/

Abstract

The effect of high-temperature deformation twinning on the work hardening behaviors of Fe-38Mn alloy during hot shear-compression deformation was investigated. The discovery of micro-shear bands and deformation twinning is significant for continuous work hardening, and this represents an important step toward gaining a complete understanding of the effect of deformation twinning on work hardening behaviors. Deformation twinning is widely acknowledged to accommodate plastic strain under cold deformation, even under severe plastic deformation. At present, the equivalent stress vs. strain curves for hot shear-compression deformation of Fe-38Mn alloy exhibit the characteristics of continuous work hardening. In addition, continuous work hardening is classified into five stages when considering high-temperature deformation twinning.

摘要

研究了高温变形孪晶对Fe-38Mn合金热剪切压缩变形过程中加工硬化行为的影响。微剪切带和变形孪晶的发现对于连续加工硬化具有重要意义，这是朝着全面理解变形孪晶对加工硬化行为的影响迈出的重要一步。变形孪晶被广泛认为在冷变形甚至严重塑性变形下可协调塑性应变。目前，Fe-38Mn合金热剪切压缩变形的等效应力与应变曲线呈现出连续加工硬化的特征。此外，考虑高温变形孪晶时，连续加工硬化可分为五个阶段。