Influence of impact energy on work hardening ability of austenitic manganese steel and its mechanism

作     者：Li Xiaoyun Wu Wei Zu Fangqiu Liu Lanjun Zhang Xianfeng 

作者机构：Engineering Training Center Hefei University of Technology Hefei 230601 China School of Materials Science and Engineering Hefei University of Technology Hefei 230009 China 

出 版 物：《China Foundry》 (中国铸造（英文版）)

年 卷 期：2012年第9卷第3期

页      面：248-251页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the Special Foundation for Introducing and Selecting Talent in Hefei University of Technology  China (No. 2004000197) 

主　　题：austenitic manganese steel work hardening impact energy microstructure hardening mechanism 

摘      要：To further understand the hardening mechanism of austenitic manganese steel under actual working conditions, the work hardening ability was studied and the microstructures of austenitic manganese steel were observed under different impact energies. The work hardening mechanism was also analyzed. The results show that the best strain hardening effect could be received only when the impact energy reaches or exceeds the critical impact energy. The microstructural observations reveal that dislocations, stacking faults and twins increase with raising impact energy of the tested specimens. The hardening mechanism changes at different hardening degrees. It is mainly dislocation and slip hardening below the critical impact energy, but it changes to the twinning hardening mechanism when the impact energy is above the critical impact energy.