Effect of Cu on the Mechanical Properties of High Manganese Steel for Cryogenic Application
The effect of Cu addition on the mechanical properties was investigated in a high manganese steel for cryogenic application.As-rolled and solid solution heated samples were studied by analysis of their microstructures and mechanical properties obtained in uniaxial tensile tests and Charpy impact tests at -196℃.The addition of Cu was found to decrease the strain-hardening rate of steel in both states.However,slight decrease of ultimate tensile strength was only found in steel of solid solution state.For the as-rolled state with increasing Cu composition,the ultimate tensile strength was almost unaffected,while its yield strength increased.The impact absorbed energy at -196℃ was improved by the addition of Cu and reached maximum when copper content is 0.5wt%.The growth of toughness was related to the suppression of martensite transformation resulting from the increasing stacking fault energy(SFE).
Cu high manganese steel cryogenic strength toughness
LIU Huibin ZHANG Hanqian DING Jianhua
Baosteel Research Institute, Shanghai 201900, China
国际会议
成都
英文
49-52
2016-11-16（万方平台首次上网日期，不代表论文的发表时间）