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王静宜 , 谈育煦 , 马增海
金属学报
本文系统地观察了奥氏体不锈钢在恒应变疲劳过程中组织结构的变化规律。与纯铜单晶体相比,不锈钢的循环应力应变曲线没有水平阶段,这与其具有较低的层错能有关。在不同疲劳应变幅下进行疲劳试验时,奥氏体内的位错亚结构相应发生变化,组织结构的演变过程与循环应力应变曲线的变化规律相呼应。
关键词: 奥氏体不锈钢 , strain fatigue , substructure
WANG Jingyi Xi'an Institute of Technology , Xi'an , ChinaTAN Yuxu MA Zenghai Xi'an Jiaotong University , Xi'an , China Institute of Mealic Materials and Strength , Xi'an Jiaotong University , Xi'an 710049 , China
金属学报(英文版)
The alteration of substructure of an austenitic stainless steel has been investigated during con- stant strain fatigue.No plateau stage on the cyclic stress-strain curve was observed for the stainless steel in contrast with a monocrystalline pure copper specimen.This may relate to its low stacking fault energy.During strain fatigue under various amplitudes the substructure of dislocation in austenite alterates correspondingly.It revealed to associate with the appearance change of the cyclic stress-strain curve.
关键词: austenitic strainless steel , null , null
