电脉冲处理对预变形Fe13Mn6Si13Cr4Ni0.1C合金形状记忆效应及显微组织的影响（英文）  

Effects of Electric Pulse Treatment on Shape Memory Effect and Microstructure in a Pre-deformation Fe13Mn6Si13Cr4Ni0.1C Alloy

作　　者：杨世洲[1,2] 李宁[1] 李辉[2] 

机构地区：[1]四川大学,四川成都610065 [2]四川建筑职业技术学院博士后创新实践基地,四川德阳618000

出　　处：《稀有金属材料与工程》2016年第1期51-55,共5页Rare Metal Materials and Engineering

基　　金：National Natural Science Foundation of China(50871072,50501015)

摘　　要：研究了电脉冲处理对预变形Fe13Mn6Si13Cr4Ni0.1C合金形状记忆效应及其显微组织的影响。结果表明:电脉冲处理能加速Cr和C原子的迁移及Cr_(23)C_6碳化物的析出,降低时效温度,缩短时效时间,并能诱发Cr_(23)C_6碳化物的形核。因此,与10%拉伸预变形后再经973,1073 K时效的合金相比,10%拉伸预变形后经300 V,1100μF,1 Hz电脉冲处理的Fe13Mn6Si13Cr4Ni0.1C合金,其形状回复率能在300 s时间内从固溶态合金的32%提高到87.2%。Effects of electric pulse treatment on shape memory effect and microstructure of a pre-deformed Fe13Mn6Si13Cr4Ni0.1C alloy were investigated. The results indicate that electric pulse treatment can accelerate the migration of Cr and C atoms and the precipitation of Cr23C6 carbides, lower ageing temperature, shorten ageing time and induce the nucleation of Cr23C6 carbides. Therefore, the shape recovery ratio can be increased to 87.2% from 32% of a water-quenched alloy within 300 s for the Fe13Mn6Si13Cr4Ni0.1C alloy by 300 V, 1100 μF, 1 Hz electric pulse treatment after 10% tensile pre-deformation compared to alloys aged at 973 and 1073 K followed by the same pre-deformation.

关 键 词：形状记忆效应 预变形 电脉冲处理 时效 Cr23C6碳化物 形核率 

分 类 号：TG139[一般工业技术—材料科学与工程]