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.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
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)
