摘要
用示差扫描热分析仪（DSC）和恒应力拉伸试验研究了时效和冷加工率对Ti-50．5mol％Ni形状记忆合金相变特性和回复应变的影响。673K时效后，冷却时发生了B2-R-M转变，加热时发生了M-B2转变。773K时效后发生了B2-M转变，未发生R相变。冷加工合金在较低温度热处理后，随加工率增加，回复应变减小；随热处理温度升高，回复应变增加。
The effect of aging and cold working rate on the trans formation properties and the recovery strain in Ti-50. 5mol%Ni shape memory alloy have been investigated with DSC (Differential Scanning Calorimetry) and mechanical test under a constant stress. After aging at 673K, B2-R-M and M-B2 transformation took place during cooling and heating processes,respectively, After aging at 773K,B2-M took place and R-phase transformatiom did not qppear. After heat treatment at low temperature fo cold working alloys, the recovery strain decreases wigh increasing cold working rate. When heat treatment temperature is rising, the recovery strain is increasing
出处
《机械工程材料》
CAS
CSCD
北大核心
1997年第3期16-18,23,共4页
Materials For Mechanical Engineering
基金
陕西省教委重点科研基金
