热压缩变形温度NiTi形状记忆合金微观组织演变的影响  

The influence of thermal compression deformation temperature on microstructure evolution of NiTi Shape Memory Alloy

作　　者：成亦飞 CHENG Yi-fei(AECC Beijing Institute of Aeronautical Materials,Beijing 100095,China)

机构地区：[1]中国航发北京航空材料研究院,北京100095

出　　处：《世界有色金属》2020年第15期1-3,共3页World Nonferrous Metals

摘　　要：本文针对Ni60Ti40合金,在Gleeble-3500热压缩模拟试验机上进行单道次不同工艺条件下的热压缩模拟实验(温度:1023-1173K,应变速率:0.005s-1,应变量:0.7),对试验后的试样进行SEM、TEM电镜观察与表征,获得该合金热压缩变形过程温度对其组织演变规律的影响。从而为高强高硬度Ni60Ti40合金热变形工艺优化提供微观组织方面的基础性研究支撑。NiTi shape memory alloy was studied in this text,using Gleeble-3800 thermal compression simulation machine to carry out single-pass thermal compression tests under different thermal deformation temperatures.utilize electron microscope and transmission electron microscope were used to observe and characterize the microstructure of the representation.Obtain the effect of temperature on microstructure of the alloy during thermal compression deformation.It provides theoretical support for NiTi shape memory alloy thermal deformation process optimization and deformation mechanism research.

关 键 词：Ni60Ti40合金 热变形 微观组织 

分 类 号：TG139.6[一般工业技术—材料科学与工程]