Ti-Ni-V形状记忆合金超弹性研究

发布时间：2018-03-10 23:15

  本文选题：Ti-Ni-V合金　切入点：形状记忆合金　出处：《稀有金属材料与工程》2015年07期 　论文类型：期刊论文

【摘要】：采用拉伸和应力-应变循环实验研究了退火温度、时效温度、时效时间、形变温度和应力-应变循环对Ti-50.8Ni-0.5V(原子分数,%)形状记忆合金超弹性(SE)的影响。随退火温度的升高,合金的应力诱发马氏体临界应力(σM)先减小后增大,超弹性残留应变(εR)先增大后减小再增大,为了获得优异的室温SE,退火温度应取500~600℃。随时效温度的升高,合金的σM降低,εR增加,SE变差;随时效时间延长,300℃时效态合金的SE稳定,400和500℃时效态合金的SE变差。随形变温度的升高,σM增加,SE改善。随循环次数增加,400℃退火态合金的SE稳定;500℃退火态合金的σM降低;600℃退火态合金的SE由非线性向线性转变。
[Abstract]:The effects of annealing temperature, aging temperature, aging time, deformation temperature and stress-strain cycle on superelastic SES of Ti-50.8Ni-0.5V (atomic fraction fraction) shape memory alloy were studied by tensile and stress-strain cycles. The stress induced martensite critical stress (蟽 M) first decreases and then increases, and the superelastic residual strain (蔚 R) increases first and then decreases then increases. In order to obtain excellent room temperature SE, the annealing temperature should be 500 ~ 600 鈩，

本文编号：1595501