本文選題：Ti-Ni-V合金　切入點：形狀記憶合金　出處：《稀有金屬材料與工程》2015年07期 　論文類型：期刊論文

【摘要】：采用拉伸和應(yīng)力-應(yīng)變循環(huán)實驗研究了退火溫度、時效溫度、時效時間、形變溫度和應(yīng)力-應(yīng)變循環(huán)對Ti-50.8Ni-0.5V(原子分數(shù),%)形狀記憶合金超彈性(SE)的影響。隨退火溫度的升高,合金的應(yīng)力誘發(fā)馬氏體臨界應(yīng)力(σM)先減小后增大,超彈性殘留應(yīng)變(εR)先增大后減小再增大,為了獲得優(yōu)異的室溫SE,退火溫度應(yīng)取500~600℃。隨時效溫度的升高,合金的σM降低,εR增加,SE變差;隨時效時間延長,300℃時效態(tài)合金的SE穩(wěn)定,400和500℃時效態(tài)合金的SE變差。隨形變溫度的升高,σM增加,SE改善。隨循環(huán)次數(shù)增加,400℃退火態(tài)合金的SE穩(wěn)定;500℃退火態(tài)合金的σM降低;600℃退火態(tài)合金的SE由非線性向線性轉(zhuǎn)變。
[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，

本文編號：1595501