拉伸形变及热循环对TiNiNb合金相变滞后的影响  

EFFECTS OF DEFORMATION AND THERMAL CYCLE ON THE TRANSFORMATION HYSTERESIS IN TiNiNb ALLOY

作　　者：李国旺[1] 张桂敏[1] 崔润琴[2] 

机构地区：[1]北京科技大学物理系 [2]北京科技大学冶金系

出　　处：《四川师范大学学报（自然科学版）》1996年第5期77-79,共3页Journal of Sichuan Normal University（Natural Science）

摘　　要：用拉伸电阻法和Ｘ－射线衍射实验系统地研究了Ｔｉ４４Ｎｉ４７Ｎｂ９合金相变滞后的变化．实验证实了拉伸形变可使合金相变热滞增大，但此宽热滞只在形变后的第一次热循环中出现，在接下来的热循环中，相变热滞回复到形变前的较小值．The change of the transtformation hysteresis in Ti 44 Ni 47 Nb 9 alloy was systematically studied by tensile tests, measurment of electrical resistance and X ray diffraction. It was confirmed that deformation could widen the alloy's transformation hyteresis. But the wider transformation hyteresis appeared only in the first thermal cycle after deformation. The effect of deformation vanished in the subsequent cycles. These results were due to the change of martensite's elastic grain energy.

关 键 词：拉伸形变 热循环 相变滞后 钛镍合金 

分 类 号：TG146.23[一般工业技术—材料科学与工程]