加热速率对CuAlBe形状记忆合金相变的影响  

Influence of Heating Rate on Transformations in CuAIBe Shape Memory Alloy

作　　者：刘占超[1] 王冀恒[1] 胡建[1] 谢春生[1] 

机构地区：[1]江苏科技大学先进焊接技术省级重点实验室,江苏镇江212003

出　　处：《全面腐蚀控制》2009年第2期17-19,共3页Total Corrosion Control

基　　金：江苏科技大学材料与工程学院青年基金资助项目

摘　　要：通过差示扫描量热技术研究了不同的加热速率对CuAlBe形状记忆合金的相变特征的影响。结果表明：在不同加热速率下的相变点在一个区域内变化（Ms=120-128℃，Mf=99-105℃，As=142-130℃，Af=151-141℃）。快速加热使两个相变峰靠近，随着加热速率的降低，两个相变峰逐渐分离。用超低降温速率法分离后的DSC曲线，右瑞的大峰变为了一连串由许多微区依次发生马氏体逆相变所产生的许多小的放热峰。The experiment by differential scanning calorimetry and thermal cycling were considering the different heating rates on Cu- Al-Be memory alloy phase change characteristics. The results showed ： at different heating rates of the phase transformation in a region change （Ms= 120-128 ℃, Mf =99- 105 ℃, As= 142-130℃, Af= 151-141 ℃）. Rapid heat two peaks near the phase transition, with the heating rate, the reduction of two-phase change gradually separated. To ultra-low cooling rate after separation of DSC curve, subguadratic the peak into a series of many micro-occurred followed by the reverse martensitic transformation of many small exothermic peak.

关 键 词：CUALBE合金 加热速率 形状记忆合金 相变 

分 类 号：TG139.6[一般工业技术—材料科学与工程]