摘要
通过差热扫描分析、X射线衍射等方法研究了Cu的添加对Ti36Ni49-xHf15Cux(x=1,3,5,8)合金马氏体相变行为的影响。研究表明:Cu的加入略微降低合金的相变温度(约15℃),但其Ms仍高于150℃,可作为高温形状记忆合金使用。随着Cu含量的升高,合金的B19′马氏体晶格常数a、b和c不发生明显变化,但单斜角β逐渐降低。Ti36Ni49-xHf15Cux(x=1,3,5,8)合金的相组成为B19′单斜马氏体和(Ti,Hf,Cu)2Ni相。马氏体的亚结构为(001)复合孪晶。
The paper researches the effect of Cu addition on Ti36 Ni49- x Hf15 Cux (x = 1,3,5,8) alloy martensite phase change by means of differential heat scan analysis, X ray diffraction. It shows Cu addition decreases phase change temperature ( about 15 12 ) slightly, the temperature of Ms is above 150 12, so the alloy can be used as memory alloy. With the increasing of Cu content, B19' martensite crystal lattice constants of the alloy,a, b and c keeps little change, but the monoclinic angle gradually drops. The phase of alloy Ti36 Ni49 x Hf15 Cux(x = 1,3, 5,8) forms B19 monoclinic martensite and (Ti, Hf, Cu) 2 Ni phase. The sub - structure of the martensite is (001) composite twins crystal.
出处
《交通科技与经济》
2007年第4期44-46,共3页
Technology & Economy in Areas of Communications
基金
黑龙江省教育厅科学技术研究项目(11511308)