摘要
利用金相显微镜、扫描电镜等研究了Cu-24Al-3Mn-2Ti(原子分数,%)合金在不同温度下进行母相时效处理后的合金组织形态。结果表明:Cu-Al-X系形状记忆合金中,Mn和Ti的加入细化了组织,并且形成了富Mn和富Ti相;随着时效温度的升高,在不同的特定温度下,Cu-24Al-3Mn-2Ti(原子分数,%)合金中会有少量的共析相析出,且伴随有针状马氏体的出现;在400℃时效后,合金的显微组织呈现最佳自协作状态,马氏体板条细密有序,富Ti和Al相均匀地弥散在组织中,合金中没有或有很少量共析产物出现。
The quenching microstructure of the Cu-24Al-3Mn-2Ti （atomic fi＇action,% ） alloy after parent aging treatment at different temperature was studied by means of OM and SEM observation.The results show that,in Cu-Al-X shape memory alloy, Mn and Ti addition refine the microstructure,and form affluent of Mn or Ti.When aging temperature raises,little eutectoid phases precipite in the alloy at different temperature,and with the emergence of needle martensite appearing. After aging treatment at 400℃ ,the microstructure is the best coorperative status,the martensite lathing is fine and ordered,the precipitation rich of Mn and Ti disperse orderly in the microstructure and little or even no eutectoid phase precipites in the alloy.
出处
《热加工工艺》
CSCD
北大核心
2007年第4期43-45,共3页
Hot Working Technology
基金
河北省自然科学基金资助项目(599270)
关键词
母相时效
沉淀强化
弥散强化
时效温度
共析相
parent phase aging
precipitation hardening
dispersion strengthening
aging temperature
eutectoid phase
