Ti-60合金时效处理时初生α相的长大  

GROWTH OF PRIMARY α PHASES IN Ti60 ALLOY AFTER HEAT TREATMENT

作　　者：李阁平[1,2] 李东[1,2] 刘羽寅[1,2] 王青江 关少轩[1,2] 李庆春 

机构地区：[1]中国科学院金属研究所 [2]哈尔滨工业大学

出　　处：《航空材料学报》1997年第4期21-24,共4页Journal of Aeronautical Materials

基　　金：国家自然科学基金资助

摘　　要：对Ｔｉ－５．６Ａｌ－４．８Ｓｎ－２Ｚｒ－１Ｍｏ－０．３２Ｓｉ－１Ｎｄ（ｗｔ％）高温钛合金（简称Ｔｉ－６０）１０１０℃／２ｈ－ＷＱ，７６０℃／２ｈ－ＡＣ热处理样品的分析表明，时效处理时，初生α相的晶界向β转变组织内部移动，形成弓出型晶界。淬火状态的相界以一列颗粒形式的残留物显示出来，残留物为富Ｓｉ－Ｚｒ析出物。同时还观察到被残留物阻碍的位错。The Ti5.6Al4.8Sn2Zr1Mo0.32Si1Nd(Ti60)high temperature titanium alloy heat treated at 1010℃/2hWQ and 760℃/2hAC has been studied. The results of low temperature aging show that the phase boundaries between primary α phase and β transformed phase move into the interior of β transformed phase,and result in bowshaped phase boundaries. A row of Si and Zr rich particles remains along the phase boundaries in water quenched condition, and some dislocations pinned at the particles are also observed.

关 键 词：高温合金 钛合金 初生α相长大 热处理 时效处理 

分 类 号：TG146.23[一般工业技术—材料科学与工程] TG132.32[金属学及工艺—金属材料]