摘要
使用透射电子显微镜,较详细地研究了Ti-34Al-0.5Sb(wt%)合金经过2~3%室温压缩塑性变形以后的变形亚结构。试验结果表明,TiAl+Sb合金室温变形时,在r相板条内形成大量变形孪晶。相邻板条呈某种位向关系下,可以以相界面作镜面,在其两侧的两片r相板条内形成呈一一对应关系的变形孪晶。而在一些取向的r相板条内只产生位错。
The deformed substructure of Ti-34A1-0.5Sb(wt%) alloy pressed for 2~3% at room-temperature was investigated in details using TEM.The test result showed that a number of deformed twins formed within r-phase laths when the alloy suffered from deformation at atmosphere temperature.Both neighbouring r phase laths there were most deformed twins which show corresponding relation each other on the two laths boundary when these have some direction.However,Other r-phase laths only contained some dislocations.
出处
《航空材料学报》
CAS
CSCD
1996年第4期1-6,共6页
Journal of Aeronautical Materials
基金
国家"863"高技术计划基金
国家自然科学基金
关键词
室温变形
孪晶
钛合金
变形
NiAl-based alloy
Deformation at atmosphere temperature
Twin