摘要
用区域熔炼高纯Ｔｉ经应变退火获得单晶．定向切割出的［０００１］位向单晶试样在ＳＥＭ上观察循环变形时表面形貌变化，结果表明，循环应变几乎全部是｛１０１２｝，｛１１２２｝和｛１１２４｝孪晶组成的循环孪晶带的贡献，疲劳裂纹在孪晶带中部沿｛１０１２｝孪晶和｛１１２２｝孪晶交界萌生。
Monocrystals were grown from the zone-melting refined titanium. A specimen with the loading axis parallel to [0001] direction was cyclically deformed within the chamber of a scanning electron microscope. The results indicated that the cyclic strain was accommodated almost entirely by twin bands consisted of {1012}, {1122} and{1124}twins. Fatigue cracks were found to initiate along the midrib of twin bands.
出处
《材料研究学报》
EI
CAS
CSCD
1995年第2期103-106,共4页
Chinese Journal of Materials Research
基金
国家自然科学基金
关键词
钛单晶
循环变形
孪晶带
itanium, monocrystal, cyclic deformation. twin bands
