摘要
用高温Ｘ射线衍时（ＸＲＤ）方法研究纯Ｃｏ相变的动态行为．结果表明：４２５℃以上它以ｆｃｃ（β─Ｃｏ）形式存在，在无应变条件下大部分β─Ｃｏ可以保持至室温，常温下研磨，则β─Ｃｏ将转变成ｈｃｐ结构的α─Ｃｏ，说明在β─Ｃｏ向α─Ｃｏ相变的过程中，应力是重要的诱发因素．
Phase transformation of Co has been studied by using high temperature X-ray diffraction.At a temperature above 425℃ the hcp structure of Co transformed to an fcc phase. The most finding is that the transformation below 425℃ is very difficult to induce by simple cooling. If fcc-Co deformed by grinding,it is easy to transform into hcp phase at room temperature.So, at the process of transformation from fec into hcp, deformation is very important.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1994年第1期B045-B048,共4页
Acta Metallurgica Sinica
基金
天津市青年基金
关键词
相变
X射线衍射
钴
Co
phase transformation
X-Ray diffraction
