Co相变的X射线衍射研究  

XRD STUDIES ON A PHASE TRANSFORMATION OF Co

作　　者：郝建民[1] 王利杰[1] 刘寿荣[1] 梁福起[1] 

机构地区：[1]机电部第四十六研究所,天津硬质合金研究所

出　　处：《金属学报》1994年第1期B045-B048,共4页Acta Metallurgica Sinica

基　　金：天津市青年基金

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.

关 键 词：相变 X射线衍射 钴 

分 类 号：TG146.16[一般工业技术—材料科学与工程]