摘要
用光镜、透射电镜对8种 Fe—C,Fe-Cr-C 及 Fe-Ni-C 合金中的片状马氏体进行了一般观察、原位观察及动态观察.结果发现,在这些合金中片状马氏体不但呈大角度分布,而且也能平行分布.片状马氏体的平行生长主要表现为两种形态.一种是并生一对片状马氏体紧靠在一起同时形核,同时长大;另一种是附生几个片状马氏体连续形核、连续长大.本文认为,片状马氏体平行生长的原因,在于马氏体转变的塑性协调作用.
The plate martensites in eight Fe-C,Fe-Cr-C and Fe-Ni-C alloys have been studied using gener- al,in situ and dynamic observations by optical microscope and transmission electron microscope.The results show that the plate martensites not only assumed great angle distribution,but also assumed parallel distribution inthese alloys.The parallel growth of plate martensite possessed two kinds of mode.The one geminating a pair of plate martensites nucleated and grew together simultaneously,the other overgrowth several plate martensites nucleated and grew continuously.It is the view of the authors that the cause of the parallel growth of plate martensites lay in the action of plastic coordination during martensite transformation.
出处
《大连铁道学院学报》
1991年第2期26-30,共5页
Journal of Dalian Railway Institute
基金
国家自然科学基金
关键词
片状马氏体
并生
塑性
协调
plate martensite
geminating
overgrowth
plastic
coordination
