通过观察高锰钢高温淬火和Si-Ca变质组织,指出高锰钢中的碳化物在高温淬火和变质处理过程中均能形成,并在一定条件下以团球状弥散分布于奥氏体晶粒内.此外,利用高温金相观察了高锰钢组织在加热或高温保温过程中的变化.发现碳化物溶入奥氏体的过程伴随着晶粒的长大.晶粒长大的方式是晶界迁移和大晶粒吞并小晶粒.表面组织层磨发现,表层碳化物溶解后,将留下小的孔洞.上述结果对开发不经热处理高锰钢及高锰钢热处理工艺的确定具有重要的参考价值.
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