余万华,石素锦,刘玉坤,黄宗泽,王蕾,余伟

• 1:北京科技大学材料科学与工程学院
• 2:宝钢股份中央研究院长材研究所

摘要(Abstract)：

在Gleeble-3500热模拟试验机上对GCr15钢试样进行了双道次热压缩,模拟其在预精轧与精轧阶段在不同温度下的组织演变过程。同时设计了特殊GCr15钢试样,可在Gleeble-3500上双道次压缩试验后,再加工成拉伸样,得到相应压缩条件下试样的拉伸性能。采用光学显微镜、扫描电镜(SEM)和拉伸试验机等观察测试了不同压缩温度条件下GCr15钢试样的组织形貌及拉伸性能。结果表明:当精轧温度为800～850℃时,GCr15钢试样可获得珠光体团直径较小、渗碳体片层较细、网状碳化物较少的组织;拉伸试验表明,精轧温度为800℃时,GCr15钢试样的抗拉强度达到最大,温度低于800℃和高于800℃时,抗拉强度逐渐降低。

关键词(KeyWords)： 双道次压缩;变形温度;网状碳化物;珠光体

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 余万华,石素锦,刘玉坤,黄宗泽,王蕾,余伟

DOI: 10.13289/j.issn.1009-6264.2019-0326

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