熊毅,陈正阁,厉勇,吕知清,傅万堂

• 1:河南科技大学材料科学与工程学院
• 2:中国人民解放军63883部队
• 3:钢铁研究总院结构材料研究所
• 4:亚稳材料制备技术与科学国家重点实验室

摘要(Abstract)：

在Gleeble-3500热模拟试验机上对原始组织为层片状珠光体的高碳钢进行温度为640~700℃、应变速率0.01~10s-1,最大真应变为1的温压缩变形,采用扫描电镜研究了该过程中渗碳体片层的组织演变情况,并用DEFORM-3D软件模拟了温变形过程中试样内部等效应变的分布情况。结果表明,温压缩变形过程中存在着形变不均匀性,使得试样心部和边缘组织形态有明显差异,随着应变速率的降低,边缘层片状珠光体组织球化为粒状珠光体;在变形过程中珠光体组织主要发生渗碳体片层的球化,随着应变量、应变速率以及变形温度的增加,渗碳体球化率明显增大。

关键词(KeyWords)： 高碳钢;温压缩变形;等效应变;渗碳体;球化

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(钢铁联合研究基金)资助(50471102)

作者(Author): 熊毅,陈正阁,厉勇,吕知清,傅万堂

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