郭瑞华,刘方升,王林敏,付月英,方琪

• 1:内蒙古科技大学材料与冶金学院
• 2:内蒙古鄂尔多斯市煤炭局
• 3:包钢钢联股份有限公司包钢线材厂

摘要(Abstract)：

利用Gleeble-1500D型热模拟试验机对3种不同稀土Ce含量(0、0.012%和0.020%,mass fraction,%)的4145H钢进行单道次和双道次压缩实验,研究稀土对4145H钢再结晶行为影响。结果表明:单道次压缩,变形温度1050℃,变形速率为0.1s-1时3种实验钢发生动态再结晶型软化。双道次压缩实验,得出稀土含量为0、0.012%和0.020%的4145H钢奥氏体再结晶区分别在1050、1050和980℃以上;部分再结晶区分别在980℃到1050℃、900℃到1050℃及900℃到980℃之间;未再结晶区分别在980、900及900℃以下;加入稀土,提高变形温度、变形速率,增加间隙时间、变形量及减小初始奥氏体晶粒尺寸均提高了4145H钢静态再结晶体积分数;同时建立了3种实验钢的静态再结晶模型。

关键词(KeyWords)： 4145H钢;稀土Ce;再结晶;静态再结晶模型

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51201086);; 内蒙古科技大学创新基金(2011NCL046)

作者(Author): 郭瑞华,刘方升,王林敏,付月英,方琪

DOI: 10.13289/j.issn.1009-6264.2015.08.024

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