王立民,张红,刘宁,刘正东,杨钢,卢伦

• 1:钢铁研究总院结构材料研究所
• 2:中国科学院理化技术研究所
• 3:济南钢铁集团有限公司
• 4:抚顺特殊钢股份有限公司

摘要(Abstract)：

采用Gleeble-3500试验机对0Cr11Ni2MoVNb、1Cr20Co6Ni2Mo1WV和403Nb高合金马氏体耐热钢进行热压缩试验,结果表明,3种钢的热变形表观激活能分别为461.6、508.1l和571.1 kJ/mol。通过同其他研究对比,发现影响钢的表观激活能的因素主要是碳含量和合金元素含量。在普碳钢以及微合金钢中,合金元素含量少,形成的碳化物少,对钢的表观激活能影响不大;对于高合金钢,一方面是由于碳化物,尤其是细小的NbC粒子对位错的钉扎作用,另一方面是由于合金元素的固溶强化作用,使得高合金钢的热变形表观激活能随钢中碳含量和合金元素含量的增加而增加。

关键词(KeyWords)： 马氏体耐热钢;热压缩;表观激活能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金重点资助项目(50634030)

作者(Author): 王立民,张红,刘宁,刘正东,杨钢,卢伦

DOI: 10.13289/j.issn.1009-6264.2012.02.013

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