朱洪武,刘雅政,闫永明,徐盛,王磊英,王国存

• 1:北京科技大学材料科学与工程学院
• 2:西宁特殊钢股份有限公司

摘要(Abstract)：

用Gleeble-1500热模拟试验机研究钎具用钢22Si2MnCrNi2MoA连续冷却相变组织变化规律,包括静态和动态连续冷却相变规律等,分析了合金元素作用、冷却速度和热变形对CCT曲线、相变组织及性能的影响。结果表明:Mn、Cr、Mo、Ni等元素的加入是为了使22Si2MnCrNi2MoA钢可以在较宽的冷却速度范围内得到马氏体+贝氏体为主的复相组织;随着冷却速度的增加,变形促进多边形铁素体形成的能力将得到削弱,而变形促进贝氏体形成的能力将得到加强,且贝氏体的形态发生了变化。热变形促进了铁素体和贝氏体相变,细化了贝氏体板条,变形促使马氏体相变转变开始温度略微降低。

关键词(KeyWords)： 钎具用钢;22Si2MnCrNi2MoA;相变;CCT曲线;连续冷却

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 朱洪武,刘雅政,闫永明,徐盛,王磊英,王国存

DOI: 10.13289/j.issn.1009-6264.2013.01.018

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