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材料工程  2016, Vol. 44 Issue (3): 40-45    DOI: 10.11868/j.issn.1001-4381.2016.03.007
  材料与工艺 本期目录 | 过刊浏览 | 高级检索 |
奥氏体化合金元素Mn和Ni对FV520B焊缝组织与力学性能的影响
张敏, 刘明志, 张明, 李继红
西安理工大学材料科学与工程学院, 西安 710048
Microstructure and Mechanical Properties of FV520B Affected by Austenitizing Elements Mn and Ni
ZHANG Min, LIU Ming-zhi, ZHANG Ming, LI Ji-hong
College of Material Science and Engineering, Xi'an University of Technology, Xi'an 710048, China
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摘要 采用金相观察及扫描电镜(SEM)等研究了奥氏体化合金元素Mn和Ni对FV520B马氏体不锈钢的焊缝组织及力学性能的影响。结果表明,FV520B不锈钢的焊缝组织以回火马氏体为主,随着合金元素增加,焊缝组织变得更加细小。Mn,Ni元素能够有效提高焊缝中奥氏体的含量。合金元素对焊缝强度的影响较小,但当同时添加Mn,Ni元素时,焊缝抗拉强度和屈服强度得到提高。Mn,Ni元素能够通过提高焊缝奥氏体量改善焊缝的冲击韧度。相对于Mn元素,Ni元素提高焊缝韧性的效果更好。
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张敏
刘明志
张明
李继红
关键词 FV520B马氏体不锈钢奥氏体化合金元素力学性能    
Abstract:Metallographic observation and SEM graphic analysis were applied to the research of the microstructure and mechanical properties of FV520B affected by austenitizing elements Mn and Ni. The results show that the microstructure of FV520B stainless steel is mainly tempered martensite. With the increase of the alloy elements,the microstructure becomes finer. Mn and Ni can effectively improve the content of austenite in the weld. The effect of alloying elements on the weld strength is small,but the tensile strength and yield strength of the welded joint can be improved when the Mn and Ni elements are added. Mn and Ni elements can improve the impact toughness of the weld by increasing the volume of the austenite. Relative to the Mn element,the Ni element improves the weld toughness better.
Key wordsFV520B martensite stainless steel    austenitizing    alloying element    mechanical property
收稿日期: 2014-07-02      出版日期: 2016-03-22
中图分类号:  TG422.3  
通讯作者: 张敏(1967-),男,博士,教授,博士生导师,主要从事焊接成形过程的力学行为及其结构质量的控制、焊接凝固过程的组织演变行为及先进焊接材料研究     E-mail: zhmmn@xaut.edu.cn
引用本文:   
张敏, 刘明志, 张明, 李继红. 奥氏体化合金元素Mn和Ni对FV520B焊缝组织与力学性能的影响[J]. 材料工程, 2016, 44(3): 40-45.
ZHANG Min, LIU Ming-zhi, ZHANG Ming, LI Ji-hong. Microstructure and Mechanical Properties of FV520B Affected by Austenitizing Elements Mn and Ni. Journal of Materials Engineering, 2016, 44(3): 40-45.
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http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.03.007      或      http://jme.biam.ac.cn/CN/Y2016/V44/I3/40
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