电工技术学报2018，Vol.33Issue(14)：3170-3176,7.DOI:10.19595/j.cnki.1000-6753.tces.170809
塑性变形和疲劳对304不锈钢电磁属性的影响研究及微观结构分析
Investigation of Electromagnetic Properties of 304 Austenitic Stainless Steel with Plastic Deformation and Fatigue Damage and Microstructure Analysis
摘要
Abstract
Plastic deformation and fatigue damage,as the typical micro-damage caused by external loads such as earthquake and long-term process of liquid flow/stress,may seriously affect the material electromagnetic properties and shorten the structural lifespan.In this study,first,the test pieces suffering from plastic deformation and fatigue damage are fabricated using MTS testing machine,respectively.Second,the correlation between the electromagnetic properties of the material and the plastic deformation/fatigue damage is investigated for 304 austenitic stainless steel.Finally,the mechanism is discussed based on microstructure analysis.With the increase of plastic deformation,the conductivity of the material decreases due to micro-defects.While,with the increase of plasticdeformation,the magnetic polarization of the material increases due to phase transformation of nonmagnetic austenitic phase to magnetic martensitic phase.Similar as the reason of plastic deformation,the fatigue damage also decreases the conductivity of the material and increases the magnetic polarization of the material.关键词
304奥氏体不锈钢/塑性变形/疲劳损伤/电导率/磁导率/微观结构Key words
304 austenitic stainless steel/plastic deformation/fatigue damage/conductivity/magnetic permeability/microstructure分类
信息技术与安全科学引用本文复制引用
解社娟,吴磊,仝宗飞,杨庆宁,陈振茂,朱光艺,李鹏..塑性变形和疲劳对304不锈钢电磁属性的影响研究及微观结构分析[J].电工技术学报,2018,33(14):3170-3176,7.基金项目
This work is supported by National Key R&D Program of China (2017YFF0209703),and the Natural Science Foundation of China (51407132,51577139). （2017YFF0209703）
