Investigation of Electromagnetic Properties of 304 Austenitic Stainless Steel with Plastic Deformation and Fatigue Damage and Microstructure Analysis
Xie Shejuan1, 2, Wu Lei1, Tong Zongfei1, Yang Qingning1, Chen Zhenmao1, Zhu Guangyi2, Li Peng2
1. State Key Laboratory for Strength and Vibration of Mechanical Structures Shaanxi Engineering Research Center of Nondestructive Testing and Structural Integrity Evaluation Xi'an Jiaotong University Xi'an 710049 China; 2.Xinjiang Uygur Autonomous Region Inspection Institute of Special Equipment Urumqi 830011 China
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 plastic deformation, 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.
作者简介: Xie Shejuan female, born in 1983, Ph.D., Associate Professor, Research interest: Mechanics and Nondestructive Evaluation.E-mail: xiesj2014@mail.xjtu.edu.cn
引用本文:
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.
Xie Shejuan, Wu Lei, Tong Zongfei, Yang Qingning, Chen Zhenmao, Zhu Guangyi, Li Peng. Investigation of Electromagnetic Properties of 304 Austenitic Stainless Steel with Plastic Deformation and Fatigue Damage and Microstructure Analysis. Transactions of China Electrotechnical Society, 2018, 33(14): 3170-3176.
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