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.
| Translated title of the contribution | Investigation of Electromagnetic Properties of 304 Austenitic Stainless Steel with Plastic Deformation and Fatigue Damage and Microstructure Analysis |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 3170-3176 |
| Number of pages | 7 |
| Journal | Diangong Jishu Xuebao/Transactions of China Electrotechnical Society |
| Volume | 33 |
| Issue number | 14 |
| DOIs | |
| State | Published - 25 Jul 2018 |