Effect of Phase Transformation on Damage-induced Magnetization of 304 Austenitic Stainless Steel

Hongmei Li, Dongli Zhang, Wenlu Cai, Yong Li, Zhenmao Chen, Tetsuya Uchimoto, Toshiyuki Takagi, Kensuke Yoshihara

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Effect of phase transformation on damage-induced magnetization of 304 austenitic stainless steel is experimentally studied in this paper. Firstly, relationship between plastic deformation and the deformation-induced phase transformation of 304 austenitic steel is investigated. Then, compositions and distributions of phases in the 304 austenitic steel specimens are observed by an X-ray diffractometer and a magnetic force microscopy, respectively. Finally, relationship between the damage-induced magnetization and the deformation-induced ferromagnetic phase for the 304 austenitic steel is summarized. It is found that 1) the ferromagnetic α'-martensite phase increases systematically with the plastic deformation and distributes mainly at the in-grain slip lines. 2) the intensity of damage-induced magnetization depends linearly on the amount of ferromagnetic phase for 304 austenitic steel. It is also clarified that the reason why the damage-induced magnetization increases with plastic strain in the 304 steel is due to the increasing amount of ferromagnetic phase caused by plastic deformation.

Original languageEnglish
Title of host publicationElectromagnetic Nondestructive Evaluation (XIX)
EditorsTetsuya Uchimoto, Hiroaki Kikuchi, Noritaka Yusa
PublisherIOS Press
Pages187-194
Number of pages8
ISBN (Electronic)9781614996385
DOIs
Publication statusPublished - 2016

Publication series

NameStudies in Applied Electromagnetics and Mechanics
Volume41
ISSN (Print)1383-7281
ISSN (Electronic)1879-8322

Keywords

  • 304 austenitic steel
  • Damage-induced magnetization
  • phase transformation

ASJC Scopus subject areas

  • Mechanical Engineering
  • Electrical and Electronic Engineering

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