Experimental and numerical analysis of residual stress in carbon-stabilized expanded austenite

Yawei Peng, Zhe Liu, Yong Jiang, Bo Wang, Jianming Gong*, Marcel A. J. Somers

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Expanded austenite obtained by gaseous carburizing of stainless steel was investigated with X-ray diffraction to determine composition-depth and residual stress-depth distributions. Avoiding ghost stress effects in the analysis of X-ray diffraction data, the obtained composition- and stress-depth profiles are in excellent quantitative agreement with those obtained with other techniques. The residual stress-depth profile was attempted calculated from the composition-depth profile assuming elastic-plastic accommodation of the lattice expansion. In the model, composition-dependence of Young's modulus, yield stress and work hardening exponent were considered. Excellent quantitative agreement was achieved between the experimental and numerical residual stress-depth profiles.

Original languageEnglish
JournalScripta Materialia
Volume157
Pages (from-to)106-109
ISSN1359-6462
DOIs
Publication statusPublished - 2018

Keywords

  • Expanded austenite
  • Numerical analysis
  • Residual stress
  • Surface treatment
  • X-ray diffraction

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