Engineering the residual stress state and microstructure of stainless steel with mechanical surface treatments

Research output: Contribution to journalArticle

  • External authors:
  • M. Turski
  • S. Clitheroe
  • A. D. Evans
  • C. Rodopoulos
  • D. J. Hughes

Abstract

Four mechanical surface treatments have been considered for the application to austenitic stainless steel structures. Shot peening (SP), laser shock peening (LSP), ultrasonic impact treatment (UIT) and water jet cavitation peening (WJCP), also known as cavitation shotless peening (CSP), have been applied to 8 mm thick Type 304 austenitic stainless steel coupons. This study considers the merits of each of these mechanical surface treatments in terms of their effect on the surface roughness, microstructure, level of plastic work and through thickness residual stress distribution. Microstructural studies have revealed the formation of martensite close to the treated surface for each process. Residual stress measurements in the samples show compressive stresses to a significantly greater depth for the LSP, UIT and WJCP samples compared to the more conventional SP treated sample. © Springer-Verlag 2010.

Bibliographical metadata

Original languageEnglish
Pages (from-to)549-556
Number of pages7
JournalApplied Physics A: Materials Science and Processing
Volume99
Issue number3
DOIs
Publication statusPublished - Jun 2010

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