Crystal-plasticity analysis of ridging in ferritic stainless steel sheets

Olaf Engler, Moo Young Huh, Carlos N. Tomé

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

The occurrence of ridging in ferritic stainless steel (FSS) sheets is caused by the collective deformation of bandlike clusters of grains with a similar crystallographic orientation. In this article, large-scale (1.8 × 3.6 mm) orientation maps obtained by electron backscattered diffraction (EBSD) are input into a viscoplastic self-consistent polycrystal plasticity model to analyze the strain anisotropy caused by the topographic arrangement of the recrystallization-texture orientations. Two versions of the ridging model were devised: (1) the local dispersion in strain-rate components is analyzed for the full EBSD map, and (2) narrow bands in the EBSD maps aligned parallel to the ridges on the sheet surface are considered, and the variation in macroscopic strain response from band to band is derived. The effects caused by spatial variations in through-thickness strains and in out-of-plane shears are compared and related to ridging. The model is applied to two sheets distinguished by different levels of ridging.

Original languageEnglish
Pages (from-to)3127-3139
Number of pages13
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume36
Issue number11
DOIs
Publication statusPublished - 2005 Nov

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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