The influence of temperature on deformation-induced martensitic transformation in 301 stainless steel

Yadunandan B. Das, Alexander N. Forsey, Joe Kelleher, Saurabh Kabra, Michael E. Fitzpatrick, Thomas H. Simm, Salih Gungor, Richard J. Moat

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Deformation-induced martensitic transformations are increasingly being used to create desirable mechanical properties in steels. Here, the kinetics of the deformation-induced martensitic transformation is investigated at 300, 263, 223, 173 and 100 K using in situ neutron diffraction during tensile loading. The results from these experiments show a distinct change in the transformation behaviour between 300 K and the tests conducted at 263 K and below, causing a difference in martensite structure. The difference in transformation kinetics is correlated to the suppression of slip at low temperatures, as evidenced using diffraction peak intensity analysis for different grain families and corroborated using transmission electron microscopy. A direct correlation between the deformation-induced martensite fraction and the work-hardening rate is shown.

Original languageEnglish
Pages (from-to)2114-2125
Number of pages12
JournalMaterials Science and Technology (United Kingdom)
Volume34
Issue number17
Early online date22 Aug 2018
DOIs
Publication statusPublished - 22 Nov 2018

Keywords

  • martensite
  • Neutron diffraction
  • solid-state transformation
  • TRIP steel
  • work hardening

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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