Exploiting the non-equilibrium phase transformation in a 15Cr-2Ni-2Al-11Mn resource-saving duplex stainless steel

Jianquan Wan, Haihui Ruan, Jianbiao Wang, San-Qiang Shi

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)

Abstract

Specifically, we studied the effects of annealing temperature, time, cooling method and plastic deformation based on the 15Cr-2Ni-2Al-11Mn DSS and established TTT diagrams of as-cast and cold-rolled duplex stainless steels using the Avrami equation, respectively. A simplified model of diffusion-mediated phase transformation was established to explain the stretched exponent 2.5 used in the Avrami equation. And it is found that plastic deformation not only changes the rate of phase transformation and the grain size of new phase but also changes the equilibrium phase constitution.
Original languageEnglish
Pages (from-to)433-440
Number of pages8
JournalMaterials and Design
Volume114
DOIs
Publication statusPublished - 15 Jan 2017

Keywords

  • Duplex stainless steel
  • Microstructure
  • Phase transformation
  • Plastic deformation
  • TTT diagram

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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