In-situ neutron diffraction investigation of two-stage martensitic transformation in a 13%Mn steel with serrated deformation

Feng Li, Pengfei Gao, Yan Chen, Cheng Li, Xueliang Shang, Peng Wan, Weijian Chen, Tao Kang, Zhengzhi Zhao, Ke An

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Two stage austenite →ε-martensite →α-martensite phase transformation, phase-specific lattice strain evolution and load sharing during tensile deformation of a 13%Mn hot-rolled austenitic steel are revealed by in-situ neutron diffraction. Direct evidence is provided that serrated deformation behavior is attributed to discontinuous martensitic transformation.

Original languageEnglish
Article number142955
JournalMaterials Science and Engineering: A
Volume840
DOIs
StatePublished - Apr 18 2022

Funding

This work was supported by the New Energy Automobile Material Production and Application Demonstration Platform Project, China (No.TC180A6MR-1) and the Key Research and Development Plan of Shandong Province, China (No.2019TSLH0103). ND was conducted at the Spallation Neutron Source (SNS), which is a DOE Office of Science User Facility operated by ORNL. This work was supported by the New Energy Automobile Material Production and Application Demonstration Platform Project, China (No. TC180A6MR-1 ) and the Key Research and Development Plan of Shandong Province, China (No. 2019TSLH0103 ). ND was conducted at the Spallation Neutron Source (SNS), which is a DOE Office of Science User Facility operated by ORNL. This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ).

Keywords

  • Austenitic steel
  • Discontinuous martensitic transformation
  • Neutron diffraction
  • Stress distribution

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