4.7 Article

Unusual strain-induced martensite and absence of conventional grain refinement in twinning induced plasticity high-entropy alloy processed by high-pressure torsion

Publisher

ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2020.140570

Keywords

Transformation induced plasticity; High-pressure torsion; High-entropy alloys; Sigma phase; Martensitic transformation

Funding

  1. Creative Materials Discovery Program of the National Research Foundation of Korea (NRF) - Ministry of Science and ICT [2016M3D1A102338]
  2. Korea Research Fellowship Program through the National Research Foundation of Korea (NRF) - Ministry of Science and ICT [2019H1D3A1A01102866, 2017H1D3A1A01013666]
  3. National Research Foundation of Korea [2019H1D3A1A01102866] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

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Fe40Mn40Co10Cr10 twinning induced plasticity high-entropy alloy processed by high-pressure torsion shows no typical grain refinement, but retains original grain size with the formation of strain-induced HCP martensitic phase.
A Fe40Mn40Co10Cr10 twinning induced plasticity high-entropy alloy was processed by high-pressure torsion, and its microstructure and mechanical properties were studied. The results indicate the absence of typical grain refinement, but rather the original grain size was retained with the formation of strain-induced HCP martensitic phase.

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