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author：

LI, Z.-J. (LI, Z.-J..) [1] | HOU, Y.-X. (HOU, Y.-X..) [2] | CHEN, L. (CHEN, L..) [3] | CHEN, Q.-X. (CHEN, Q.-X..) [4] | CHEN, J.-F. (CHEN, J.-F..) [5] | CHANG, F. (CHANG, F..) [6] | DAI, P.-Q. (DAI, P.-Q..) [7] | TANG, Q.-H. (TANG, Q.-H..) [8]

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Scopus

Abstract：

The　tensile　behavior　of　(Fe50Mn30Co10Cr10)100−xSix　(x=0　(Si0),　2　(Si2))　metastable　HEAs　prepared　by　selective　laser　melting　was　studied　at　cryogenic　temperatures.　The　results　demonstrate　that　the　addition　of　Si　leads　to　lattice　distortion　and　a　decrease　in　stacking　fault　energy,　especially　at　77　K,　which　significantly　promotes　transformation-　induced　plasticity　(TRIP)　in　Si2　HEAs.　The　yield　strength,　tensile　strength,　and　ductility　of　Si2　HEAs　are　505.2　MPa,　1364.1　MPa,　and　19%,　which　are　43%,　53%　and　58%　higher　than　those　of　Si0　alloy,　respectively.　TRIP　is　the　main　deformation　mode,　in　addition　to　dislocation　slip,　and　plays　a　key　role　in　strengthening.　The　reinforced　and　continuously　sustained　TRIP　maintains　a　dynamic　strain　distribution　during　deformation.　Ultrahigh　strain　hardening　greatly　enhances　the　strength　and　ductility.　©　2025　The　Nonferrous　Metals　Society　of　China

Keyword：

cryogenic temperature Fe50Mn30Co10Cr10 HEAs selective laser melting Si addition transformation- induced plasticity (TRIP) effect

Community：

  • [ 1 ] [LI Z.-J.]College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350116, China
  • [ 2 ] [LI Z.-J.]College of Materials Science and Engineering, Fujian University of Technology, Fuzhou, 350118, China
  • [ 3 ] [LI Z.-J.]Fujian Provincial Key Laboratory of New Material Preparation and Forming Technology, Fuzhou, 350118, China
  • [ 4 ] [HOU Y.-X.]Beijing Key Laboratory of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China
  • [ 5 ] [CHEN L.]College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350116, China
  • [ 6 ] [CHEN L.]College of Materials Science and Engineering, Fujian University of Technology, Fuzhou, 350118, China
  • [ 7 ] [CHEN Q.-X.]College of Materials Science and Engineering, Fujian University of Technology, Fuzhou, 350118, China
  • [ 8 ] [CHEN Q.-X.]Fujian Provincial Key Laboratory of New Material Preparation and Forming Technology, Fuzhou, 350118, China
  • [ 9 ] [CHEN J.-F.]College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350116, China
  • [ 10 ] [CHANG F.]College of Materials Science and Engineering, Fujian University of Technology, Fuzhou, 350118, China
  • [ 11 ] [CHANG F.]Fujian Provincial Key Laboratory of New Material Preparation and Forming Technology, Fuzhou, 350118, China
  • [ 12 ] [DAI P.-Q.]College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350116, China
  • [ 13 ] [DAI P.-Q.]College of Materials Science and Engineering, Fujian University of Technology, Fuzhou, 350118, China
  • [ 14 ] [DAI P.-Q.]Fujian Provincial Key Laboratory of New Material Preparation and Forming Technology, Fuzhou, 350118, China
  • [ 15 ] [TANG Q.-H.]School of Mechanical & Electrical Engineering, Putian University, Putian, 351100, China

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Source ：

Transactions of Nonferrous Metals Society of China (English Edition)

ISSN： 1003-6326

Year： 2025

Issue： 3

Volume： 35

Page： 872-887

4 . 7 0 0

JCR@2023

CAS Journal Grade：2

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ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 3

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