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  4. Microstructure and Mechanical Properties of a Multiphase FeCrCuMnNi High-Entropy Alloy
 
research article

Microstructure and Mechanical Properties of a Multiphase FeCrCuMnNi High-Entropy Alloy

Shabani, Ali
•
Toroghinejad, Mohammad Reza
•
Shafyei, Ali
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April 1, 2019
Journal Of Materials Engineering And Performance

A FeCrCuMnNi high-entropy alloy was produced using vacuum induction melting, starting from high-purity raw materials. The microstructure and mechanical properties of the as-cast FeCrCuMnNi alloy were studied, considering x-ray diffraction (XRD), scanning electron microscopy, and hardness and tensile tests. XRD results revealed the existence of two FCC phases and one BCC phase. Microstructural evaluation illustrated that the as-cast alloy has a typical cast dendritic structure, where dendrite regions (BCC) were enriched in Cr and Fe. Interdendritic regions were saturated with Cu and Ni and revealed G/B(T) {110}< 111 > and Brass {110}< 112 > as the major texture components. The produced alloy revealed an excellent compromise in mechanical properties due to the mixture of solid solution phases with different structures: 300HV hardness, 950MPa ultimate tensile strength and 14% elongation. Microhardness test results also revealed that the BCC phase was the hardest phase. The fracture surface evidenced a typical ductile failure. Furthermore, heat treatment results revealed that phase composition remained stable after annealing up to 650 degrees C. Phase transformation occurred at higher temperatures in order to form more stable phases; therefore, FCC2 phase grew at the expense of the BCC phase.

  • Details
  • Metrics
Type
research article
DOI
10.1007/s11665-019-04003-4
Web of Science ID

WOS:000467433000053

Author(s)
Shabani, Ali
Toroghinejad, Mohammad Reza
Shafyei, Ali
Loge, Roland E.  
Date Issued

2019-04-01

Publisher

SPRINGER

Published in
Journal Of Materials Engineering And Performance
Volume

28

Issue

4

Start page

2388

End page

2398

Subjects

Materials Science, Multidisciplinary

•

Materials Science

•

fecrcumnni high-entropy alloy

•

heat treatment

•

mechanical properties

•

microstructure

•

sem

•

cocrfemnni high-entropy

•

tensile properties

•

annealing treatment

•

texture evolution

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solid-solution

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behavior

•

elements

Note

29th Conference and Exposition on Advanced Aerospace Materials and Processes (AeroMat), Orlando, FL, May 07-10, 2018

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LMTM  
Available on Infoscience
June 18, 2019
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/157220
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