Open Access System for Information Sharing

Login Library

 

Article
Cited 0 time in webofscience Cited 0 time in scopus
Metadata Downloads

Novel Co-rich high entropy alloys with superior tensile properties

Title
Novel Co-rich high entropy alloys with superior tensile properties
Authors
LEE, BYEONG JOOCHOI, WON MIKIM, HYOUNG SEOP
Date Issued
Feb-2019
Publisher
TAYLOR & FRANCIS
Abstract
We developed a series of Co-rich CoxCr25(FeNi)75−x (x = 35, 45, 55, 65) high entropy alloys with improved strength and/or ductility, derived from lowering the stacking fault energy (SFE) and reducing the fcc phase stability of the equiatomic CoCrFeNi alloy. Thermodynamics and ab initio calculations demonstrated that increasing Co while decreasing Fe and Ni concentrations lower the SFE and reduce the fcc phase stability. The Co35Cr25Fe20Ni20 and Co45Cr25Fe15Ni15 alloys with single fcc phase, exhibit superior tensile properties, contributing to the twinning and fcc → hcp martensitic transformation. The present study offers a guideline for designing high-performance high entropy alloys. A series of novel Co-rich non-equiatomic high entropy alloys with enhanced tensile properties were developed by lowering the stacking fault energy and reducing the phase stability of equiatomic CoCrFeNi alloy.
URI
http://oasis.postech.ac.kr/handle/2014.oak/95290
ISSN
2166-3831
Article Type
Article
Citation
Materials Research Letters, vol. 7, no. 2, page. 82 - 88, 2019-02
Files in This Item:
There are no files associated with this item.

qr_code

  • mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Related Researcher

Researcher

 LEE, BYEONG JOO
Dept of Materials Science & Enginrg
Read more

Views & Downloads

Browse