The influence of dilute aluminum and molybdenum on stacking fault and twin formation in FeNiCoCr-based high entropy alloys based on density functional theory

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Jyh-Pin Chou
  • Jie Wei
  • Yu-Chieh Lo

Detail(s)

Original languageEnglish
Article number10940
Journal / PublicationScientific Reports
Volume9
Online published29 Jul 2019
Publication statusPublished - 2019

Link(s)

Abstract

Stacking faults, as defects of disordered crystallographic planes, are one of the most important slipping mechanisms in the commonly seen lattice, face-centered cubic (FCC). Such defects can initiate twinning which strengthens mechanical properties, e.g. twinning-induced plasticity (TWIP), of high entropy alloys (HEAs) at cryogenic temperatures. In this work, by using density functional theory (DFT), the twinning initiated from stacking faults is discussed with regard to two different solute elements, Al and Mo, in the FeNiCoCr HEAs. Our results show that adding aluminum (Al) has noticeable enhancement of twinnability while molybdenum (Mo) only induces more stacking faults in the FeNiCoCr-based HEAs.

Research Area(s)

  • ENERGY

Citation Format(s)

The influence of dilute aluminum and molybdenum on stacking fault and twin formation in FeNiCoCr-based high entropy alloys based on density functional theory. / Yu, Peijun; Zhuang, Yu; Chou, Jyh-Pin; Wei, Jie; Lo, Yu-Chieh; Hu, Alice.

In: Scientific Reports, Vol. 9, 10940, 2019.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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