Synergistic effect of Ti and Al on L12-phase design in CoCrFeNi-based high entropy alloys

Da Chen; Feng He; Bin Han; Qingfeng Wu; Yang Tong; Yilu Zhao; Zhijun Wang; Jincheng Wang; Ji-jung Kai

doi:10.1016/j.intermet.2019.106476

Synergistic effect of Ti and Al on L1₂-phase design in CoCrFeNi-based high entropy alloys

Da Chen (Co-first Author)
, Feng He (Co-first Author)
, Bin Han
, Qingfeng Wu
, Yang Tong
, Yilu Zhao
, Zhijun Wang^*
, Jincheng Wang^*
, Ji-jung Kai^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

124 Citations (Scopus)

Abstract

L1₂-phase-strengthened high entropy alloys (HEAs) have shown promising mechanical properties for both high-temperature and cryogenic applications. However, designing L1₂ phase still strongly relies on the trial-and-error experiments. The current study reported that the L1₂ phase in face centered cubic (FCC) HEAs is greatly influenced by a sygnergistic effect of Ti and Al. The experimental results showed that a Ti/Al ratio ranging from 0.7 to 2 was required by L1₂ phase in CoCrFeNi-based HEAs. The present findings provided an efficient guideline for designing L1₂ phase in the complex concentrated alloys.

Original language	English
Article number	106476
Number of pages	5
Journal	Intermetallics
Volume	110
Online published	2 May 2019
DOIs	https://doi.org/10.1016/j.intermet.2019.106476
Publication status	Published - Jul 2019

Research Keywords

High entropy alloys
Microstructure characterization
Ti/Al ratio
FCC matrix
L12 phase
Alloy design

Access Output

10.1016/j.intermet.2019.106476

Other Access Options

Check CityUHK Library

Permanent Link

Right click to copy link

Cite this

@article{cea191aa27eb46f5bcee99e126e9e97b,

title = "Synergistic effect of Ti and Al on L12-phase design in CoCrFeNi-based high entropy alloys",

abstract = "L12-phase-strengthened high entropy alloys (HEAs) have shown promising mechanical properties for both high-temperature and cryogenic applications. However, designing L12 phase still strongly relies on the trial-and-error experiments. The current study reported that the L12 phase in face centered cubic (FCC) HEAs is greatly influenced by a sygnergistic effect of Ti and Al. The experimental results showed that a Ti/Al ratio ranging from 0.7 to 2 was required by L12 phase in CoCrFeNi-based HEAs. The present findings provided an efficient guideline for designing L12 phase in the complex concentrated alloys.",

keywords = "High entropy alloys, Microstructure characterization, Ti/Al ratio, FCC matrix, L12 phase, Alloy design",

author = "Da Chen and Feng He and Bin Han and Qingfeng Wu and Yang Tong and Yilu Zhao and Zhijun Wang and Jincheng Wang and Ji-jung Kai",

year = "2019",

month = jul,

doi = "10.1016/j.intermet.2019.106476",

language = "English",

volume = "110",

journal = "Intermetallics",

issn = "0966-9795",

publisher = "Elsevier Ltd.",

}

TY - JOUR

T1 - Synergistic effect of Ti and Al on L12-phase design in CoCrFeNi-based high entropy alloys

AU - Chen, Da

AU - He, Feng

AU - Han, Bin

AU - Wu, Qingfeng

AU - Tong, Yang

AU - Zhao, Yilu

AU - Wang, Zhijun

AU - Wang, Jincheng

AU - Kai, Ji-jung

PY - 2019/7

Y1 - 2019/7

N2 - L12-phase-strengthened high entropy alloys (HEAs) have shown promising mechanical properties for both high-temperature and cryogenic applications. However, designing L12 phase still strongly relies on the trial-and-error experiments. The current study reported that the L12 phase in face centered cubic (FCC) HEAs is greatly influenced by a sygnergistic effect of Ti and Al. The experimental results showed that a Ti/Al ratio ranging from 0.7 to 2 was required by L12 phase in CoCrFeNi-based HEAs. The present findings provided an efficient guideline for designing L12 phase in the complex concentrated alloys.

AB - L12-phase-strengthened high entropy alloys (HEAs) have shown promising mechanical properties for both high-temperature and cryogenic applications. However, designing L12 phase still strongly relies on the trial-and-error experiments. The current study reported that the L12 phase in face centered cubic (FCC) HEAs is greatly influenced by a sygnergistic effect of Ti and Al. The experimental results showed that a Ti/Al ratio ranging from 0.7 to 2 was required by L12 phase in CoCrFeNi-based HEAs. The present findings provided an efficient guideline for designing L12 phase in the complex concentrated alloys.

KW - High entropy alloys

KW - Microstructure characterization

KW - Ti/Al ratio

KW - FCC matrix

KW - L12 phase

KW - Alloy design

UR - https://www.scopus.com/pages/publications/85064916881

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85064916881&origin=recordpage

U2 - 10.1016/j.intermet.2019.106476

DO - 10.1016/j.intermet.2019.106476

M3 - RGC 21 - Publication in refereed journal

SN - 0966-9795

VL - 110

JO - Intermetallics

JF - Intermetallics

M1 - 106476

ER -