A novel FeCrNiAlTi-based high entropy alloy strengthened by refined grains

Danni Yang; Yong Liu; Haopeng Jiang; Mingqing Liao; Nan Qu; Tianyi Han; Zhonghong Lai; Jingchuan Zhu

doi:10.1016/j.jallcom.2020.153729

A novel FeCrNiAlTi-based high entropy alloy strengthened by refined grains

Danni Yang
, Yong Liu
, Haopeng Jiang
, Mingqing Liao
, Nan Qu
, Tianyi Han
, Zhonghong Lai
, Jingchuan Zhu^*

^*Corresponding author for this work

School of Materials Science and Engineering

Harbin Institute of Technology
Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

68 Scopus citations

Abstract

A grain refined FeCrNiAlTi_0.2 high entropy alloy (HEA) was firstly produced by powder metallurgy, and the alloy combines well with high strength, good ductility and low cost. The sintered HEA exhibits a major body-centered cubic (BCC) matrix and a minor ordered BCC (B2) phase. The alloy possesses an excellent properties, reaching the yield strength of 1877 MPa and plastic strain of 26.6% at room temperature. Compared with the current FeCrNi-based HEAs, the compressive strength is improved distinctly without sacrificing plastic strain. The analysis of strengthening mechanism suggests that the main strengthening contribution is the grain boundary strengthening.

Original language	English
Article number	153729
Journal	Journal of Alloys and Compounds
Volume	823
DOIs	https://doi.org/10.1016/j.jallcom.2020.153729
State	Published - 15 May 2020

Keywords

Grain boundary strengthening
High entropy alloys
Mechanical properties
Powder metallurgy
Scanning electron microscopy

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10.1016/j.jallcom.2020.153729

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title = "A novel FeCrNiAlTi-based high entropy alloy strengthened by refined grains",

abstract = "A grain refined FeCrNiAlTi0.2 high entropy alloy (HEA) was firstly produced by powder metallurgy, and the alloy combines well with high strength, good ductility and low cost. The sintered HEA exhibits a major body-centered cubic (BCC) matrix and a minor ordered BCC (B2) phase. The alloy possesses an excellent properties, reaching the yield strength of 1877 MPa and plastic strain of 26.6\% at room temperature. Compared with the current FeCrNi-based HEAs, the compressive strength is improved distinctly without sacrificing plastic strain. The analysis of strengthening mechanism suggests that the main strengthening contribution is the grain boundary strengthening.",

keywords = "Grain boundary strengthening, High entropy alloys, Mechanical properties, Powder metallurgy, Scanning electron microscopy",

author = "Danni Yang and Yong Liu and Haopeng Jiang and Mingqing Liao and Nan Qu and Tianyi Han and Zhonghong Lai and Jingchuan Zhu",

note = "Publisher Copyright: {\textcopyright} 2020",

year = "2020",

month = may,

day = "15",

doi = "10.1016/j.jallcom.2020.153729",

language = "英语",

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TY - JOUR

T1 - A novel FeCrNiAlTi-based high entropy alloy strengthened by refined grains

AU - Yang, Danni

AU - Liu, Yong

AU - Jiang, Haopeng

AU - Liao, Mingqing

AU - Qu, Nan

AU - Han, Tianyi

AU - Lai, Zhonghong

AU - Zhu, Jingchuan

PY - 2020/5/15

Y1 - 2020/5/15

N2 - A grain refined FeCrNiAlTi0.2 high entropy alloy (HEA) was firstly produced by powder metallurgy, and the alloy combines well with high strength, good ductility and low cost. The sintered HEA exhibits a major body-centered cubic (BCC) matrix and a minor ordered BCC (B2) phase. The alloy possesses an excellent properties, reaching the yield strength of 1877 MPa and plastic strain of 26.6% at room temperature. Compared with the current FeCrNi-based HEAs, the compressive strength is improved distinctly without sacrificing plastic strain. The analysis of strengthening mechanism suggests that the main strengthening contribution is the grain boundary strengthening.

AB - A grain refined FeCrNiAlTi0.2 high entropy alloy (HEA) was firstly produced by powder metallurgy, and the alloy combines well with high strength, good ductility and low cost. The sintered HEA exhibits a major body-centered cubic (BCC) matrix and a minor ordered BCC (B2) phase. The alloy possesses an excellent properties, reaching the yield strength of 1877 MPa and plastic strain of 26.6% at room temperature. Compared with the current FeCrNi-based HEAs, the compressive strength is improved distinctly without sacrificing plastic strain. The analysis of strengthening mechanism suggests that the main strengthening contribution is the grain boundary strengthening.

KW - Grain boundary strengthening

KW - High entropy alloys

KW - Mechanical properties

KW - Powder metallurgy

KW - Scanning electron microscopy

UR - https://www.scopus.com/pages/publications/85078667658

U2 - 10.1016/j.jallcom.2020.153729

DO - 10.1016/j.jallcom.2020.153729

M3 - 文章

AN - SCOPUS:85078667658

SN - 0925-8388

VL - 823

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

M1 - 153729

ER -

A novel FeCrNiAlTi-based high entropy alloy strengthened by refined grains

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Keywords

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