Laser powder bed fusion to fabricate high-entropy alloy FeCoCrNiMo0.5 with excellent high-temperature strength and ductility

Danyang Lin; Qi Chen; Xin Xi; Rui Ma; Zhifeng Shi; Xiaoguo Song; Hongbo Xia; Hong Bian; Caiwang Tan; Yongxin Lu; Runsheng Li

doi:10.1016/j.msea.2024.146413

Laser powder bed fusion to fabricate high-entropy alloy FeCoCrNiMo_0.5 with excellent high-temperature strength and ductility

Danyang Lin
, Qi Chen
, Xin Xi
, Rui Ma
, Zhifeng Shi
, Xiaoguo Song^*
, Hongbo Xia^*
, Hong Bian
, Caiwang Tan
, Yongxin Lu
, Runsheng Li

^*Corresponding author for this work

School of Materials Science and Engineering

Harbin Institute of Technology Weihai
Harbin Institute of Technology
Beijing Power Machinery Institute
Xi'an Shiyou University
China University of Petroleum (East China)

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

49 Scopus citations

Abstract

FeCoCrNi, a high-entropy alloy fabricated by laser powder bed fusion, has excellent room-temperature mechanical properties but poor high-temperature mechanical performance. To expand the application of FeCoCrNi, in this study, we added Mo to form σ precipitates, which improved the high-temperature mechanical properties of the alloy via Orowan strengthening. We also elucidated the main deformation mechanism of FeCoCrNiMo_0.5, involving the transformation of the deformational mode from dislocation-based motion to twinning deformation.

Original language	English
Article number	146413
Journal	Materials Science and Engineering: A
Volume	900
DOIs	https://doi.org/10.1016/j.msea.2024.146413
State	Published - May 2024

Keywords

High-entropy alloy
High-temperature mechanical properties
Laser powder bed fusion
Strengthening mechanism

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10.1016/j.msea.2024.146413

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title = "Laser powder bed fusion to fabricate high-entropy alloy FeCoCrNiMo0.5 with excellent high-temperature strength and ductility",

abstract = "FeCoCrNi, a high-entropy alloy fabricated by laser powder bed fusion, has excellent room-temperature mechanical properties but poor high-temperature mechanical performance. To expand the application of FeCoCrNi, in this study, we added Mo to form σ precipitates, which improved the high-temperature mechanical properties of the alloy via Orowan strengthening. We also elucidated the main deformation mechanism of FeCoCrNiMo0.5, involving the transformation of the deformational mode from dislocation-based motion to twinning deformation.",

keywords = "High-entropy alloy, High-temperature mechanical properties, Laser powder bed fusion, Strengthening mechanism",

author = "Danyang Lin and Qi Chen and Xin Xi and Rui Ma and Zhifeng Shi and Xiaoguo Song and Hongbo Xia and Hong Bian and Caiwang Tan and Yongxin Lu and Runsheng Li",

note = "Publisher Copyright: {\textcopyright} 2024",

year = "2024",

month = may,

doi = "10.1016/j.msea.2024.146413",

language = "英语",

volume = "900",

journal = "Materials Science and Engineering: A",

issn = "0921-5093",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Laser powder bed fusion to fabricate high-entropy alloy FeCoCrNiMo0.5 with excellent high-temperature strength and ductility

AU - Lin, Danyang

AU - Chen, Qi

AU - Xi, Xin

AU - Ma, Rui

AU - Shi, Zhifeng

AU - Song, Xiaoguo

AU - Xia, Hongbo

AU - Bian, Hong

AU - Tan, Caiwang

AU - Lu, Yongxin

AU - Li, Runsheng

PY - 2024/5

Y1 - 2024/5

N2 - FeCoCrNi, a high-entropy alloy fabricated by laser powder bed fusion, has excellent room-temperature mechanical properties but poor high-temperature mechanical performance. To expand the application of FeCoCrNi, in this study, we added Mo to form σ precipitates, which improved the high-temperature mechanical properties of the alloy via Orowan strengthening. We also elucidated the main deformation mechanism of FeCoCrNiMo0.5, involving the transformation of the deformational mode from dislocation-based motion to twinning deformation.

AB - FeCoCrNi, a high-entropy alloy fabricated by laser powder bed fusion, has excellent room-temperature mechanical properties but poor high-temperature mechanical performance. To expand the application of FeCoCrNi, in this study, we added Mo to form σ precipitates, which improved the high-temperature mechanical properties of the alloy via Orowan strengthening. We also elucidated the main deformation mechanism of FeCoCrNiMo0.5, involving the transformation of the deformational mode from dislocation-based motion to twinning deformation.

KW - High-entropy alloy

KW - High-temperature mechanical properties

KW - Laser powder bed fusion

KW - Strengthening mechanism

UR - https://www.scopus.com/pages/publications/85190772290

U2 - 10.1016/j.msea.2024.146413

DO - 10.1016/j.msea.2024.146413

M3 - 文章

AN - SCOPUS:85190772290

SN - 0921-5093

VL - 900

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

M1 - 146413

ER -

Laser powder bed fusion to fabricate high-entropy alloy FeCoCrNiMo_0.5 with excellent high-temperature strength and ductility

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Keywords

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