Fatigue behavior of high-entropy alloys： A review

Fatigue failures cost approximately 4% of the United States＇ gross domestic product （GDP）. The design of highly fatigue-resistant materials is always in demand. Different from conventional strategies of alloy design, high-entropy alloys （HEAs） are defined as materials with five or more principal ele...

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Published inScience China. Technological sciences Vol. 61; no. 2; pp. 168 - 178
Main Authors Chen, PeiYong, Lee, Chanho, Wang, Shao-Yu, Seifi, Mohsen, Lewandowski, John J., Dahmen, Karin A., Jia, HaoLing, Xie, Xie, Chen, BiLin, Yeh, Jien-Wei, Tsai, Che-Wei, Yuan, Tao, Liaw, Peter K.
Format Journal Article
LanguageEnglish
Published Beijing Science China Press 01.02.2018
Springer Nature B.V
Springer
Subjects
Alloying elements
Bending fatigue
Crack propagation
Deformation effects
Deformation mechanisms
Engineering
Fatigue failure
Heat treating
High cycle fatigue
High entropy alloys
Materials Science
Metal matrix composites
Review
Solid solutions
Statistical models
Stress ratio
疲劳行为;合金设计;评论;熵;疲劳性质;HEA;国内产品;统计建模
statistical modelling
fatigue behaviour
high-entropy alloys
fatigue crack growth
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Summary:Fatigue failures cost approximately 4% of the United States＇ gross domestic product （GDP）. The design of highly fatigue-resistant materials is always in demand. Different from conventional strategies of alloy design, high-entropy alloys （HEAs） are defined as materials with five or more principal elements, which could be solid solutions. This locally-disordered structure is expected to lead to unique fatigue-resistant properties. In this review, the studies of the fatigue behavior of HEAs during the last five years are summarized. The four-point-bending high-cycle fatigue coupled with statistical modelling, and the fatigue-crack-growth behavior of HEAs, are reviewed. The effects of sample defects and nanotwins-deformation mechanisms on four-point-bending high-cycle fatigue of HEAs are discussed in detail. The influence of stress ratio and temperature on fatigue-crack-growth characteristics of HEAs is also discussed. HEAs could exhibit comparable or greater fatigue properties, relative to conventional materials. Finally, the possible future work regarding the fatigue behavior of HEAs is suggested.
Bibliography:Fatigue failures cost approximately 4% of the United States＇ gross domestic product （GDP）. The design of highly fatigue-resistant materials is always in demand. Different from conventional strategies of alloy design, high-entropy alloys （HEAs） are defined as materials with five or more principal elements, which could be solid solutions. This locally-disordered structure is expected to lead to unique fatigue-resistant properties. In this review, the studies of the fatigue behavior of HEAs during the last five years are summarized. The four-point-bending high-cycle fatigue coupled with statistical modelling, and the fatigue-crack-growth behavior of HEAs, are reviewed. The effects of sample defects and nanotwins-deformation mechanisms on four-point-bending high-cycle fatigue of HEAs are discussed in detail. The influence of stress ratio and temperature on fatigue-crack-growth characteristics of HEAs is also discussed. HEAs could exhibit comparable or greater fatigue properties, relative to conventional materials. Finally, the possible future work regarding the fatigue behavior of HEAs is suggested.
11-5845/TH
high-entropy alloys, fatigue behaviour, statistical modelling, fatigue crack growth
CHEN PeiYongl, LEE Chanhol, WANG Shao-Yul, SEIF1 Mohsen2, LEWANDOWSKI John J 2, DAHMEN Karin A3, JIA HaoLingl, XIE Xiej, CHEN BiLinj, YEH Jien-Wei4, TSAI Che-Wei4, YUAN Tao5 ＆ LIAW Peter Kl（ 1 Department of Materials Science and Engineering, The University of Tennessee, Kno~wille 37996, USA： 2 Department of Materials Seienee and Engineering, Case Western University, Cleveland 44106, USA; 3 Department of Physies, University of Illinois, Urbana 61801, USA; 4 Department of Materials Science and Engineering, ＇National＇ Tsing Hua University, Hsinchu 30013, Taiwan, China 5 Department of Industry and System Engineering, Ohio University, Athens 45701, USA）
FE0011194; FE0024054
USDOE Office of Fossil Energy (FE)
ISSN:1674-7321
1869-1900
DOI:10.1007/s11431-017-9137-4