Creep, fatigue, and fracture behavior of high-entropy alloys

被引:0
作者
Weidong Li
Gang Wang
Shiwei Wu
Peter K. Liaw
机构
[1] The University of Tennessee,Department of Materials Science and Engineering
[2] Shanghai University,Laboratory for Microstructures, Institute of Materials
来源
Journal of Materials Research | 2018年 / 33卷
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摘要
As high-entropy alloys (HEAs) are being actively explored for next-generation structural materials, gaining a comprehensive understanding of their creep, fatigue, and fracture behaviors is indispensable. These three aspects of mechanical properties are particularly important because (i) creep resistance dictates an alloy’s high-temperature applications; (ii) fatigue failure is the most frequently encountered failure mode in the service life of a material; (iii) fracture is the very last step that a material loses its load-carrying capability. In consideration of their importance in designing HEAs toward applicable structural materials, this article offers a comprehensive review on what has been accomplished so far in these three topics. The sub-topics covered include a comparison of different creep testing methods, creep-parameter extraction, creep mechanism, high-cycle fatigue S–N relation, fatigue-crack-growth behavior, fracture toughness, fracture under different loading conditions, and fractography. Directions for future efforts are suggested in the end.
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页码:3011 / 3034
页数:23
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