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Fatigue and Fracture Behavior of Bulk Metallic Glasses and Their Composites
Progress in Materials Science ( IF 37.4 ) Pub Date : 2018-10-01 , DOI: 10.1016/j.pmatsci.2018.07.002
Haoling Jia , Gongyao Wang , Shuying Chen , Yanfei Gao , Weidong Li , Peter K. Liaw

Abstract A fundamental understanding of the fatigue and fracture behavior of bulk metallic glasses (BMGs) and their composites is of critical significance for designing new BMG systems and developing new manufacturing and processing techniques so as to broaden the scope of applications of BMGs and their composites. However, the fatigue and fracture studies on BMGs are limited so far, compared to other mechanical properties. The present work reviews the fatigue and fracture behavior of BMGs and their composites, as well as that of metallic-glass films, ribbons, and wires. The grand challenge for the fatigue and fracture performance of BMGs is: What produces a large difference among the fatigue and fracture results of BMGs? According to the fatigue and fracture investigations of crystalline alloys including recently invented high entropy alloys, many factors could be involved, such as the composition, material quality, specimen geometry, chemical environment, surface condition, temperature, cyclic frequency, mean stress, and residual stress, etc. Based on this challenge, the present work will review and address the factors affecting the fatigue and fracture behavior of BMGs and their composites. Furthermore, the mechanisms of fatigue-crack initiation, propagation, and fracture of BMGs and their composites in different loading conditions and environments will be outlined, analyzed, and discussed. Future research directions of fatigue and fracture of BMGs and their composites are provided for reference.

中文翻译:

块状金属玻璃及其复合材料的疲劳和断裂行为

摘要 对大块金属玻璃(BMGs)及其复合材料的疲劳和断裂行为的基本认识对于设计新的BMG系统和开发新的制造和加工技术以拓宽BMGs及其复合材料的应用范围具有重要意义。然而,与其他机械性能相比,BMG 的疲劳和断裂研究到目前为止是有限的。目前的工作回顾了 BMG 及其复合材料的疲劳和断裂行为,以及金属玻璃膜、带和线的疲劳和断裂行为。BMGs疲劳和断裂性能的巨大挑战是:是什么导致BMGs疲劳和断裂结果之间存在巨大差异?根据包括最近发明的高熵合金在内的结晶合金的疲劳和断裂研究,可能涉及许多因素,例如成分、材料质量、试样几何形状、化学环境、表面条件、温度、循环频率、平均应力和残余应力等。 基于这一挑战,目前的工作将审查和解决影响 BMGs 及其复合材料疲劳和断裂行为的因素。此外,还将概述、分析和讨论 BMG 及其复合材料在不同加载条件和环境下的疲劳裂纹萌生、扩展和断裂机制。为BMGs及其复合材料疲劳断裂的未来研究方向提供参考。和残余应力等。基于这一挑战,目前的工作将审查和解决影响 BMGs 及其复合材料疲劳和断裂行为的因素。此外,还将概述、分析和讨论 BMG 及其复合材料在不同加载条件和环境下的疲劳裂纹萌生、扩展和断裂机制。为BMGs及其复合材料疲劳断裂的未来研究方向提供参考。和残余应力等。基于这一挑战,目前的工作将审查和解决影响 BMGs 及其复合材料疲劳和断裂行为的因素。此外,还将概述、分析和讨论 BMG 及其复合材料在不同加载条件和环境下的疲劳裂纹萌生、扩展和断裂机制。为BMGs及其复合材料疲劳断裂的未来研究方向提供参考。
更新日期:2018-10-01
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