金属玻璃的尺寸依赖性力学响应

IF 16.8 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY International Materials Reviews Pub Date : 2019-04-03 DOI:10.1080/09506608.2018.1476079
Yunfeng Shi
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引用次数: 32

摘要

金属玻璃(MGs)可以说是近30年来最令人兴奋的金属体系之一,吸引了大量的研究工作,并经历了快速的发展。与晶体金属的研究平行,样品尺寸已被用作mg的性能调整参数。研究表明,纳米级MG样品具有高于体的弹性极限、抗拉强度和非零拉伸延展性。虽然一些与尺寸相关的观察结果已被普遍接受,但其他一些观察结果却知之甚少,甚至引发了激烈的争论。特别感兴趣的是实验中样品制备和模拟中模型生成的重要性。在这里,我们将回顾样本大小如何影响机械性能,包括弹性、塑性、断裂性能和疲劳耐久性,以及各种提出的尺寸相关机制和相关长度尺度。
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Size-dependent mechanical responses of metallic glasses
ABSTRACT Metallic glasses (MGs) are arguably one of the most exciting metallic systems in the past 30 years, attracting significant research effort and undergoing rapid development. Parallel to research on crystalline metals, the sample size has been exploited as property-tuning parameters for MGs. It has been shown that nanometre-sized MG samples exhibit higher-than-bulk elastic limit, tensile strength, and non-zero tensile ductility. While some of the size-related observations have been generally accepted, others have been poorly understood, even hotly debated. Of particular interests is the importance of sample preparation in experiments and model generation in simulations. Here, we will review how the sample size affects mechanical properties including the elastic, plastic, fracture properties, and fatigue endurance, as well as various proposed size-dependent mechanisms and relevant length scales.
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来源期刊
International Materials Reviews
International Materials Reviews 工程技术-材料科学:综合
CiteScore
28.50
自引率
0.00%
发文量
21
审稿时长
6 months
期刊介绍: International Materials Reviews (IMR) is a comprehensive publication that provides in-depth coverage of the current state and advancements in various materials technologies. With contributions from internationally respected experts, IMR offers a thorough analysis of the subject matter. It undergoes rigorous evaluation by committees in the United States and United Kingdom for ensuring the highest quality of content. Published by Sage on behalf of ASM International and the Institute of Materials, Minerals and Mining (UK), IMR is a valuable resource for professionals in the field. It is available online through Sage's platform, facilitating convenient access to its wealth of information. Jointly produced by ASM International and the Institute of Materials, Minerals and Mining (UK), IMR focuses on technologies that impact industries dealing with metals, structural ceramics, composite materials, and electronic materials. Its coverage spans from practical applications to theoretical and practical aspects of material extraction, production, fabrication, properties, and behavior.
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