Shear Band Control for Improved Strength-Ductility Synergy in Metallic Glasses

IF 12.2 1区 工程技术 Q1 MECHANICS
Z. Sha, Y. Teng, L. H. Poh, T. Wang, Huajian Gao
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引用次数: 7

Abstract

Aside from ultrahigh strength and elasticity, metallic glasses (MGs) possess a number of favorable properties. However, their lack of dislocation based plastic deformation mechanisms in crystalline metals and the resulting loss of ductility have restricted the engineering applications of MGs over the last 60 years. This review aims to provide an overview of deformation and failure mechanisms of MGs via formation and propagation of shear bands (SBs), with an emphasis on the control of SBs to promote strength-ductility synergy. With this goal in mind, we highlight some of the emerging strategies to improve the ductility of MGs. Topics covered include post-processing techniques such as pre-compression, heterogeneity tuning, and rejuvenation, with a primary focus on recent progresses in structural design based methods including nanoglasses, notched MGs, and MG nanolattices, as future innovations towards strength-ductility synergy beyond the current benchmark ranges.
提高金属玻璃强度-延性协同效应的剪切带控制
除了超高的强度和弹性外,金属玻璃(mg)还具有许多有利的性能。然而,由于在结晶金属中缺乏基于位错的塑性变形机制以及由此导致的延性损失,限制了mg合金在过去60年的工程应用。本文旨在通过剪切带(SBs)的形成和传播,概述mggs的变形和破坏机制,并强调控制剪切带以促进强度-延性协同。考虑到这一目标,我们强调了一些新兴的策略,以提高mg的延展性。涵盖的主题包括后处理技术,如预压缩、非均质调谐和回弹,主要关注基于结构设计方法的最新进展,包括纳米玻璃、缺口MG和MG纳米晶格,作为超越当前基准范围的强度-延性协同的未来创新。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
28.20
自引率
0.70%
发文量
13
审稿时长
>12 weeks
期刊介绍: Applied Mechanics Reviews (AMR) is an international review journal that serves as a premier venue for dissemination of material across all subdisciplines of applied mechanics and engineering science, including fluid and solid mechanics, heat transfer, dynamics and vibration, and applications.AMR provides an archival repository for state-of-the-art and retrospective survey articles and reviews of research areas and curricular developments. The journal invites commentary on research and education policy in different countries. The journal also invites original tutorial and educational material in applied mechanics targeting non-specialist audiences, including undergraduate and K-12 students.
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