Comparative analysis of nanoindentation-induced incipient deformation of zirconium-based bulk metallic glass in various structural states

IF 4.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics Pub Date : 2024-03-29 DOI:10.1016/j.intermet.2024.108269

Silvia Pomes , Nozomu Adachi , Masato Wakeda , Takahito Ohmura

引用次数: 0

Abstract

The incipient plastic deformation behaviour of as-cast and annealed samples of Zr₅₀Cu₄₀Al₁₀ (atom %) bulk metallic glass was investigated by nanoindentation. A validated load-over-displacement versus displacement plot showed the existence of a precursor event to incipient plasticity in both samples. The activation stress remained consistent in both samples, indicating that the event corresponds to local behaviour in regions with the same energy state, and it is not influenced by the overall microstructure. Conversely, the first serration detected in the as-relaxed sample exhibited a greater magnitude, potentially arising from a distinct energy-dissipation rate related to larger-scale microstructural characteristics.

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不同结构状态下锆基块状金属玻璃纳米压痕诱发萌生变形的对比分析

通过纳米压痕法研究了 Zr50Cu40Al10（原子%）块状金属玻璃的铸造和退火样品的萌生塑性变形行为。经过验证的载荷-过位移与位移关系图显示，两种样品都存在萌生塑性的前兆事件。两个样品中的活化应力保持一致，表明该事件与具有相同能量状态区域的局部行为相对应，不受整体微观结构的影响。相反，在松弛样品中检测到的第一道锯齿的幅度更大，这可能是由于与更大尺度的微观结构特征相关的独特能量耗散率引起的。

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

Intermetallics 工程技术-材料科学：综合

CiteScore

7.80

自引率

9.10%

发文量

291

审稿时长

37 days

期刊介绍： This journal is a platform for publishing innovative research and overviews for advancing our understanding of the structure, property, and functionality of complex metallic alloys, including intermetallics, metallic glasses, and high entropy alloys. The journal reports the science and engineering of metallic materials in the following aspects: Theories and experiments which address the relationship between property and structure in all length scales. Physical modeling and numerical simulations which provide a comprehensive understanding of experimental observations. Stimulated methodologies to characterize the structure and chemistry of materials that correlate the properties. Technological applications resulting from the understanding of property-structure relationship in materials. Novel and cutting-edge results warranting rapid communication. The journal also publishes special issues on selected topics and overviews by invitation only.

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