Searching for evidence of strengthening from short-range order in the CrCoNi medium entropy alloy

IF 5.6 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Scripta Materialia Pub Date : 2025-09-19 DOI:10.1016/j.scriptamat.2025.116997

Novin Rasooli, Matthew Daly

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Abstract

The coupling of strength to short-range order (SRO) in the CrCoNi medium entropy alloy remains actively investigated, with conflicting reports supporting and opposing SRO-induced strengthening continuing to emerge. A direct observation of this effect is elusive, due to difficulties in the quantification of SRO. Here, we deliver a structurally agnostic analysis that instead searches for unusual patterns in crystal size effects as evidence of SRO-induced strengthening. For this purpose, we assemble a large dataset of strengthening measurements drawn from a range of thermomechanical processing conditions known to produce SRO. Based on a comparative analysis with pure metal benchmarks, we find no evidence for significant coupling of SRO to strengthening in CrCoNi, and that patterns suggesting a positive finding may be explained by cross-study measurement scatter. Nevertheless, we leverage our analysis to provide an upper bound estimate of SRO-induced strengthening in the unlikely scenario where other sources of scatter are negligible.

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在CrCoNi中熵合金中寻找短时阶强化的证据

CrCoNi中熵合金中强度与短程有序（SRO）的耦合仍在积极研究中，支持和反对SRO诱导强化的相互矛盾的报告不断出现。由于SRO的量化困难，对这种效应的直接观察是难以捉摸的。在这里，我们提供了一个结构不可知的分析，而是寻找晶体尺寸效应中的异常模式作为sro诱导强化的证据。为此，我们收集了从已知产生SRO的一系列热机械加工条件中提取的强化测量数据集。基于与纯金属基准的比较分析，我们没有发现SRO与CrCoNi中强化的显著耦合的证据，并且表明积极发现的模式可以通过交叉研究测量散点来解释。然而，我们利用我们的分析，在其他散射源可以忽略不计的不太可能的情况下，提供sro引起的强化的上限估计。

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

Scripta Materialia 工程技术-材料科学：综合

CiteScore

11.40

自引率

5.00%

发文量

581

审稿时长

34 days

期刊介绍： Scripta Materialia is a LETTERS journal of Acta Materialia, providing a forum for the rapid publication of short communications on the relationship between the structure and the properties of inorganic materials. The emphasis is on originality rather than incremental research. Short reports on the development of materials with novel or substantially improved properties are also welcomed. Emphasis is on either the functional or mechanical behavior of metals, ceramics and semiconductors at all length scales.