高熵高温合金的钉钉强化

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

Scripta Materialia Pub Date : 2025-07-20 DOI:10.1016/j.scriptamat.2025.116874

Erika Zaiser , Adnan Fareed , Anna M. Manzoni , Melanie C. Paulisch-Rinke , Wei-Che Hsu , An-Chou Yeh , Hideyuki Murakami , Florian Vogel , Robert Maaß

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引用次数: 0

摘要

高熵高温合金的分层微观结构设计提供了超越经典高温合金的新型强化途径。在这里，我们评估了有或没有额外的内部γ纳米相的分离γ′沉淀的强度。结果表明，γ′相内的纳米析出导致位错成核极限屈服强度显著降低。与无序驱动的γ′相化学弱化相一致，这些发现表明，高熵高温合金中由于分层微观结构设计而产生的体强化主要是钉钉主导的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Pinning-dominated strengthening in high-entropy superalloys

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Pinning-dominated strengthening in high-entropy superalloys

Hierarchical microstructural design of high-entropy superalloys offers novel strengthening pathways beyond classical superalloys. Here we assess the strength of isolated γ’ precipitates with and without an additional internal γ nanophase. The results show that nano-precipitation within the γ’ phase leads to a marked statistical reduction of the dislocation-nucleation limited yield strength. In concert with disorder-driven chemical weakening of the γ’ phase, these findings indicate that bulk strengthening due to hierarchical microstructural design in high-entropy superalloys must primarily be pinning dominated.

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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.