Synergistic strengthening of a TiZrNiAlCu high-entropy alloy by phase transformation and nanophase precipitation under ultrahigh pressure

IF 4.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics Pub Date : 2025-01-04 DOI:10.1016/j.intermet.2024.108634

Duo Dong , Huiqing Xie , Yanyan Huang , Dongdong Zhu , Ning Fang , Tengfei Ma , Xiaohong Wang

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Abstract

Ultrahigh-pressure solidification is a solidification technique carried out in a high-pressure environment. It can significantly change the solidification behavior, thus affecting their mechanical properties. On this basis, this work aims to explore the feasibility of modulating the strength of TiZrNiAlCu high-entropy alloys via the ultrahigh-pressure method. The transformation of the BCC phase into the HCP phase and nanoprecipitated phase is the key to optimizing the mechanical properties under the 7 GPa high-pressure solidification condition; the hardness of the matrix W phase (TiZr-rich) increases by 16 % from 7.46 to 8.676 GPa, the yield strength increases by 19 % from 1.184 to 1.418 GPa, and the hardness of the B phase (NiAl-rich) increases by 19 % from 7.621 to 8.466 GPa. GPa to 8.466 GPa, an increase of 11 %, and the yield strength increases from 1.212 GPa to 1.378 GPa, an increase of 13 %. This work provides a new direction for microstructure based strengthening of high-entropy alloys.

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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.