Effect of Process Conditions on Microstructure, Damping Capacity, and Mechanical Properties of Mn-Cu Alloys.

IF 3.2 3区材料科学 Q3 CHEMISTRY, PHYSICAL

Materials Pub Date : 2025-09-20 DOI:10.3390/ma18184391

Liyan Dong, Qiangsong Wang, Yuan Wu, Haofeng Xie, Junru Gao, Xinlu Chai, Kexing Song

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引用次数: 0

Abstract

This study investigated the effects of four heat treatment processes on the microstructure, damping capacity, and mechanical properties of Mn-Cu alloys. The results indicated that the alloy did not undergo spinodal decomposition and twinning after solution treatment. After solution and aging treatment, the alloy underwent spinodal decomposition and formed Mn-rich regions, increasing the martensitic transformation temperature (M_s), promoting martensitic transformation, forming twin boundaries, and enhancing damping capacity and mechanical properties. The cryogenic treatment and furnace cooling process facilitated the process, promoted the formation of twin boundaries, and improved damping capacity, and the degree of promotion by furnace cooling process was more significant. In addition, cryogenic treatment promoted grain refinement, increased dislocation density, improved strength, and facilitated the improvement of mechanical properties. This provided a reference for preparing high-damping Mn-Cu alloys with good comprehensive performance.

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工艺条件对Mn-Cu合金组织、阻尼性能和力学性能的影响

研究了四种热处理工艺对锰铜合金组织、阻尼能力和力学性能的影响。结果表明，固溶处理后合金不发生旋裂和孪晶。经固溶时效处理后，合金发生旋多分解，形成富mn区，提高了马氏体转变温度（Ms），促进了马氏体转变，形成孪晶界，提高了阻尼能力和力学性能。低温处理和炉内冷却工艺促进了这一过程，促进了孪晶界的形成，提高了阻尼能力，且炉内冷却工艺的促进程度更为显著。此外，低温处理促进了晶粒细化，增加了位错密度，提高了强度，有利于力学性能的改善。这为制备综合性能良好的高阻尼锰铜合金提供了参考。

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来源期刊

Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

5.80

自引率

14.70%

发文量

7753

审稿时长

1.2 months

期刊介绍： Materials (ISSN 1996-1944) is an open access journal of related scientific research and technology development. It publishes reviews, regular research papers (articles) and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Materials provides a forum for publishing papers which advance the in-depth understanding of the relationship between the structure, the properties or the functions of all kinds of materials. Chemical syntheses, chemical structures and mechanical, chemical, electronic, magnetic and optical properties and various applications will be considered.