Work

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

Year: 2025

Type: article

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 (Ms), 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.

Source: Materials

DOI: 10.3390/ma18184391

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

Institutions: General Research Institute for Nonferrous Metals (China), State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Henan Academy of Sciences

Language: English

Topic: Shape Memory Alloy Transformations

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,137

OpenAlex ID: W4414387708

FWCI: 1.272

Cites: 26

Cited by: 6

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