High-temperature pre-aging induced coherent precipitation for Concurrent strength and conductivity enhancement in Cu-Mn-Co-P alloys

IF 6.1 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Science and Engineering: A Pub Date : 2025-02-19 DOI:10.1016/j.msea.2025.148098

Chengzhi Zhang , Rui Zhou , Xue Xiao , Yuhan Wang , Weilin Gao , Qingkui Li , Jilin He

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引用次数: 0

Abstract

High-performance copper alloys are critical materials for next-generation electronic applications. This study investigates the effect of high-temperature pre-aging on the microstructure and properties of Cu-0.33Mn-0.31Co-0.17P (wt.%) alloy. Pre-aging promotes the formation of Guinier-Preston (GP) zones and nanoscale (Mn,Co)₂P precipitates, reducing subsequent aging temperature and enhancing precipitation kinetics. Compared to the conventional SCA process (950 °C for 30 min, cold-rolled, and aged at 500 °C for 4 h), the SPACA process (950 °C for 30 min, pre-aged at 650 °C for 10 min, cold-rolled, and aged at 360 °C for 8 h) increases tensile strength by 55 MPa and electrical conductivity by 8.1 % IACS, achieving values of 715 MPa and 70.9 % IACS. This demonstrates the potential of high-temperature pre-aging for achieving a balanced enhancement of mechanical and electrical properties in copper alloys.

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来源期刊

Materials Science and Engineering: A 工程技术-材料科学：综合

CiteScore

11.50

自引率

15.60%

发文量

1811

审稿时长

31 days

期刊介绍： Materials Science and Engineering A provides an international medium for the publication of theoretical and experimental studies related to the load-bearing capacity of materials as influenced by their basic properties, processing history, microstructure and operating environment. Appropriate submissions to Materials Science and Engineering A should include scientific and/or engineering factors which affect the microstructure - strength relationships of materials and report the changes to mechanical behavior.