Microstructural Evolution and Dry Sliding Wear Behavior of a Cu-Cr-Zr Alloy Processed by Cyclic Hot Forging and Short-Time Aging.

Chenghua Gao, Ao Meng, Zihao Wang, Wei Jiang, Zhumin Li, Yu Zhao, Jiansheng Li

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Article in Materials (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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Authors and funding

7 authors.

Chenghua GaoSchool of Materials Science and Engineering, Anhui Polytechnic University, Wuhu 241000, China.

Ao MengSchool of Materials Science and Engineering, Anhui Polytechnic University, Wuhu 241000, China.

Zihao WangSchool of Materials Science and Engineering, Anhui Polytechnic University, Wuhu 241000, China.

Wei JiangSchool of Materials Science and Engineering, Anhui Polytechnic University, Wuhu 241000, China.

Zhumin LiSchool of Materials Science and Engineering, Anhui Polytechnic University, Wuhu 241000, China.

Yu ZhaoSchool of Materials Science and Engineering, Anhui Polytechnic University, Wuhu 241000, China.

Jiansheng LiSchool of Materials Science and Engineering, Anhui Polytechnic University, Wuhu 241000, China.

Funding

Anhui Polytechnic University S022024025Open Research Fund of Anhui Key Laboratory of Advanced Non-ferrous Metal Materials YSJS-2025-02, YSJS-2025-11Wuhu Science and Technology Project 2025kj015

6 · The paper itself

Abstract

To elucidate the effect of cyclic hot forging and short-time aging (HFSTA) on the wear resistance of a Cu-Cr-Zr alloy, samples in the as-received state (solution-treated at 1000 °C) and after 4 passes and 6 passes of cyclic HFSTA at 450 °C were prepared. The relationships between microstructure and properties were systematically analyzed. The results indicate that the cyclic HFSTA process did not change the main phase structure of the Cu matrix but significantly tailored the grain morphology, local misorientation, grain boundary character, and tribo-chemical behavior of the surface. The 4-passes sample possessed relatively high hardness, electrical conductivity, and favorable microstructural stability and was able to form a continuous and dense oxide protective film during friction, as demonstrated by the increase in hardness from 86 HV (as-received) to 195 HV, the decrease in average coefficient of friction (COF) from 0.65 to 0.50, and the reduction in wear rate from 13.3 × 10

Indexed as

Cu-Cr-Zr alloyfriction and wearhot forgingmicrostructural evolution

Identifiers

PMID42654528

DOI10.3390/ma19163374

PMCPMC13514392

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