轧制变形对医用Zn-2Cu合金微观组织和性能的影响

兰州理工大学学报 ›› 2026, Vol. 52 ›› Issue (2): 1-7.

• 材料科学与工程 • 下一篇

轧制变形对医用Zn-2Cu合金微观组织和性能的影响

巨江澜¹, 张朋涛², 王成杰², 李庆林^*2

1.甘肃畜牧工程职业技术学院机械工程学院, 甘肃武威 733006;
2.兰州理工大学材料科学与工程学院, 甘肃兰州 730050

收稿日期:2025-04-25 出版日期:2026-04-28 发布日期:2026-04-28
通讯作者: 李庆林(1978-),男,甘肃临洮人,博士,教授. Email:liql301@mail.nwpu.edu.cn
基金资助:
甘肃省重点研发计划(25YFGA026),甘肃省自然科学基金重点项目(23JRRA752)

Effect of rolling deformation on the micro-structure and behavior of biomedical Zn-2Cu alloy

JU Jiang-lan¹, ZHANG Peng-tao²,WANG Cheng-jie², LI Qing-lin²

1. School of Mechanical of Engineering, Gansu Polytechnic College of Animal Husbandry and Engineering, Wuwei 733006, China;
2. School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China

Received:2025-04-25 Online:2026-04-28 Published:2026-04-28

摘要/Abstract

摘要： 通过600 W超声熔体处理制备Zn-2Cu合金铸锭,并将制备合金进行20%、50%和80%的轧制变形,研究不同变形量对合金微观组织、力学性能和腐蚀性能的影响.结果表明:当合金轧制变形量从20%增加到50%时,合金中α-Zn晶粒被显著细化,并沿轧制方向形成明显织构形貌;分布在基体上的CuZn₅相被细化为平均尺寸约为15 μm的椭球状,同时,沿晶界析出尺寸约为1.2 μm细小CuZn₅粒子.合金的屈服强度、抗拉强度和延伸率分别从未变形时的173、203 MPa和8.1%提高到389、404 MPa和42.2%.80%轧制变形量下,由于致密ZnO/Zn(OH)₂钝化膜的形成显著降低腐蚀速率,30 d浸泡后的腐蚀速率从0.398 mm/a降低到0.247 mm/a.

关键词: Zn-2Cu合金, 微观组织, 轧制, 力学性能, 腐蚀速率

Abstract: The Zn-2Cu alloy ingot prepared by 600 W ultrasonic melt treatment was subjected to 20%, 50%, and 80% rolling deformation. The effects of rolling deformation levels on the microstructure, mechanical properties, and corrosion behavior were investigated. The results showed that α-Zn grains are significantly refined as the rolling deformation level from 20% to 50%, and the morphology with distinct texture is formed along the rolling direction. The CuZn₅ precipitates distributed in the matrix are refined into ellipsoidal particles with an average size of 15 μm. Additionally, the fine nano-sized CuZn₅ particles with 1.2 μm precipitate along grain boundaries. As a consequence, the yield strength, tensile strength, and elongation are significantly improved from 173, 203 MPa, and 8.1% in the undeformed state to 389, 404 MPa, and 42.2%, respectively. When the rolling deformation reach 80%, the corrosion rate is significantly reduced due to the formation of dense ZnO/Zn(OH)₂ passivation film. After 30 d immersion, the corrosion rate decrease rapidly from 0.398 mm/a to 0.247 mm/a.

Key words: Zn-2Cu alloy, microstructure, ultrasonic treatment, mechanical properties, corrosion rate

中图分类号:

TG146.21

巨江澜, 张朋涛, 王成杰, 李庆林. 轧制变形对医用Zn-2Cu合金微观组织和性能的影响[J]. 兰州理工大学学报, 2026, 52(2): 1-7.

JU Jiang-lan, ZHANG Peng-tao,WANG Cheng-jie, LI Qing-lin. Effect of rolling deformation on the micro-structure and behavior of biomedical Zn-2Cu alloy[J]. Journal of Lanzhou University of Technology, 2026, 52(2): 1-7.

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链接本文: https://journal.lut.edu.cn/CN/

https://journal.lut.edu.cn/CN/Y2026/V52/I2/1

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轧制变形对医用Zn-2Cu合金微观组织和性能的影响

Effect of rolling deformation on the micro-structure and behavior of biomedical Zn-2Cu alloy

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