固溶时效工艺对Cu-Ni-Co-Si合金组织和性能的影响

doi:10.13251/j.issn.0254-6051.2020.07.003

金属热处理 ›› 2020, Vol. 45 ›› Issue (7): 11-16.DOI: 10.13251/j.issn.0254-6051.2020.07.003

固溶时效工艺对Cu-Ni-Co-Si合金组织和性能的影响

邹金峰, 余方新, 程建奕, 蔡志俊

南昌大学材料科学与工程学院, 江西南昌 330031

收稿日期:2019-12-28 出版日期:2020-07-25 发布日期:2020-09-07
通讯作者: 余方新, 副教授, 博士, E-mail:yufangxin@ncu.edu.cn
作者简介:邹金峰(1998—), 男, 学士, 主要研究方向为金属材料材料先进制备加工技术, E-mail:Jinfengzou1998@163.com。
基金资助:
国家自然科学基金(51661022); 国家科技部重点研发计划(2016YFB0301302)

Effect of solution and aging on microstructure and properties of Cu-Ni-Co-Si alloy

Zou Jinfeng, Yu Fangxin, Cheng Jianyi, Cai Zhijun

School of Materials Science and Engineering, Nanchang University, Nanchang Jiangxi 330031, China

Received:2019-12-28 Online:2020-07-25 Published:2020-09-07

摘要/Abstract

摘要： 通过硬度和导电率的测量、光学显微镜和透射电镜(TEM),研究了固溶时效工艺对Cu-Ni-Co-Si合金组织和性能的影响。结果表明:经过950 ℃×30 min水淬+500 ℃×480 min随炉冷却后,Cu-Ni-Co-Si 合金得到良好的综合性能:硬度为243.55 HV3,导电率为42.24%IACS;添加少量的V有利于提高二次时效后合金的导电率,并且进行适当的一次时效对提高合金的导电率和硬度是有利的,可以使二次时效试样迅速获得良好的综合性能;Cu-Ni-Co-Si合金的主要强化相为盘状正交结构的δ-(Co,Ni)₂Si,过饱和固溶体析出的沉淀物均匀分布,但位错缠结始终存在,其中基体与析出相的位向关系为[001]_m//[110]_p, (010)_m //(001)_p。

关键词: Cu-Ni-Co-Si合金, 固溶温度, 时效, 性能, 组织

Abstract: Effects of solution and aging on the properties and microstructure of Cu-Ni-Co-Si alloy were investigated by means of hardness and electrical conductivity measurement, optical microscope and transmission electron microscope (TEM). The results show that the Cu-Ni-Co-Si alloy has good comprehensive properties after solution treating at 950 ℃ for 30 min plus aging at 500 ℃ for 480 min, its hardness is 243.55 HV3, electrical conductivity is 42.24%IACS. A few vanadium is beneficial to improve the electrical conductivity of the alloy after two-step aging, and pre-aging is beneficial to improve the electrical conductivity and hardness of the alloy, so that the two-step aging specimen can quickly obtain good comprehensive properties. The main strengthening phases of the Cu-Ni-Co-Si alloy are δ-(Co, Ni)₂Si, and the orientation relationship between the matrix and the precipitate phase is [001]_m//[110]_p, (010)_m //(001)_p.

Key words: Cu-Ni-Co-Si alloy, solution temperature, aging, properties, microstructure

中图分类号:

TG146

邹金峰, 余方新, 程建奕, 蔡志俊. 固溶时效工艺对Cu-Ni-Co-Si合金组织和性能的影响[J]. 金属热处理, 2020, 45(7): 11-16.

Zou Jinfeng, Yu Fangxin, Cheng Jianyi, Cai Zhijun. Effect of solution and aging on microstructure and properties of Cu-Ni-Co-Si alloy[J]. Heat Treatment of Metals, 2020, 45(7): 11-16.

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固溶时效工艺对Cu-Ni-Co-Si合金组织和性能的影响

Effect of solution and aging on microstructure and properties of Cu-Ni-Co-Si alloy

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