Fe含量对Cu-Ti-Ni-xFe合金组织与性能的影响

doi:10.13251/j.issn.0254-6051.2024.01.014

金属热处理 ›› 2024, Vol. 49 ›› Issue (1): 96-102.DOI: 10.13251/j.issn.0254-6051.2024.01.014

Fe含量对Cu-Ti-Ni-xFe合金组织与性能的影响

靖青秀, 彭勇, 肖翔鹏, 韦丹丹, 杨雪晴, 黄晓东

江西理工大学材料冶金化学学部, 江西赣州 341000

收稿日期:2023-08-08 修回日期:2023-11-14 发布日期:2024-02-29
通讯作者: 黄晓东,副教授,硕士,E-mail:huangmail3@126.com
作者简介:靖青秀(1975—),女,副教授,博士,主要研究方向为铜基新材料研发,E-mail:1315335810@qq.com。
基金资助:
国家自然科学基金(51561008)

Effect of Fe content on microstructure and properties of Cu-Ti-Ni-xFe alloys

Jing Qingxiu, Peng Yong, Xiao Xiangpeng, Wei Dandan, Yang Xueqing, Hang Xiaodong

Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou Jiangxi 341000, China

Received:2023-08-08 Revised:2023-11-14 Published:2024-02-29

摘要/Abstract

摘要： 采用Pandat软件绘制了Cu-2.5Ti-2Ni-xFe四元合金相图,对Fe元素在合金中的存在形式进行了预测。然后通过真空熔炼制备了4种不同Fe含量的Cu-2.5Ti-2Ni-xFe(x=0, 0.4, 0.8, 1.5)合金,再经退火、热轧、固溶、冷轧和时效处理工艺,探究了Fe含量对铸态及时效态Cu-Ti-Ni-xFe合金组织与性能的影响。结果表明,Fe元素在Cu-2.5Ti-2Ni-xFe合金中以FeTi相、Fe₂Ti相的形式存在,Fe的添加会导致铸态组织中产生粗大的第二相,使合金的硬度降低。但是经时效处理后,添加Fe元素的合金硬度和导电率获得明显提升,抗高温软化性能也更优,其中以Cu-2.5Ti-2Ni-0.8Fe合金的性能最佳,其硬度和导电率分别为274.26 HV和17.6%IACS,软化温度达到526 ℃。

关键词: Cu-Ti-Ni-Fe合金, 显微组织, 物理性能, 抗软化性能, Fe含量

Abstract: Phase diagram of Cu-2.5Ti-2Ni-xFe quaternary alloy was drawn by Pandat software, and the existing form of Fe in the alloy was predicted. Subsequently, four Cu-2.5Ti-2Ni-xFe(x=0, 0.4, 0.8, 1.5) alloys with different Fe contents were prepared by vacuum melting, annealing, hot rolling, solid solution treatment, cold rolling and aging to investigate the effects of Fe content on the microstructure and properties of the as-cast and aged Cu-Ti-Ni-xFe alloys. The results show that Fe exists in the form of FeTi phase and Fe₂Ti phase in the Cu-2.5Ti-2Ni-xFe alloys, and the addition of Fe leads to the formation of coarse second phase in the as-cast microstructure, which reduces the hardness of the alloy. However, after aging, the hardness and electrical conductivity of the alloys with Fe addition are obviously improved, and the high temperature softening resistance is also better. Among the alloys, the Cu-2.5Ti-2Ni-0.8Fe alloy has the best properties, its hardness and electrical conductivity are 274.26 HV and 17.6%IACS, respectively, and its softening temperature reaches 526 ℃.

Key words: Cu-Ti-Ni-Fe alloy, microstructure, physical property, softening resistance, Fe content

中图分类号:

TG146.1

靖青秀, 彭勇, 肖翔鹏, 韦丹丹, 杨雪晴, 黄晓东. Fe含量对Cu-Ti-Ni-xFe合金组织与性能的影响[J]. 金属热处理, 2024, 49(1): 96-102.

Jing Qingxiu, Peng Yong, Xiao Xiangpeng, Wei Dandan, Yang Xueqing, Hang Xiaodong. Effect of Fe content on microstructure and properties of Cu-Ti-Ni-xFe alloys[J]. Heat Treatment of Metals, 2024, 49(1): 96-102.

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Fe含量对Cu-Ti-Ni-xFe合金组织与性能的影响

Effect of Fe content on microstructure and properties of Cu-Ti-Ni-xFe alloys

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