形变热处理对Cu-Ti-Fe-Sn合金组织与性能的影响

doi:10.13251/j.issn.0254-6051.2022.10.005

金属热处理 ›› 2022, Vol. 47 ›› Issue (10): 24-30.DOI: 10.13251/j.issn.0254-6051.2022.10.005

形变热处理对Cu-Ti-Fe-Sn合金组织与性能的影响

靖青秀, 孙玉晴, 肖翔鹏, 魏渺, 彭勇, 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:2022-05-24 修回日期:2022-08-16 出版日期:2022-10-25 发布日期:2022-12-15
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,主要研究方向为环境污染治理,E-mail:1315335810@qq.com。
基金资助:
国家自然科学基金 (51561008)

Effect of thermo-mechanical heat treatment on microstructure and properties of Cu-Ti-Fe-Sn alloy

Jing Qingxiu, Sun Yuqing, Xiao Xiangpeng, Wei Miao, Peng Yong, Huang Xiaodong

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

Received:2022-05-24 Revised:2022-08-16 Online:2022-10-25 Published:2022-12-15

摘要/Abstract

摘要： 利用真空熔炼法制备了Cu-3Ti-0.2Fe-1Sn合金,通过均匀化退火、固溶+冷轧(变形量分别为40%、60%、80%)+450 ℃时效处理,研究了形变热处理对Cu-3Ti-0.2Fe-1Sn合金显微组织、导电率及硬度的影响。结果表明:真空熔炼制得的 Cu-3Ti-0.2Fe-1Sn合金铸态组织中含有大量的枝状晶组织,经固溶处理后组织中出现了晶粒长大;铸态合金的硬度和导电率分别为178.1 HV和10.85%IACS,固溶处理后硬度和导电率都相应降低,分别为102.7 HV和4.58%IACS。经过冷变形和时效处理后Cu-3Ti-0.2Fe-1Sn合金硬度明显提高,变形量为60%时,时效480 min时硬度达到峰值,合金硬度为310.2 HV,此时合金的导电率为18.59%IACS。

关键词: Cu-Ti合金, 形变热处理, 显微组织, 硬度, 导电率

Abstract: Cu-3Ti-0.2Fe-1Sn alloy was prepared by the vacuum melting method. The alloy was treated by homogenization annealing, solution treatment, cold rolling(deformation of 40%, 60% and 80%, respectively) and aging at 450 ℃. The effect of thermo-mechanical on microstructure, conductivity and hardness of the alloy were investigated. The results show that microstructure of the as-cast Cu-3Ti-0.2Fe-1Sn alloy prepared by vacuum melting contains a large amount of dendritic microstructure, and grain growth occurs in the microstructure after solution treatment. The hardness and conductivity of the as-cast alloy are 178.1 HV and 10.85%IACS, respectively. After solution treatment, the hardness and conductivity of the alloy are reduced to 102.7 HV and 4.58%IACS, respectively. After cold deformation and aging treatment, the hardness is obviously improved. When the deformation is 60%, the hardness aging for 480 min reaches the peak value, the hardness and conductivity of the Cu-3Ti-0.2Fe-1Sn alloy are 310.2 HV and 18.59%IACS, respectively.

Key words: Cu-Ti alloy, thermo-mechanical heat treatment, microstructure, hardness, conductivity

中图分类号:

TG146.1

靖青秀, 孙玉晴, 肖翔鹏, 魏渺, 彭勇, 黄晓东. 形变热处理对Cu-Ti-Fe-Sn合金组织与性能的影响[J]. 金属热处理, 2022, 47(10): 24-30.

Jing Qingxiu, Sun Yuqing, Xiao Xiangpeng, Wei Miao, Peng Yong, Huang Xiaodong. Effect of thermo-mechanical heat treatment on microstructure and properties of Cu-Ti-Fe-Sn alloy[J]. Heat Treatment of Metals, 2022, 47(10): 24-30.

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形变热处理对Cu-Ti-Fe-Sn合金组织与性能的影响

Effect of thermo-mechanical heat treatment on microstructure and properties of Cu-Ti-Fe-Sn alloy

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