退火时间对BAg45CuZn钎料组织和性能的影响

doi:10.13251/j.issn.0254-6051.2020.02.035

金属热处理 ›› 2020, Vol. 45 ›› Issue (2): 186-188.DOI: 10.13251/j.issn.0254-6051.2020.02.035

退火时间对BAg45CuZn钎料组织和性能的影响

张冠星, 薛行雁, 孙华为, 黄俊兰, 董宏伟

郑州机械研究所有限公司新型钎焊材料与技术国家重点实验室, 河南郑州 450001

收稿日期:2019-08-11 出版日期:2020-02-25 发布日期:2020-04-03
作者简介:张冠星(1983—),女,工程师,博士,主要从事钎焊材料与技术相关研究工作,发表论文30余篇,E-mail:zgx_1983102@163com。
基金资助:
国家重点研发计划(2017YFB0305700)

Effect of annealing time on microstructure and properties of BAg45CuZn brazing filler metal

Zhang Guanxing, Xue Hangyan, Sun Huawei, Huang Junlan, Dong Hongwei

State Key Laboratory of Advanced Brazing Filler Metals & Technology, Zhengzhou Research Institute of Mechanical Engineering, Zhengzhou Henan 450001, China

Received:2019-08-11 Online:2020-02-25 Published:2020-04-03

摘要/Abstract

摘要：

以制冷、工具等行业常用钎料BAg45CuZn为对象,分析了退火时间对其组织和性能的影响。结果表明:BAg45CuZn钎料合金主要相组成为Cu(铜固溶体)、Ag(银固溶体)、Ag-Zn、Cu-Zn化合物;在580 ℃保温不同时间,钎料的组成相并未发生变化,而各相的比例和形态发生部分改变;其中以共晶组织尤为明显,随着保温时间的延长,其由细小的共晶组织转变为粗大的共晶组织;共晶组织中Cu-Zn、Ag-Zn化合物的硬度较高,致使整个基体的显微硬度明显提高,脆性增大,钎料加工性能变差;580 ℃保温不同时间钎料流铺性和接头强度均发生明显变化,对钎焊工艺性造成较大影响。

关键词: 银基钎料, 退火时间, 钎焊性能, 组织

Abstract:

Influence of annealing time on the microstructure and properties of the brazing filler metal BAg45CuZn commonly used in refrigeration and tools industries was analyzed. The results show that the main phases of BAg45CuZn alloy are Cu solid solution, Ag solid solution, Ag-Zn and Cu-Zn compounds. Annealing at 580 ℃ for different time, the main phases of the BAg45CuZn alloy keep unchanged, while the proportion and morphology of each phase are changed, especially the eutectic structure which changes from fine to coarse with the prolongation of holding time. The hardness of Cu-Zn and Ag-Zn compounds in the eutectic structure is higher, which leads to the increase of microhardness and brittleness, as well as poorer processability of the whole matrix. The flowability and the tensile strength of the filler metal annealed at 580 ℃ for different annealing time have significant changes.

Key words: silver-based filler metals, annealing time, brazing properties, microstructure

中图分类号:

TG156.2

张冠星, 薛行雁, 孙华为, 黄俊兰, 董宏伟. 退火时间对BAg45CuZn钎料组织和性能的影响[J]. 金属热处理, 2020, 45(2): 186-188.

Zhang Guanxing, Xue Hangyan, Sun Huawei, Huang Junlan, Dong Hongwei. Effect of annealing time on microstructure and properties of BAg45CuZn brazing filler metal[J]. HTM, 2020, 45(2): 186-188.

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退火时间对BAg45CuZn钎料组织和性能的影响

Effect of annealing time on microstructure and properties of BAg45CuZn brazing filler metal

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