BAg45CuZn钎料硫化处理组织和性能演变特性

材料导报

2019, Vol. 33

Issue (z1): 425-427

金属与金属基复合材料

BAg45CuZn钎料硫化处理组织和性能演变特性

张冠星, 薛行雁, 龙伟民, 钟素娟, 孙华为, 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,郑州 450001

Evolution of Microstructure and Properties of BAg45CuZn Brazing Filler Metal During Vulcanization

ZHANG Guanxing, XUE Hangyan, LONG Weimin, ZHONG Sujuan, SUN Huawei, DONG Hongwei

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

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摘要采用扫描电镜、XRD等对硫化后的BAg45CuZn银基钎料的微观组织和性能进行研究。结果表明:随着硫化时间的延长,硫原子开始向钎料心部银、铜固溶体中扩散,虽然其微观组织形态仍然由两种物相组成,但在部分固溶体中发现硫元素。钎料硫化后物相组成有CuS、Cu₂S、ZnS、Ag₂S 和Ag₃CuS₂;伴随着硫化腐蚀时间的延长,钎料中硫含量不断增加,而钎料抗拉强度由未进行硫化腐蚀时的658 MPa下降到542 MPa,强度降低了17%左右;未经过硫化腐蚀的钎料拉伸断口形貌为典型的韧性断裂,宏观断口较粗糙,无金属光泽,在断裂前发生明显宏观塑性变形;随着硫化时间的延长,钎料由韧性断裂转变为脆性解理断裂,断口处含有大量的夹杂物。

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	张冠星
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	孙华为
	董宏伟

关键词: 银基钎料硫化处理微观组织

Abstract: The microstructure and properties of BAg45CuZn sulpherized was studied by means of scanning electron microscopy and XRD. The results showed that with the prolongation of vulcanization time, the sulfur atoms began to diffuse into the core of the brazing filler metal. Although the microstructure of the crucible still had two phase compositions, the presence of sulfur in some solid solutions was found. The phase composition of the brazing filler metal were CuS, Cu₂S, ZnS, Ag₂S and Ag₃CuS₂. With the prolongation of sulpherizing corrosion time, the sulphur content in the brazing filler metal increased continuously, and the tensile strength of the brazing filler metal decreased from 658 MPa to 542 MPa. The fracture morphology of the brazing filler metal without sulphide corrosion was typical ductile fracture, and the macroscopic fracture was rough with no metallic luster and obvious macroscopic plastic deformation before fracture. With the prolongation of vulcanization time, the fracture type of brazing filler metal changed from ductile fracture to brittle cleavage fracture, and the fracture contained a large amount of inclusions.

Key words: silver-based filler metals vulcanization microstructure

出版日期: 2019-05-25 发布日期: 2019-07-05

ZTFLH:

TG454

基金资助: 国家重点研发计划(2017YFB0305700)

作者简介: 张冠星,2015年6月获工学博士学位,其研究工作主要围绕国家重点发展的先进金属材料,重点从事新型钎焊材料及先进成形技术的研究工作。以第一作者在国内外学术期刊上发表论文20余篇,其中SCI、EI检索8篇;申请国家发明专利12项,其中授权10项。先后参与完成973、863、重大科技专项等科研项目11项、参编专著1部;获省部级科技进步一等奖3项、郑州市科技进步特等奖2项。 zgx_1983102@163.com

引用本文:

张冠星, 薛行雁, 龙伟民, 钟素娟, 孙华为, 董宏伟. BAg45CuZn钎料硫化处理组织和性能演变特性[J]. 材料导报, 2019, 33(z1): 425-427.
ZHANG Guanxing, XUE Hangyan, LONG Weimin, ZHONG Sujuan, SUN Huawei, DONG Hongwei. Evolution of Microstructure and Properties of BAg45CuZn Brazing Filler Metal During Vulcanization. Materials Reports, 2019, 33(z1): 425-427.

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http://www.mater-rep.com/CN/ 或 http://www.mater-rep.com/CN/Y2019/V33/Iz1/425

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