Brazing of 6061 aluminum alloy with the novel Al-Si-Ge-Zn filler metal
Brazing of 6061 aluminum alloy with the novel Al-Si-Ge-Zn filler metal
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DOI：
10.1016/j.matlet.2016.05.052
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发表时间：
2016-09-15
影响因子：
3
通讯作者：
Zhao, Xingke
中科院分区：
文献类型：
--
作者：
Niu, Zhiwei;Huang, Jihua;Zhao, Xingke
采用新型Al-Si-Ge-Zn钎料钎焊6061铝合金。研究了钎料和钎焊接头的组织和性能。结果表明：Al-Si-Ge-Zn钎料和钎焊焊缝中的主要相为α - al、β - gesi和α - zn相；与普通Al-Si-Ge和Al-Si-Zn钎料相比，该钎料具有更小、分散性更好的β - gesi固溶体相，无粗初生Si相。Al-Si-Ge-Zn钎料的熔化温度为505.2℃~ 545.1℃，较窄的熔化温度区间有利于钎焊工艺。用该钎料钎焊6061铝合金时，抗剪强度达到138.2 MPa。断口断面观察表明，钎焊接头呈现明显的韧性断裂特征。(C) 2016 Elsevier B.V.版权所有
The novel Al-Si-Ge-Zn filler metal was used for brazing 6061 aluminum alloy. Microstructure and properties of the filler metal and brazed joint were studied. The results showed that the main phases in the Al-Si-Ge-Zn filler metal as well as the brazed seam were alpha-Al, beta-GeSi, and eta-Zn phases. Compared with the common Al-Si-Ge and Al-Si-Zn filler metals, it had smaller and better dispersive beta-GeSi solid solution phases without coarse primary Si phase. The melting temperature of Al-Si-Ge-Zn filler metal is 505.2 similar to 545.1 degrees C, and the narrow melting temperature interval is favorable for the brazing process. When this filler metal was used to braze the 6061 aluminum alloy, an optimized shear strength of 138.2 MPa was achieved. Observation of the fracture section showed that the brazed joints presented obvious ductile fracture characteristics. (C) 2016 Elsevier B.V. All rights reserved.