Surface-activation assisted brazing of Al-Zn-Mg-Cu alloy: Improvement in microstructure and mechanical properties

被引：13

作者：

Hu, S. P. ^{[1
,2
]}

Niu, C. N. ^{[1
,2
]}

Bian, H. ^{[1
,2
]}

Song, X. G. ^{[1
,2
]}

Cao, J. ^{[1
]}

Tang, D. Y. ^{[1
,2
]}

机构：

[1] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Heilongjiang, Peoples R China

[2] Harbin Inst Technol Weihai, Shandong Prov Key Lab Special Welding Technol, Weihai 264209, Peoples R China

来源：

MATERIALS LETTERS | 2018年 / 218卷

基金：

对外科技合作项目（国际科技项目）; 中国国家自然科学基金;

关键词：

Sputtering; Diffusion; Microstructure; Surfaces; Welding; ALUMINUM-ALLOY; DIFFUSION;

D O I：

10.1016/j.matlet.2018.01.153

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The surface oxide film has adverse effect on the brazing of aluminum alloy. In this work, the novel method of surface activation was proposed to remove the surface oxide film of aluminum alloy and promote the atomic diffusion, which improved the microstructure and mechanical properties of brazed joints. Through surface activation process, the surface oxide film was eliminated effectively. The content of grain boundary and the surface dislocation density of the aluminum alloy were increased. The atomic diffusion in brazed joints with surface activation was observed evidently and residual oxide film was removed. The microstructure and shear strength of brazed joint were improved by surface activation, which formed the sound brazed joints. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：86 / 89

页数：4

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