Phase analysis and corrosion behavior of brazing Cu/Al dissimilar metal joint with BAl88Si filler metal
To meet the requirements of automatic production, a new type of green BAl88Si cored solder was developed. The lap brazing experiments were carried out with copper and aluminum as brazing substrates. The microstructure, phase composition, and corrosion behavior of solder joint interface were studied...
Guardado en:
| Autores principales: | , , , , , , , , , , , |
|---|---|
| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
De Gruyter
2021
|
| Materias: | |
| Acceso en línea: | https://doaj.org/article/a0abc9f83669428591d502396bfde76e |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| id |
oai:doaj.org-article:a0abc9f83669428591d502396bfde76e |
|---|---|
| record_format |
dspace |
| spelling |
oai:doaj.org-article:a0abc9f83669428591d502396bfde76e2021-12-05T14:10:58ZPhase analysis and corrosion behavior of brazing Cu/Al dissimilar metal joint with BAl88Si filler metal2191-909710.1515/ntrev-2021-0081https://doaj.org/article/a0abc9f83669428591d502396bfde76e2021-09-01T00:00:00Zhttps://doi.org/10.1515/ntrev-2021-0081https://doaj.org/toc/2191-9097To meet the requirements of automatic production, a new type of green BAl88Si cored solder was developed. The lap brazing experiments were carried out with copper and aluminum as brazing substrates. The microstructure, phase composition, and corrosion behavior of solder joint interface were studied by field emission scanning electron microscopy, energy dispersive spectroscopy, transmission electron microscopy, electron backscattering diffraction, tensile testing machine, and electrochemical workstation. The results show that the brazing joint of Cu/BAl88Si/Al is metallurgical bonding, and the brazing joint of Cu/BAl88Si/Al is composed of Cu9Al4, CuAl2, a-Al, (CuAl2 + a-Al + Si) ternary eutectic. In addition, there is no obvious preference for each grain in the brazing joint, and there are S texture {123}<634>, Copper texture {112}<111>, and Brass texture {110}<112>. The interface of Cu9Al4/CuAl2 is a non-coherent crystal plane and does not have good lattice matching. The average particle size of CuAl2 is 11.95 µm and that of Al is 28.3 µm. However, the kernel average misorientation (KAM) value at the brazed joint interface is obviously higher than that at the brazed joint interface copper, so the defect density at the brazed joint interface aluminum is higher than that at the brazed joint interface copper. At the same time, due to poor corrosion resistance at the interface on the aluminum side of the brazed joint, serious corrosion spots and corrosion cracks occur at the same time, which leads to the shear performance of the brazed joint decreasing by about 75% after salt spray test for 240 h.Yu HuaZhang LiangliangLi ShuaiCai FangfangLi YunpengShi YinkaiZhong SujuanMa JiaJiu YongtaoLong WeiminDong HonggangWei ShizhongDe Gruyterarticleflux filler metalimclattice mismatchpreferential orientationkamcorrosion behaviorTechnologyTChemical technologyTP1-1185Physical and theoretical chemistryQD450-801ENNanotechnology Reviews, Vol 10, Iss 1, Pp 1318-1328 (2021) |
| institution |
DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
flux filler metal imc lattice mismatch preferential orientation kam corrosion behavior Technology T Chemical technology TP1-1185 Physical and theoretical chemistry QD450-801 |
| spellingShingle |
flux filler metal imc lattice mismatch preferential orientation kam corrosion behavior Technology T Chemical technology TP1-1185 Physical and theoretical chemistry QD450-801 Yu Hua Zhang Liangliang Li Shuai Cai Fangfang Li Yunpeng Shi Yinkai Zhong Sujuan Ma Jia Jiu Yongtao Long Weimin Dong Honggang Wei Shizhong Phase analysis and corrosion behavior of brazing Cu/Al dissimilar metal joint with BAl88Si filler metal |
| description |
To meet the requirements of automatic production, a new type of green BAl88Si cored solder was developed. The lap brazing experiments were carried out with copper and aluminum as brazing substrates. The microstructure, phase composition, and corrosion behavior of solder joint interface were studied by field emission scanning electron microscopy, energy dispersive spectroscopy, transmission electron microscopy, electron backscattering diffraction, tensile testing machine, and electrochemical workstation. The results show that the brazing joint of Cu/BAl88Si/Al is metallurgical bonding, and the brazing joint of Cu/BAl88Si/Al is composed of Cu9Al4, CuAl2, a-Al, (CuAl2 + a-Al + Si) ternary eutectic. In addition, there is no obvious preference for each grain in the brazing joint, and there are S texture {123}<634>, Copper texture {112}<111>, and Brass texture {110}<112>. The interface of Cu9Al4/CuAl2 is a non-coherent crystal plane and does not have good lattice matching. The average particle size of CuAl2 is 11.95 µm and that of Al is 28.3 µm. However, the kernel average misorientation (KAM) value at the brazed joint interface is obviously higher than that at the brazed joint interface copper, so the defect density at the brazed joint interface aluminum is higher than that at the brazed joint interface copper. At the same time, due to poor corrosion resistance at the interface on the aluminum side of the brazed joint, serious corrosion spots and corrosion cracks occur at the same time, which leads to the shear performance of the brazed joint decreasing by about 75% after salt spray test for 240 h. |
| format |
article |
| author |
Yu Hua Zhang Liangliang Li Shuai Cai Fangfang Li Yunpeng Shi Yinkai Zhong Sujuan Ma Jia Jiu Yongtao Long Weimin Dong Honggang Wei Shizhong |
| author_facet |
Yu Hua Zhang Liangliang Li Shuai Cai Fangfang Li Yunpeng Shi Yinkai Zhong Sujuan Ma Jia Jiu Yongtao Long Weimin Dong Honggang Wei Shizhong |
| author_sort |
Yu Hua |
| title |
Phase analysis and corrosion behavior of brazing Cu/Al dissimilar metal joint with BAl88Si filler metal |
| title_short |
Phase analysis and corrosion behavior of brazing Cu/Al dissimilar metal joint with BAl88Si filler metal |
| title_full |
Phase analysis and corrosion behavior of brazing Cu/Al dissimilar metal joint with BAl88Si filler metal |
| title_fullStr |
Phase analysis and corrosion behavior of brazing Cu/Al dissimilar metal joint with BAl88Si filler metal |
| title_full_unstemmed |
Phase analysis and corrosion behavior of brazing Cu/Al dissimilar metal joint with BAl88Si filler metal |
| title_sort |
phase analysis and corrosion behavior of brazing cu/al dissimilar metal joint with bal88si filler metal |
| publisher |
De Gruyter |
| publishDate |
2021 |
| url |
https://doaj.org/article/a0abc9f83669428591d502396bfde76e |
| work_keys_str_mv |
AT yuhua phaseanalysisandcorrosionbehaviorofbrazingcualdissimilarmetaljointwithbal88sifillermetal AT zhangliangliang phaseanalysisandcorrosionbehaviorofbrazingcualdissimilarmetaljointwithbal88sifillermetal AT lishuai phaseanalysisandcorrosionbehaviorofbrazingcualdissimilarmetaljointwithbal88sifillermetal AT caifangfang phaseanalysisandcorrosionbehaviorofbrazingcualdissimilarmetaljointwithbal88sifillermetal AT liyunpeng phaseanalysisandcorrosionbehaviorofbrazingcualdissimilarmetaljointwithbal88sifillermetal AT shiyinkai phaseanalysisandcorrosionbehaviorofbrazingcualdissimilarmetaljointwithbal88sifillermetal AT zhongsujuan phaseanalysisandcorrosionbehaviorofbrazingcualdissimilarmetaljointwithbal88sifillermetal AT majia phaseanalysisandcorrosionbehaviorofbrazingcualdissimilarmetaljointwithbal88sifillermetal AT jiuyongtao phaseanalysisandcorrosionbehaviorofbrazingcualdissimilarmetaljointwithbal88sifillermetal AT longweimin phaseanalysisandcorrosionbehaviorofbrazingcualdissimilarmetaljointwithbal88sifillermetal AT donghonggang phaseanalysisandcorrosionbehaviorofbrazingcualdissimilarmetaljointwithbal88sifillermetal AT weishizhong phaseanalysisandcorrosionbehaviorofbrazingcualdissimilarmetaljointwithbal88sifillermetal |
| _version_ |
1718371558577143808 |