ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Brazing of Al to Cu using Al-Si-Mg-Bi brazing alloy has been carried out in a vacuumfurnace. In the brazed interlayer, there were two kinds of intermetallic compounds. One of these[removed info]intermetallic compounds was θ phase and the other was δ(Cu3Al2). Tensile strength of the joint wasonly about 15MPa. Deformation behavior of Al/Cu brazing joint was brittle without deformation ofthe base metal. The specimen was fractured in the intermetallic compound which was mainly θphase. In order to improve the tensile strength of Al/Cu dissimilar joint, Cu cladding Ag (thickness:0.1mm) substituted for Cu. As the result, tensile strength of the joint was about 70MPa and thespecimen was fractured in an Al base metal. In this joint, plate-like intermetallic compound, δ(Ag2Al) was formed in the brazed interlayer. The shape of δ(Ag2Al) was quite different from θphase found in Al/Cu joint. It was considered that the shape of reaction layer remarkably affectedto the strength of the Al/Ag-Cu clad dissimilar joint
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.4075.pdf
