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Indexed by:期刊论文

Date of Publication:2012-08-01

Journal:MATERIALS & DESIGN

Included Journals:SCIE、EI

Volume:39

Page Number:14-19

ISSN No.:0261-3069

Key Words:Non-ferros metals and alloys; Brazing and soldering; Microstructure

Abstract:In this article, a series of Sn-xZn solders are designed for joining Mg/Al dissimilar metals by low temperature brazing. The effect of Zn content in Sn-Zn solders on microstructure evolution and mechanical properties of the different brazed joints are investigated. The experimental results indicate that Sn-30Zn alloy is identified as the optimized solder. Al-Sn-Zn solid solutions form and disperse in the brazing zone of the Mg/Sn-30Zn/Al brazed joint, decreasing the risk of embrittlement of the brazed joint. The average shear strength of Mg/Sn-30Zn/Al brazed joint can reach 70.73 MPa. The joint fractures in the coarse blocky Mg2Sn intermetallic phases in the center of the brazing zone. (C) 2012 Elsevier Ltd. All rights reserved.