Studies on Mechanical Properties, Fracture Morphology and Corrosion Behavior of Pulsed MIG Welded AZ31B Magnesium Alloy Sheets

Abstract:

AZ31B Magnesium alloy plates were successfully joined by using alternating current pulsed Metal inert gas welding (AC p-MIGW) with AZ61 Magnesium alloy wire as the filler metal. The macrostructure, tensile strength, micro hardness and corrosion rate of welded magnesium alloy joints were studied. Results showed that magnesium alloy plates could be successfully joined by pulsed MIG welding under specified process parameters. The average tensile strength of the joint was 81.34 N/mm2. The micro hardness was averagely about 67.62 HV. The joint was brittle fractured in the middle of weld zone. The corrosion rate of the welded joint was found to be 0.0112 mm/year.

• Periodical: Applied Mechanics and Materials (Volumes 813-814)
• Pages: 480-485
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.813-814.480
• Online since: November 2015
• Authors: Gurusamy Viswanathan, Pitchandi Kasiviswanathan, Muthukrishnan Nambi
• Keywords: AZ31B Mg Alloy, AZ61 Mg Alloy Wire, Corrosion Rate, F Racture Morphology, Microstructure, Pulsed MIG Welding

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