Local Fatigue Properties of Al-Zn-Mg Alloy Welded Joint

Abstract:

Local tensile properties and fatigue properties of Al-Zn-Mg alloy welded joint were investigated. Experiment results show that A7N01 aluminium alloy welded joint is highly inhomogenous both in microstructure and mechanical performances. Ultimate tensile strength and yield strength of base metal are superior compared to HAZ and weld metal. U-shape notched specimens were used in fatigue tests to study local fatigue properties of the joint. Fatigue tests results demonstrate that the difference of local fatigue life is conspicuous in the three regions. The difference of yield strength is believed to result from the diversity of fatigue life for each region in A7N01 aluminium alloy welded joint.

• Periodical: Advanced Materials Research (Volumes 468-471)
• Pages: 2010-2013
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.468-471.2010
• Online since: February 2012
• Authors: Liang Zhang, Xue Song Liu, Lin Sen Wang, Zi Qi Ma, Hong Yuan Fang
• Keywords: Aluminium Alloy, Local Fatigue Property, Welding

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