Solidification cracking is a serious weld defect in welding Al alloys. A new test method has been developed and used to evaluate solidification cracking susceptibility of Al alloys. The test method was used with both gas tungsten arc welding (without filler metal) and gas metal arc welding (with filler metal) to make lap welds. The test results of wrought Al alloys showed that the susceptibility to solidification cracking increased in the order of 2219 Al, 2014 Al, 2024 Al, 7075 Al, and 6061 Al; that is consistent with the literature.
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