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探讨了用钨极氩弧焊焊接铝合金ＬＹ１２ＣＺ及ＬＹ１２Ｍ薄板时其热裂纹的变化规律，并分析了焊接工艺参数及填充材料对热裂纹的影响。试验结果表明，选择合适的工艺参数和填充材料可以明显提高该类合金的抗裂性能。
The variation rules of hot cracks in the welding of aluminum alloy LY12CZ and LY12M by TIG welding are discussed. The welding parameters and the influence of filler on the hot cracking are analyzed. The test results show that the selection of appropriate process parameters and filler materials can significantly improve the anti-cracking performance of this type of alloy.