综述了近年来国内外针对压铸镁合金焊接气孔问题的研究现状及发展趋势,主要包括压铸镁合金焊接气孔的气体来源、形成机制、影响因素及防治措施4个方面.通过综合分析,认为母材中高的原始含气量是影响压铸镁合金焊接气孔倾向的主要因素.由于压铸镁合金原始含气量高,传统的防治焊接气孔产生的措施起到的作用都十分有限,采用冶金措施可能是解决压铸镁合金焊接气孔问题的有效方法.
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