2023，Vol.37，No.13www．mater-rep．com21010106-1基金项目:云南省稀贵金属材料基因工程(一期2020)(202002AB080001-4)ThisworkwasfinanciallysupportedbytheGeneticEngineeringofＲareMetalMaterialsinYunnanProvince(PhaseI2020)(202002AB080001-4)．limengnie@163．comDOI:10.11896/cldb.210101067系铝合金焊接技术的研究现状及展望陈轩，李萌蘖，卜恒勇，左汉宁昆明理工大学材料科学与工程学院，昆明650093本文主要对7系列铝合金焊接技术的现状进行总结和展望。当前7系铝合金的主要焊接工艺有电弧焊接、搅拌摩擦焊接、激光焊接以及复合焊接。电弧焊接主要分为钨极气体保护(TIG)焊、熔化极惰性气体保护(MIG)焊和冷金属过渡(CMT)焊接技术。7系铝合金采用CMT焊接工艺得到的焊缝美观，性能好。焊丝选择上，为避免焊缝中合金元素的烧损及裂纹敏感区，通常选用5系的铝镁焊丝。搅拌摩擦焊接是当前工程生产中铝合金焊接时采用最多的焊接方法，但不适用于形状复杂的焊接接头。激光焊接近年来通过发展已经在工业上得到推广及应用。未来7系铝合金焊接的研究方向是通过复合焊接工艺、开发新型焊丝、双丝焊接等方法来扩大其在工程上的使用范围。关键词铝合金焊接电弧焊接搅拌摩擦焊接激光焊接复合焊接中图分类号:TG457文献标识码:AＲesearchStatusandProgressontheWeldingTechnologiesof7XXXSeriesAluminumAlloyCHENXuan，LIMengnieVictor，BUHengyong，ZUOHanningFacultyofMaterialsScienceandEngineering，KunmingUniversityofScienceandTechnology，Kunming650093，ChinaInthispaper，currentsituationofweldingtechnologiesofthe7XXXseriesaluminumalloysaresummarizedandprospected．Currently，prima-ryweldingprocessesthatuse7XXXseriesaluminumalloysincludearcwelding，frictionstirwelding，laserwelding，andhybridwelding．Arcweldingconsistsofthreeparts:tungsteninertgasarcwelding，metalinertiagaswelding，andcoldmetaltransferwelding．Theweldingofalumi-numusinganaluminumalloyresultsinwell-craftedandhighlyefficientproducts．The5-seriesweldingwirescaneffectivelypreventheatlossandtheoccurrenceofcrack-sensitiveregions．Frictionstirweldingisthemostwidelyusedaluminumalloyweldingmethodinmanufacturingprocesses．However，itisnotsuitableforweldingjointswithcomplexshapes．Laserweldinghasrecentlybeenintroducedin...
