高强钢焊接工艺及接头组织与性能研究摘要高强钢具有高强度、高韧性的优点，被广泛用在液压支架、汽车车壳上。本文从焊接工艺、焊接接头组织、力学性能等特点对国内外高强钢焊接方面的研究成果进行了综述，得出高强钢焊接接头各个区域的组织与性能不同，在不同焊接规范下相同区域的金相组织基本相似，熔合区因组织不均匀为最薄弱环节，指出防止高强钢热影响区的脆性破坏以及提高钢的韧性是今后高强钢焊接研究的重点。关键词：高强钢，焊接工艺，组织，力学性能IStudyonWeldingProcessandMicrostructureandPropertyofHighStrengthSteelAbstractHighstrengthsteelwithhighstrength,hightoughnessadvantages,arewidelyusedinhydraulicsupport,carshell.Fromaspectsofweldingprocess,jointmicrostructureandmechanicalpropertiesofhighstrengthsteelwelding,theresearchresultsofthehighstrengthsteelweldingathomeandabroadweresummarized.Itindicatesthatthemicrostructureandmechanicalpropertiesofhighstrengthsteelweldjointsaredifferentindifferentregions,whilethemetallographicstructuresofthesameregionarebasicallysimilarunderdifferentweldingparameters,thefusionzoneistheweakestareaduetotheinhomogeneousmicrostructure.Itispointedoutthattopreventtheheataffectedzone(HAZ)frombrittlefailureandtoimprovethetoughnessoftheHAZarethefocusoffutureresearchonhighstrengthsteelwelding．Keywords：Highstrengthsteel,Weldingprocess,organization,MechanicalpropertiesII目录摘要.................................................................................................................................................IAbstract............................................................................................................................................II前言................................................................................................................................................11.高强钢的发展状况.....................................................................................................................21.1高强钢的生产与发展.......................................................................................................21.2高强钢的性能与分类.......................................................................................................21.3高强钢的应用前景...........................................................................................................52.高强钢焊接研究现状.................................................................................................................62.1激光焊接...........................................................................................................................62.2气体保护焊.......................................................................................................................72.3电阻点焊...........................................................................................................................73.高强钢焊接工艺.........................................................................................................................84.高强钢焊接接头组织与性能研究.............................................................................................94.1焊接接头组织分析...........................................................................................................94.2焊接接头力学性能分析.................................................................................................105.结语.........................
