摘要
TIGweldingwasusedtodepositCo-8.8Al-9.8W-0.2Bsuperalloyon304austenitestainlesssteel.Theformfactorofweld,dilutionratio,microhardness,microstructureanddistributionofalloyingelementswereinvestigated.Themicrostructureofcladdinglayerwasmainlyhypoeutectic.Theprimaryphaseswerecobalt-richsolidsolution.Theeutecticphasewascomposedofcobalt-richsolidsolution,Co6W6CandCoCx.Whentheboroncontentincreasedfrom0.2%to0.5%,thedilutionratiodecreased,theprimaryphasebecamecoarseandthemicrohardnessdecreased.Whentheboroncontentwasfrom0.5%to2%,thedilutionratioandmicrohardnessincreasedobviously,buttheprimaryphasewasrefined.ThehardphaseofCo-8.8Al-9.8Wbecamerefinedandtheamountwasraised,andtheperformanceofcladdinglayerwasimprovedwithappropriateboronincrease.
出版日期
2017年04月14日（中国期刊网平台首次上网日期，不代表论文的发表时间）
