Mechanical properties of 422 stainless steel

《Mechanical properties of 422 stainless steel》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、Mechanicalpropertiesof422stainlesssteelrepairedviawirefeedlaserweldingT.C.Yang,J.C.LinandC.ChencharacterisedbyashortinteractiontimewithintenseenergyLaserweldingwithllerwireadditionscouldbeusedindensity.Asaresult,theprocesshasalowheatinputandrestorationofcomponentsth

2、atareofhighcostorcauseslessdistortionoftheweldmentthanconventionalsometimesdifculttoprocure,suchassteamturbineweldingprocesses.Laserrepairofhighcostcomponentsbladesinfossilfuelpowerplants.Inthepresentwork,suchassteamturbinebladesisbecomingattractiveasan3machinedVgro

3、ovespecimenswereemployedtoalternativetoreplacement.Ernstetal.reportedthesimulatelaserrepairofCarpenter636stainlesssteelpossibilityofrepairingcracksindiesvialaserwelding4(SS),whichhasasimilarcompositiontoabladeandSunetal.demonstratedcrackrepairofahotworkedmaterial,ty

4、pe422SS.Beforerepairwelding,aheattoolsteelvialasermeltprocessing.Theuseofllerwirewastreatmentprocedureincludingsolutionandtemperproposedoriginallytoovercomepoortupproblemsin56treatmentsofthespecimenswascarriedoutaccordinglaserwelding.Arecentstudyindicatedthatthestri

5、ngenttothemechanicalandmicrostructuralanalysesofatuprequirementsforlaserweldingcanberelaxedsome-usedbladeafter20yearsserviceatabout540°C.whatusingllerwireadditions.However,theadditionofTensile,impact,andfatiguecrackgrowthtestsofweldllermetalisnecessaryforrepairappli

6、cationstorebuildtherepairsusing410SSllerwirewereconducted.Thedamagedcomponenttoitsoriginaldimensions.Inweldweldrepairsexhibitedanimpacttoughnesssimilartorepairs,mechanicalpropertiesofthebuiltupdepositarethatofthebasemetalandalowerfatiguecrackgrowthimportantbecauseth

7、ellermetalisrequiredtoreplaceratethanthebasemetal.However,thelowerhardnesssomeoftheoriginalpartthathasbeenremovedbyassociatedwith410SSllermetalledtotensilemachining.Ductilellermetalsareoftenutilisedforrepairfractureintheweldmetalofrepairedspecimens.weldingtominimise

8、thestrainimposedonthehardenedAccordingly,theuseof410SSllermetalforrepairheataffectedzone(HAZ)andtocompensateforweldmetal7weldingtype422SSc