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《Effect of Surface Work Hardening on Wear Behavior of Hadfield Steel》由會員上傳分享，免費在線閱讀，更多相關內(nèi)容在學術論文-天天文庫。
1、MaterialsScienceandEngineeringA460461(2007)542549EffectofsurfaceworkhardeningonwearbehaviorofHad?eldsteelWeilinYana,?,LiangFanga,KunSuna,YunhuaXubaStateKeyLaboratoryforMechanicalBehaviorofMaterials,XianJiaotongUniversity,Xian710049,PeoplesRepublicofChinabInstituteofWearResistanceMaterials,XianUniver
2、sityofArchitecture&Technology,Xian710055,PeoplesRepublicofChinaReceived27October2006;receivedinrevisedform19January2007;accepted22February2007AbstractShotpeeninghasbecomeaneffectivemethodtostrengthenalloy.Inthisinvestigation,ithasbeenusedtowork-hardenHad?eldsteel.Ithasbeenregardedthatthesurfacehardn
3、essofHad?eldsteelhasbeenincreasedgreatlyaftershotpeening.Usingelectronscanningmicroscope(SEM),highresolutiontransmissionelectronmicroscope(HRTEM)andX-raydiffraction(XRD)analysis,themicrostructureofshotpennedsurfacelayerwasexamined.Ithasbeenobservedthatananocrystallinesurfacelayerisformed.Thegrainsiz
4、esofsurfaceweredecreasedto11.117.4nmandthemaximumhardenedlayercanreachto100mafterthetreatment.Surfacehardnesswasalsoincreasedwithincreasingshotpeeningperiod.Two-bodyandthree-bodyabrasivewearexperimentswerecarriedoutforworkhardeningandoriginalspecimens,separately.Theresultsshowedthatthethree-bodywea
5、rresistanceofthenanocrystallizedHad?eldsteelhasdistinctlybeenimprovedusingsoftabrasiveparticles.Forharderabrasiveparticleslikeemerypaper,theincreasedhardnessandgrainre?nementbyshotpeeningcannotimprovetwo-bodyabrasivewearresistance.?2007ElsevierB.V.Allrightsreserved.Keywords:Had?eldsteel;Workhardenin
6、g;Nanocrystalline;Hardness;Abrasivewear1.IntroductiontracksbyLojkowskietal.[13].Thoseworksarequiteinterestingandvaluable.Nanostructuredmaterials,withtheconsiderablereducedIsitpossibletouseworkhardeningtoincreasethewearresis-grainsizeandsigni?cantvolumefractionsofgrainboundaries,tanceofsteel?Khruscho
7、vandRichardson[1417]reportedthathaveexhibitedsuperiormechanicalpropertiescomparedtotheirincreasingthehardnessofmetalsbyworkhardeninghaslittlecoarsegraintypes.Forinstance,theypossesshighstrengthandeffe
