高速鋼軋輥材料的高溫氧化行為和激光表面改性研究.pdf

1、東北大學(xué)碩士學(xué)位論文高速鋼軋輥材料的高溫氧化行為和激光表面改性研究姓名：佗勁紅申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：材料學(xué)指導(dǎo)教師：陳歲元?jiǎng)⒊Ｉ?0050101東北大學(xué)碩士學(xué)位論文ABSTRACTHighTemperatureOxidationandLaserSurfaceModificationofHighSpeedSteelforHotRollAbstractHigh—speedsteel(HSS)rollismainconsumedcompon

2、entinsteelrollingproduction，whichdirectlyinfluencesthesurfacequalityandcostofrolledmaterialsItplaysanimportantroleinsteelrollingproductionImprovingsurfacequalityofhigh—speedsteelrollmadreducingcostofproductionisaIlimport

3、antsubjectinthefieldofsteelrollingSo，itisveryvaluableinengineeringandtheorytostudysurfacestructureandperformanceofhi曲一speedsteelrollForresolvetheprobleminthestudyoftheHSS，thehightemperatureoxidationbehaviorofHSSforhotrol

4、lwassystematicallystudiedinair，watervaporand100％watervaporrespectively，madthelasertransformationhardnessexperimentwasalsoinvestigatedTheoxidescalemicroanalysisandthecompositionofthesampleswereinvestigatedbythescanningele

5、ctronmicroscopy(SEM)andX—raydiffraction(XRD)，theoxidationkineticsparametersoftheouterlayeroftherollerwasalsomeasuredbythehightemperaturethermobalanceandanalysedtheoxidationmechanismBytheanalysisofthephotograph，SEM，microh

6、ardnessinstrumentandsoon，thehardenedlayermicrostructure，hardnessandwearresistanceoftheHSSwerestudiedafterlasersurfacemodificationexperimentTheexperimentresultsshowthattheoxidationtemperatureoftheHSSplaysanimportantrolein

7、theoxidemorphologyandtheoxidationrateunderthethreedifferentconditionsFortheoxidationresistantoft11ealloyelementtheoxidationfirstlyoccurredatthesurfaceofthematrixandnucleatesatthematrixcarbideinterfaceTheoxidationproducto

8、ftheHSSisFe203intheaircondition，whiletheoxidationproductisFe203andFe304underthevaporandthe100％vaporconditionnlesamplehastheleastoxidationrateinthe100％watervapor，Theresultsshowthatthemicrostructureofthehardenedlayerwasver