中碳硼鋼的奧氏體晶粒度、析出相及組織研究.pdf

1、西安建筑科技大學(xué)碩士學(xué)位論文中碳硼鋼的奧氏體晶粒度、析出相及組織研究姓名：宋紅申請學(xué)位級別：碩士專業(yè)：材料加工工程指導(dǎo)教師：趙西成2002.4.1西安建筑科技大學(xué)碩士學(xué)位論文StudyonAusteniteGrainSize，PrecipitationPhaseandMicrostructureofMediumcarbonBoronSteelSpeciality：MaterialsProcessingEngineeringPostgra

2、duate：SongHongInstructor：ProfZhaoXichengAbstractnleinfluencesof“13contentandpreheattreatmentOiltheaustenitegrinsizeprecipitationphaseandmicrosWactureofthes劬dicdmediumcarbonboronsteelWeI“estudiedbymearl$ofopticalmicroscop

3、eelectronmicroscopeenel茗yspeclrometercarbone)m孤瞄0nreplicas曲ermo‘掃撇icalanalysisandcalculationItwasshownthattheeffectivelitltlliumisthemainparameterforcon伽ollingtheaustenitegramsizeofthesteelWhentheeffec(ivetitaniumcontent

4、isnla儻thano032P／btheaustenitepropergrinsizeofthesteelisover7grade；Thepreheattreatmente&tlrefinetheaust觚te礎(chǔ)sizeofthesteelAftersolutionqueachingat1250“(205LtheaustenitepropergrinsizeisaV髓9gade；n磚precipitationphaseofthestee

5、lis砸Cwhichhas8fccs蚋lctI鼗n蛇umountsizeanddistributionisthemechanismhow啊contentandprelleattmatrncTltaffectaustenite礎(chǔ)sizeofthesteelThenonmlizingndaDsInK慨ofthesteelearlberefm咄andthenetworkofprocutectoidfearitecallreduceafbefs

6、olutionqmnchingThemorphologyofmartensiteofthesteelistheshapeofI甜Landlhereexistfilmsofremainedaustenitebcw∞nlathesThedislocation吼吐喀扛ucnl麟andtwincrystal飄】bsInJc電lrBsinmanensitelathesarefoundKeyWbrfls：meAimnearbonboronsteel