搜索
T91,(国家电力公司电力建设研究所,北京102401):,T91,:T91;;:TG142:A:025426051(2000)1120006203EffectofHeatTreatmentonMicrostructureandHardnessofT91SteelWANGRan,HEMing2xian(StatePowerCorporationofChinaEPCRI,Beijing102401,China)Abstract:ThedifferentzonesaffectedbyweldthermalcycleduringtheweldingprocessofT91steelhavebeensimulatedbymeansofchangingthetemperatureofheattreatment.Metallurgicalsturctureandmicrohardnesshavebeenanalysedandcomparedindifferentheataffectedzones.Keywords:T91steel;metallurgicalstructure;microhardness1引言,70,(),:T22/P22HT7(9Cr21Mo)X20CrMoV121(F12)X20CrMoWV121(F11);80,CE600MW300MW,T91/P91TP304HTP347H[1],,P22(10CrMo910),,,,,F12(F11),,,TP304HTP347H,,T91/P91,650e,F12(F11)9Cr21MoT22/P22TP304H,1[2,3],T91/P91X20CrMoV121(F12)TP304HT22/P22[4]1T91/P91/e300~700T91/P919Cr21Mo2125Cr21Mo,550e2530~620T91/P91F12550T91/P91TP304H550~620T91/P91TP304H620,T91/P91TP304HT91/P91,T91,,,2T91()w(%)CSPMnCrMoSiVNNbNiAl0109801004010160144818201880136012201043010850107201005::(1961)),,,,1:(010)8935115025289:20002052242试验材料及方法21142mm@5mmT912,(CCT)1T91,T91(0106%~0112%C)(10%),1T91/P91(CCT)A+C:+F+C:+M:Ms:Mf:,,50%C*:MX=(V,Nb)(C,N):1040e,20min656200011212RJX24213,,,NEOPHOT221,HX21000CCT,,1600e[5],,(HAZ),2,1200e,;(A)A,T91;A,A,,,ASEMA213289,T91/P91,,,()(+)3230111250e@15min,121250e@15min,+760e@60min,211050e@15min,221050e@15min,+760e@60min,31850e@15min,32850e@15min,+750e@60min,3试验结果与分析3~63T91,4a,1250e,,,377HV012;4b,4b,,,,,1/3252HV0125a,1050e,,();5b,,406HV012213HV0126a,,,,+;6b,4结论(1)T91,,T91,,,3@500:233HV0114@400(a)1250e@15min:377HV012(b)1250e@15min+760e@60min:252HV0127562000115@500(a)1050e@15min:406HV012(b)1050e@15min+760e@60min:213HV0126@500(a)850e@15min:267HV012(b)850e@15min+760e@60min:214HV012+,(2):,,(3)ASME([250HB);760e@60min,400HVASEMSA2213:[1],.[J].,1994,(1):52260.[2],.T91/P91[J].,1996,(1):15222.[3].P91[J].,1996,(7):329.[4],.T91[J].,1997,(2):33237.[5].[M].:,1980,7.CCT,,(包头钢铁学院材料系,包头014010):Gleeble2150015%CrCCT,CCT,,CCT;,,:;;CCT;:TG164:A:025426051(2000)1120008203EffectofRareEarthElementsonCCTDiagramandStructuresandPropertiesofHighChromiumWhiteCastIronZHANGYang2huan,WANGGui,LIUZong2chang(DepartmentofScienceandEngineeringofMaterials,BaotouUniversityofIronandSteelTechnology,Baotou014010,China)Abstract:TheCCTdiagramsofhighchromiumwhitecastironcontaining15%CrweremeasuredviaGleeble21500,theeffectsofminutequantityREelementsonCCTdiagramandstructuresandpropertiesofhighchromiumwhitecastironwereresearched.Theex2perimentalresultsshowedthat,whensuitablequantityREelementswasadded,thestabilityofsupercooledaustenitewasincreased,theCCTdiagramswereshiftedtoright,thepatternanddistributionofeutecticcarbidewereimprovedappreciably,thestructureofmatrixwasfinedremarkably,theimpacttoughnessofhighchromiumwhitecastironincaststateandheattreatmentstatewereenhancedsig2nificantly.Keywords:rareearthelemens;highchromiumwhitecastiron;CCTdiagram;structureandproperty856200011