3.5Ni钢的热成形工艺试验研究

315NiInvestigationsontheHotFormingProcedureof315NiSteelThemechanicalpropertiesoftwobrand315Nisteelplatesweretestedafterthesimulatedheatingforhotforming,andtheheattreatmentexperimentsofnormalizingplustemperingafterthesimulatedheatingwerealsocarriedout.Theresultsshowthatthelowtemperaturetoughnessofthesteelplatesisgreatlyweakenedbythehotformingprocess.Itisnecessaryfornormalizingplustemperingtorecoverthelowtemperaturetoughnesseffectivelyafterhotforming.:315Ni1315Ni-80-101,,,,,(),,,,,315Ni,,()315Ni,315Ni11,2,,24mm,ASTMA203E,315%Ni,;,ASTMA203E,18mm,SLT3N28,11(%)CSiMnSPNiMoTiVRsMPaRbMPaD5%AKV-101J315%Ni0112012301510101001014317001123675023438SLT3N2801070125016501001010033152011237251536228ASTM011701150130017001025010253125317527548161822272SLT3N28Rs(MPa)Rb(MPa)D5(%)AKV-101(J)AS44154238253189(228)235HF9501000ö20min4545763699(9)9HF+N1+860ö40min396587372015(17)17HF+N1T22+860ö40min+T22412552383670(62)80HF+N1T25+860ö40min+T2538955039195145(157)130HF+N1T95+860ö40min+T9539458238168152(197)270HF+N2+840ö40min361568332837(28)19HF+N2T15+840ö40min+T1539353538213198(197)179HF+N2T95+840ö40min+T9539052239279175(221)210HF+QT15+840ö40min+T1547560933238273(260)268:3,,,21315Ni,,23,AKV101123315%NiRs(MPa)Rb(MPa)D5(%)AKV-80(J)AKV-101(J)AS3885053116080(114)1023630(37)44HF9501000ö20min4035363273110(110)1485623(32)16HF+N1+870ö40min39152730155148(143)1259489(85)72HF+N1T22+870ö40min+T2240250733197183(190)190141152(151)160HF+N1T92+870ö40min+T9239251031135190(152)132141128(137)140HF+N1T75+870ö40min+T7540351631188154(165)154135153(145)148HF+N2+850ö40min39455730128154(149)16498118(92)59HF+N2T21+850ö40min+T2139052033178188(181)177154154(149)139HF+N2T92+850ö40min+T9239151832197174(178)162136152(140)131HF+N2T75+850ö40min+T7539352331178158(175)18891138(125)146HF+N3T95+830ö40min+T9539853431160166(163)162150152(146)135HF+N3T92+830ö40min+T9238452032196186(187)180160152(161)170HF+N4T92+810ö40min+T9238552831186205(195)193178162(167)160HF+QT92+830ö40min+T9248755931209237(223)224181160(183)2074,,,SLT3N28,,315%Ni,,SLT3N28,,(),31(9501000),(3),1SLT3N282315%Ni315%Ni,,a)11450b)84503SLT3N28a)815200b)112004315%Ni,,,(,4),41315Ni,80,315%Ni,,,SLT3N28,,,,,,,SLT3N28315%Ni,315%Ni840ö40min,820ö40min315%Ni,AC3[1],,AC3,,,315%Ni,,,,,,,,,,,315%Ni,,,,,(SR),(315Ni,[2],,,;,5(1)315Ni,(2)315Ni(3)315%Ni,11.().,1988;8:12221.315Ni.,1997;34:315Ni!5119993Lr;LrLrLrLr315Ni315Ni,,,1000m3,,,715,,07MnNiCrMoVDR1500m3,07MnNiCrMoVDR,,,,,,,,,,:,,,B31.G,,,,,1828,