固溶处理和时效对17-4PH沉淀硬化不锈钢组织性能的影响

1724PH(,014010)0.053C216.0Cr24.5Ni23.1Cu(1724PH)10401h,,4704902h,HRC501724PHEffectofSolidSolutionandAgingonStructureandPropertiesof1724PHPrecipitation2HardeningStainlessSteelZhaoLiping,YangHuiandLiHuiqing(MaterialScienceSchool,BaotouUniversityofIronandSteelTechnology,Baotou014010)AbstractThetestresultsobtainedthatthestructureandpropertiesof0.053C216.0Cr24.5Ni23.1Cu(1724PH)pre2cipitation2hardeningstainlesssteelwereoptimumbysolidsolutionat1040for1h,oilcoolingandagingat470490for2h,andthehardnessofsteelwasuptoHRC50.MaterialIndex1724PHStainlessSteel,SolidSolution,Aging160mm1724PH,(1)11724PHP%Table1Chemicalcompositionof1724PHprecipitation2hardeningstainlesssteelP%CMnSiPSNiCrCu0.0530.620.570.0220.0214.516.03.1Fe2Cr2Ni2C[1],1724PH100011001000104010801h600,2F,4504704905101h2h3h,22.111724PH10401hFig.1Structureof1724PHprecipitation2hardeningstainlesssteel,solidsolutiontreatedat1040for1h,oilcooling++(1)22,1040,,,,,,(Cr),42244Vol.24.No.420037SPECIALSTEELJuly200321724PHTable2Effectofsolidsolutiontemperatureonhardnessof1724PHprecipitation2hardeningstainlesssteelPPh(HRC)1000138.81040141.81080140.0,Ms,,,2.2,,,(2)450,,470,,,,,490,(3),,,,31724PH3.2%Cu,,450470,,,,21724PH1040470(a)510(b)2hFig.2Structureof1724PHprecipitation2hardeningstainlesssteel:solidsolutiontreatedat1040,agingat470(a)and510(b)for2h31724PH(HRC),1040Table3Effectofagingtemperatureandtimeonhardness(HRC)of1724PHprecipitation2hardeningstainlesssteel,solidsolutiontreatedat1040PhP450470490510146.246.943.143.2252.150.048.142.0347.347.247.739.7,,,,,,,,,,1040,4704902h3(1)1724PH1040,1h,(2)1724PH,,4704902h,HRC501(AIC).TechnicalSupportforAmericanIndustri2alCastingsonControlofDeltaFerritein1724PhStainlessSteelCast2ings.1999,4,,38,,,1992:2003204209524:1724PH