不同材料抗气蚀性能的比较

(,450052):,,,,;,;:;;;:TG14:A:100123814(2000)0320024202ComparisonofCavitationErosionResistancebetweenIronsandSteelsCHENYan(ZhengzhouResearchInstituteofMechanicalEngineering)Abstract:Thecavitationerosionresistanceofsomeironsandsteelsthatarefrequentlyusedforpumpvalveandotherpartshadbeenmeasured.Thefracturesurfaceswereobservedbyopticalmicroscopeandscanningelectronmicroscopy.Itwasfoundthatbecauseofthefeatureofcavitationerosion,structurehomogeneityofmaterialisveryimportant,andcavitationdamageresistancepropertiesofstainlesssteelswithhomogeneouslow2carbonmartensiteareexcellent.Theeffectofinclusionswasalsodiscussed.Keywords:cavitationerosion;castiron;caststeel;property,,,:;,,(1)[1],(2)1001000MPa[2],125Lm11.1,11.21(w,%)CSiMnCrNiMoTiRb(MPa)Rs(MPa)D5(%)W(%)aK(Jöcm2)(HB)(h)(mg)1HT2003.11.51.0+21021015961.42QT4002153.02.90.3+4203001120015737.13QT600233.92.00.3+630450323515481.14ZG23024500.300.20.61+5502951744.577152152415ZG31025700.480.210.55+63039016305021015156+6ZG40Cr0.410.180.571.1+65040015315522015139.9+7ZG20SiMn0.171.2+60538529.759.811916115122.2+8ZG1Cr18Ni9Ti0.091.21.5198.20.51+50025545581251443071.59ZGOCr13Ni4Mo0.051.10.713.14.10.61+D80569020551702613040.2+10ZGOCr13Ni6Mo0.051.00.6813.05.10.50+83872619.454.21852823025.2+[1][3],,1.3[4]1520mös,:2000201227:(19632),,,4220003;2030mös,;30mös45mös,:15h,30h5h21,,,125Lm,5080Lm,,,QT60023,;HT200QT400215,HT200,,,,,,ZG2302450ZG20SiMnZG3102570ZG40Cr+,,ZG1Cr18Ni9TiZG2302450ZG20SiMnZG310257040Cr,ZG1Cr18Ni9TiZG20SiMn,,,,,,,ZG1Cr18Ni9TiZG0Cr13Ni4MoZG0Cr132Ni6Mo,,,,ZG1Cr18Ni9Ti1ZG1Cr18Ni9TiZG0Cr13Ni4MoZG0Cr13Ni6Mo,,,,1ZG1Cr18Ni9Ti250,;,223(1),(2)+,,(3),ZG0Cr13Ni4MoZG0Cr13Ni6Mo(4),,:[1]KnappRT,DallyJW,HammittFG.Cavitation[M].1970.[2]HammittFG.ObservationonCavitationDamageinaFlowingSystem[J].JournalofBasicEngineering,1963,(9):335.[3]H.N.[M]..1981.[4].[M].:,1983.5220003