材料的热膨胀性能及其影响因素-华瑛

·60·20052(,200940):、,,。:;;ThemralExPansionCharacteirsitcofMaetiralsandIstInnueneeFaetor`。iYgn(BaosteelGmupShanghalNO.5etSelCo.,tLd.,ManaFetiurManagementDepartnlent,ShanhgalZ,Cihna):hTisPerintordueederlationforeomPositioniwthsutretureofmatedalsandPhysiespaarmeterOfthemralex-pansionPr0PertiestohteinlproveiwthKewords:,thanindetialsanalyzedinllueneefactoreoeiffeientOfthehtemralexpansion.ProvidedvalidseieneeaeeoingerseacrhdeveloPmentappliedthenpartieularsteelalloy.metalliemateirals;themralexPansion;meaneoieffeientOflinearthemralexpansion1,。。,,。,、。,。,,。22.1t,tZ,L,L:,:a(L:Ll)/L,(t:t;)△I/LI△T,,:p=△WVI△T。,。2.2,,—,。,。,U=b/,:a、b;,;mn。U。,m3,n,nm。。〔’〕,,,,,。,;。,,,,。,。2)(X5233.1t,:aT=·Cv。aTCv。。:p,C,/KV,:,,;K;V;C、。,C,T,,,T,,。3.2,。,。,,,。TM,:aTM=b,:a;TM;b。,,,[’〕,。3.3,(),H。:a=V,MHD,,:A;M;v。。3.4。、。,,W。,、〔`」。GsckenidenrE。,aE,:。=(E。+b),:a、b,。3.5t、、、、。。、。Megaw[’〕,,;,。:=K()(/)’。,,。、、,。,,,;,,,,,,,,。:a=C()T,fA(z)/T。,:q;A;rnT(K);Z;C(T)。3.6、,:SS,+Se+S。,,、:,1,。+,;C,C,,+C,e+C、m,:,,、,。、,m、;C,l、C,。、Cvm、。2(X)52T,T。,,,,。44.1。,;,,。,,,。,,。,。,。4.2,’〕。,、,,,a。,,。,。,,,,。,,。。,。、,;,,。4.3,“”,。iTmmesfeld。:△v=BvoexpkT],:Q;B;V。O;k;T(K)。。4.4。,,[8。[’〕。,,。,,,,。,〔’”〕。,,,a,a//,。,:,,,。,,。,,。4.5,,。。,,、,,20052·63·、、、。,,,,。4.6,,。a。:(),:GB/4T3391999,DIL402Ca(:10’/℃)。:(l)750℃xlh+930℃x15min+560℃x6h。(2)750℃xlh+930℃x15min+520℃x6h。(3)750℃xlh+930℃x15min+480℃x6h。(4)750℃xlh+930℃x15min。(5)750℃xlh。(6)750℃xlh800℃xhl。:xlh”,a,,,,。4.7、,。,。,,〔”〕。,,,。,。4.1--.2#l」Gurneisen,E.,HandbuehderPhysik,VOI.X,(1926),l59〔2〕Boottom,V.E.,Rev.sei.Insturm.,35(1964),374-376【3〕Kin,W.D.,porpertymeasurementathightempea-rture,(1959),255258【4],,,4,(1976)12,956-957[5〕Me,w,H.D.,2.st.,lX()(1939),8596〔6〕,(),17(1981),6,32347〕,,(1979),3649,132LS〕White,G.K.,J.hPys,C,5(1972),27312745[9〕Deshpande,V.T.andPawerR.R.,AetaCst.2A5(1969)415416【10〕Baorrn,T.H.K.andMunn,R.W.,hPil.M.15(1967),8,85103Ull〕,,,(1981),111215505000500050000341,,:560℃、520℃、480℃、。,a,。“750℃xlh+800℃