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1.
Modeling and optimizing of steel and mushy Al-28Pb alloy bonding   总被引:8,自引:0,他引:8  
1 INTRODUCTIONAtpresent,thetypicalmaterialofneotypebear ingissteel backedAl 2 0Snalloybonding plate[1 ] .Forsteel backedAl 2 0Snalloybondingplate ,steelbackhashighstrengthwhichcanbeartheexternalload ,andAl 2 0SnalloylayerisalubricatingoneinwhichAlsubstratehasexcel…  相似文献   

2.
1 INTRODUCTIONThecommonsteel backedAlbasebondingplateincludessteel backedAl Snbondingplate[1 ,2 ] andsteel backedAl Pbbondingplate[3 ,4] m  相似文献   

3.
1 INTRODUCTIONNanocrystallineAl richglassalloyshaveattract edgreatattentionasanewmaterialduetoitsmuchhigherspecificstrengththanthehigheststrengthofconventionalcrystallineAl basedalloys[1 ] .Refs.[2 ,3]reportedthatthefracturestrengthisabove 1 0 0 0GPaforAl richamo…  相似文献   

4.
Relationship between solid fraction and distribution of Pb in Al-Pb ingot   总被引:4,自引:0,他引:4  
INTRODUCTIONAl Pbhypermonotecticalloyisanewtypebear ingmaterial[1] .Greatemphasishasbeenputonites peciallysince 1990s[2~ 4 ] .PbhasexcellentlubricatingpropertywhichcanmatchthatofSn ,butitscostismuchlowerthanthatofSn ,soAl SnalloyisreplacedbyAl Pballoyinthefieldo…  相似文献   

5.
1 INTRODUCTIONAluminiumalloyswithhighdampingcapacitywerefoundinseveralalloysystems ,suchasAlSi,AlFeandAlNi[1~ 3] .Highdampingcapacityofthesealloyswereobtainedusuallybystrongcold process(deformationamountεislargerthan 90 % ) .Suchalargeplasticdeformationcausedby…  相似文献   

6.
1 INTRODUCTIONRapidlysolidified (RS)Al Fe V Siheat resist ingalloyhasrecentlydrawnmuchattentioninastron avigationandaviationfieldforitsexcellentmechani calpropertiesatbothambientandhightemperatures,lowdensityandlowcost[1~3] .Previousstudiesshowedthatthemainca…  相似文献   

7.
Behavior of calcium silicate in leaching process   总被引:3,自引:0,他引:3  
1 INTRODUCTIONIngeneral ,aluminacan tbeproducedeconomicallybyBayerprocessinChinabecausethebauxitecharacter izesindiasporeandabout 80 %bauxiteexistinlowde greeofthemassratioofaluminatosilica(A/S)whichvariesfrom 4to 9[1] .Andabout 4 0 %ofaluminaispro ducedbysintering…  相似文献   

8.
1 INTRODUCTIONGrainrefinementofferssubstantialbenefitsinbothcontinuouscastingbydirectchill (DC)andincast to shapeproducts[1].Al 5%Ti 1 %Bmasteral loy ,whichmainlycontainsTiAl3andTiB2 particlesinAlmatrix[2 ,3]hasbeenproventogivethebestgrainrefinement[4 ,5 ].Additionof 0 …  相似文献   

9.
02 0 0 1 N 杂环化合物对Al Si合金在盐酸中腐蚀的影响。A .A .Mazhar ,etal.InfluenceofN hete rocycliccompoundsonthecorrosionofAl Sialloyinhydrochloricacid .Corrosion ,2 0 0 2 ,5 8(3) :192~2 0 0 .0 2 0 0 2 脂肪酸氨基脲硫对软钢腐蚀的缓蚀作用。M .A .Quraishi,etal.Inhibitionofmildsteelcorro sioninthepresenceoffattyacidthiose…  相似文献   

10.
1 INTRODUCTIONThebulkamorphousalloysofMg TM Ln ,Ln Al TM ,Zr Al TM ,Hf Al TMandTi Zr TMwerepreparedbyInoueandhisco workerssince 1990 [1] .Thec  相似文献   

11.
1 INTRODUCTIONAlliedSignalCompanyinAmericanfirstde signedaseriesofrapidlysolidified (RS)Al Fe V Sialloyswithhighspecificstrengthandexcellentheat resistance[1~ 6] .Thistypeofmaterialsweremadebyusingmeltspinningribbons ,mechanicalgrainding ,vacumdegassing ,hotpre…  相似文献   

12.
Improving hot deformability of TiAl alloys by minor additions of Ni and Mg   总被引:1,自引:0,他引:1  
1 INTRODUCTIONTiAlalloysarepotentialaerospaceenginemateri alsbecauseoftheirlowdensityandhighperformanceatelevatedtemperature[1] .Se  相似文献   

13.
1 INTRODUCTIONInthepasttwodecadesmuchattentionhasbeenpaidtothestudyofCu Al Nishapememoryal loys[1~ 7] .Resultsshowthatthealloyshaverelativelygood phasestability[8] ,goodagingstability[9] andhighsuperelasticity[10 ,11] .Intheresearchofsupere lasticityandtrainingforob…  相似文献   

14.
1 INTRODUCTIONCu basedshapememoryalloys (SMAs)arecom merciallyattractivesystemsforapplicationsbecauseoftheirlowercost.Uptonow ,Cu ZnandCu AlbasedSMAshavebeenwidelystudied .However,theseCu basedalloys,especiallythealloysofCu Al NisystemandtheoneswithhighAlcont…  相似文献   

15.
Electrode characteristics of non-stoichiometric Ml(NiMnAlFe)_x alloys   总被引:4,自引:3,他引:1  
1 INTRODUCTIONMischmetalbasedAB5 typeMm (NiCoMnAl) 5alloysarenowwidelyusedasthenegativeelectrodematerialsofNi/MHbatteries.Amongtheelementsofthealloys,Cohasbeenbelievedtohavetheeffectofloweringthevolumeexpansionofthecompoundonhydrogenation[1 ] andpreventingth…  相似文献   

16.
1 INTRODUCTIONAluminiumalloysreinforcedwithaluminidepar ticles (NiAl3,FeAl3,ZrAl3,TiAl3,etc) possesshighspecificstrength ,highspecificmodulusandex cellentpropertiesbothatambientandelevatedtem perature[1~ 6 ] .Comparedwithmostotheraluminium richintermetallic ,Al3Tii…  相似文献   

17.
1 INTRODUCTIONAl Mg Scalloy possesseshighstrength ,hightoughness,lowerdensity,goodweldabilityandcor rosionresistance[1 ,2 ] .Applyingthesuperplasticityofthesealloystoformimportantcomplexpartsforthespacecraftisasignificantresearchsubjectatpre sent[3 ,4] .Thisresea…  相似文献   

18.
1 INTRODUCTIONThedirectionallysolidifiedNi3AlbasealloyIC6AwiththechemicalcompositionofNi (7.5~8.5 )Al (13.0~ 15 .0 )Mo (0 .0 2~ 0 .1)B (0 .0 0 5~0 .0 5 )Y (massfraction ,% )hasbeenrecentlydevel opedbasedonalloyIC6asahigh temperaturestruc turalmaterialusedforadvancedjet enginevanesop er…  相似文献   

19.
Kinetics on oxidation process of MgAlON spinel   总被引:1,自引:0,他引:1  
1 INTRODUCTIONTheformulaofaluminumoxynitrideisAl(6 4 x) /3O32 -xNxandthemoststableAlONhasaspinelstructureofx =5,i.e .Al2 3O2 7N5 .Thealu minumandmagnesiumoxynitride (MgAlON )isasolidsolutionofMgOdissolvedinAlONspinel,andMgAlONisaverystablespinel[1,2 ].Itisaveryuse fulhigh…  相似文献   

20.
Aluminothermal reaction to prepare Al-Ti-C master alloy   总被引:4,自引:1,他引:3  
1 INTRODUCTIONSincealuminothermalreactionwasputforwardtoprepareAl Timasteralloyin 1 958[1],ithasbeenwidelyusedtoproduceAl TimasteralloythroughthereactionbetweenTi containingfluoridesaltssuchaspotassiumtitaniumfluoride ,K2 TiF6 ,andaluminummelt,andwaslateradapte…  相似文献   

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