鋁硅系合金表面強化工藝及機理研究.pdf

1、武漢理工大學(xué)碩士學(xué)位論文鋁硅系合金表面強化工藝及機理研究姓名：彭軍波申請學(xué)位級別：碩士專業(yè)：材料學(xué)指導(dǎo)教師：陳冰泉2001.3.1塑壁墨魚全室墮堡垡：!苧墨塑里墮塹AbstractAluminumSilicon(A1si)alloyiswidelyusedinaerospacemachineandotherconditionsbecauseofitshighfluiditysmallexpandcoefficient，highantic

2、orrosionandhigh％／ppropertiesitisaveryimportantmaterialtousedtocastcomplexmachineaccessory，suchasinternalcombastionengine’spistonButAISialloymachanismaccossory’slifespanisveryshortbecauseofitslowintensionandlowweal—resist

3、anceSoitisneccessarytofindasimplewaytoimprovetheAISialloyaccessory’Slife—spanGreyRelationalIntervalAnalysisisbelongtoGreysystemsGreysystemswasfoundedbyprofessorDengJulongin1982Inalmosttwentyyears，Greysystemshavebeennoton

4、lydevelopedrapidlyintheorybutalsowidelyusedinindustry、agriculture、energy、traffic、society、economyandSOonNOWInternationalacademepaidmuchartentiononitHowevertherearenotrepoteronitsuseinmetalmaterialThispaperuseGeryRelationa

5、lintervalAnalysistotreatthetestresults，andgainasatisfiedresultsThisiterrnadoptsArgonArcasheatresourseAl—Sjcastingalloyasresearchobject，F(xiàn)eastheoneofstrengthenelements，adoptsremeltingstrengthentechnicstoincreasetheAlSiallo

6、ysurfaceintensityandwearresistanceThestrengthenmechanismofFeandotherelements，andglobemechanismofFestructurewerestudiedbyusingscalmingelectronmicroscopy(SEM)weldingmetallurgy，studyofmetal，metalwearingthoreyandGreyRelation

7、alintervalAnalvsisinmacroandmicropointofviewThisdissertationconsistofsixchaptersChapteronegivestheAl。Siall03’elementarycharacteristicsanditssystemTheemphasesiscastingAI—SialloycharacteristicsanditsapplicationTheoriginand

8、significanceoftheprojectstudyanddevelopmentandthemainworkareintrodcuedinchapterTwoTheintroductionofexperimentalmaterialandinstrumnetsarelistedinchapterthreeInchapterfourtheexperimentalparameterandresultsarediscussedparti

9、cularlyInchapterfive，authoradoptsGreyRelationalintervalAanlysistoanalysetheexperimentalresultsChaptersixdiscussesthemechanismofFeglobeandwear—resistamceItwasconcludedthatthere—meltingstrengthentechnicsiSatrustinesssimple