锡铅锆元素对镁合金组织及性能影响-effect of sn, pb and zr on microstructure and properties of magnesium alloy.docxVIP

下载本文档

7
0
约6.75万字
约 98页
2018-08-07 发布于上海
举报
版权申诉

锡铅锆元素对镁合金组织及性能影响-effect of sn, pb and zr on microstructure and properties of magnesium alloy.docx

1、本文档共98页，可阅读全部内容。
2、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。
3、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。
5、该文档为VIP文档，如果想要下载，成为VIP会员后，下载免费。
6、成为VIP后，下载本文档将扣除1次下载权益。下载后，不支持退款、换文档。如有疑问请联系我们。
7、成为VIP后，您将拥有八大权益，权益包括：VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
8、VIP文档为合作方或网友上传，每下载1次，网站将根据用户上传文档的质量评分、类型等，对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档

锡铅锆元素对镁合金组织及性能影响-effect of sn, pb and zr on microstructure and properties of magnesium alloy

AbstractInthispaper,thedevelopmentofhighformabilityofmagnesiumalloyforresearchbackground,basedonboththeexistingresearchresultsandexistingproblems,andinordertoimprovethestrengthandtoughnessofmagnesiumalloysasthemainlinetoproceedfromthecontrolofalloycomposition,microstructureandproperties,thegasstirmeltingprocessandmethodofmetaltypecastingwereusedtoproducemagnesiumalloysofMg-Snsystem,Mg-Sn-PbsystemandMg-Sn-Pb-Zrsystem.TheeffectofSn,Pb,andZrelementsonmicrostructureandmechanicalpropertiesofmagnesiumalloyatroomtemperaturewerestudied,andfracturemechanismofexperimentalloyswerealsostudied.TheGleeble-3500thermal-mechanicalsimulationtesterwasusedtostudythermalcompressivedeformationbehaviorofexperimentmagnesiumalloys,andtheplasticdeformationbehaviorofthealloywerecomparisonanalyzed.As-castorganizationofMg-xSn(x=2,4,6,8)alloyswerecomposedbyα-MgandMg2Snphase.ThemicrostructureofpuremagnesiumwaschangedbytheadditionofSn.ThemicrostructureandpropertiesofMg-4Snalloyweremostoptimal,itstensilestrengthandelongationratereached112.9MPaand10%,respectively.ThefracturemodeofMg-4Snalloyexhibitedthecharacteristicofquasi-cleavagefracture.AfterPbelementwasaddedintoMg-4Snalloy,themicrostructureofas-castalloysconsistofα-MgandMg2Snphase.TheadditionofPbelementcaninhibittheprecipitationofMg2Snphaseontheboundary,reducetheamountofMg2SnphaseandchangethemorphologyofMg2Snphasetoshortrod-shaped.Pbelementdissolvesinα-MgmatrixandexistsintheMg2Snphase.WhenthePbcontentis2.5%,thetensilestrengthandelongationrateofthetestalloyarebetterthanthatofMg-4Snalloy,reached114.05MPaand12.48%,respectively,whilethehardnessofMg-4SnalloyisreducedbyadditionofPb，thefracturemodeofMg-4Sn-2.5Pballoyexhibitedthecharacteristicofquasi-cleavagefracture.AfterZrelementwasaddedintoMg-4Sn-2.5Pballoy,themicrostructureofas-castalloysconsistofα-Mg,Mg2SnandZrphase.TheadditionofZrelementdidnotsignificantlyrefinethegrainsize,andthereweretrendthatmakeprecipitatesalongthegrainboundaryprecipitatelikemesh.WhentheZrcontentis1.0%,thegrainsizeofmagnesium