简介:ThestoredenergyandtheenergyreleaseduringSPD(superplasticdeformation)ofaZn-5Alalloywerestudied.Thealloyafterrollingprocessgainsmorestoredenergy,andtheas-rolledspecimencanobtainmaximumelongationandminimumflowstresswithouthotholdingtreatmentbeforeSPD.ExperimentalresultsshowthatstoredenergyreleaseprocessisalongwithSPDprocessandisalsoanimpetustoSPD.Theas-rolledZn-5Alalloyhas48J/molstoredenergywhichwasmeasuredwithDSC(differentialscanningcalorimeter)andconformswelltothecalculatedvalue.Theas-rolledZn-5AlalloyafterSPDwithanelongationof2500%releases112J/molstoredenergy.Analysisshowsthatthestrainrateisindirectratiototherateofstoredenergyrelease.
简介:在介绍标准件库结构的基础上。详细介绍了VB6.0二次开发SolidWorks2004标准件库中的关键技术,包括VB6.0与SolidWorks2004的集成、变量化设计技术和数据库的调用技术。
简介:Preparationofthehoneycombpatternedporousfilmofbiodegradablepolymerfortissueengineeringscaffolds;Productionofoutlooksforprecisioncostingdevelopment;ProductionofTantalumPowderbyMagnesiothermicReductionofFeedPreform;REACTIONSYNFIIESISOFREFRACTORYMETAL-CERAMICCOMPOSITES;Researchonthehighperformancesiliconcarbideceramicsandsiliconcarbidebasedcomposites。
简介:Anewpolymerelectrolytepoly(acrylonitrile)-dimethylsulphoxide-saltforelectrochemicalcapacitors,Astudyofyttriastabilizedzirconiasheetsfabricated,Aninvestigationonfine-grainformationandstructuralcharacterincastIN718superalloy,Automobilecomponentsmadeofmagncsium-aluminiumcomposites.
简介:本文从观测常规产品Ni70Mn25Co5触媒合金片的表面缺陷入手,讨论了触媒片表观质量对金刚石合成效果的影响,从而也为触媒产品质量标准的制定提供了某些参考依据。