环件辗扩成形过程微观组织及性能控制研究进展.pdf

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1、第52卷第16期机械工程学报Vol.52No.162016年8月JOURNALOFMECHANICALENGINEERINGAug.2016DOI：10.3901/JME.2016.16.042*环件辗扩成形过程微观组织及性能控制研究进展秦芳诚李永堂巨丽齐会萍(太原科技大学金属材料成形理论与技术山西省重点实验室太原030024)摘要：高性能大型环件精确辗扩控形控性一体化制造是大型运载火箭仓体、风电法兰、核电反应堆及石油化工容器等高端装备向着安全、轻量、高效和长寿命方面发展的迫切需求。综述环件辗扩成形过程微观组织及性能研究现状，分析单、双道次简单热模拟压缩试验和显微组织演变数值

2、模拟技术在环件辗扩过程组织演变研究中的应用，探讨环件组织与性能控制中存在的问题，并指出目前的研究已无法满足上述高性能环件制造要求。提出复杂多道次物理模拟及内变量组织建模用于环件辗扩组织演化分析的必要性，探明环件宏观/微观织构定量表征和晶体塑性有限元法(Crystalplasticityfiniteelementmethod,CPFEM)揭示组织演变机理的可行性。阐述今后高性能环件辗扩成形组织演变及性能控制的研究方向与重点，未来必须构建辗扩过程环件组织、织构和力学性能之间及其与工艺参数的定量关系。关键词：环件辗扩；微观组织；多道次压缩；织构；性能控制中图分类号：TG331；TG

3、142AdvancesinControlofMicrostructureandPropertiesduringRollingFormingofRingPartsQINFangchengLIYongtangJULiQIHuiping(ShanxiKeyLaboratoryofMetallicMaterialsFormingTheoryandTechnology,TaiyuanUniversityofScienceandTechnology,Taiyuan030024)Abstract：Theintegrationofformingandmodificationformanufa

4、cturingthelarge-scaleringpartswithhighperformanceinprecisionringrollingistheurgentlyneedsofthehigh-endequipmentssuchascarrierrockets,windpowerflanges,nuclearpowerreactorsandpetrochemicalvesselsdeveloptosecurity,lightweight,high-efficiencyandlong-life.Inthisstudy,theresearchsituationonmicros

5、tructureandpropertiesduringringrollingissummarized.Theapplicationofsingle-andtwo-passhotcompressiontestsandmicrostructuresimulationtechniquesinmicrostructuraldevelopmentofringrollingareanalyzedindetail.Theexistingproblemsarediscussed,andthepresentstudyunabletosatisfythemanufacturinginhigh-q

6、ualityringisalsopointedout.Thenecessityofcomplicatedmulti-passphysicalsimulationandinternalstatevariablemethodtomicrostructuraldevelopmentofringrollingispresented.Thefeasibilityofthequantitativecharacterizationinmacro-textureandmicro-textureofrolledringandcrystalplasticityfiniteelementmetho

7、d(CPFEM)revealingitsmicrostructureevolutionmechanismisverified.Theresearchprospectsandhotspotsofmicrostructureevolutionandperformancecontrolforhigh-qualityringpartsarealsoexpounded.Thequantitativerelationamongmicrostructure,textureandmechanicalproperties