I题目超声波对A380凝固行为的实验研究摘要传统导入方式的超声波处理虽然能够显著改善金属凝固组织和强化金属材料性能，但是由于存在诸多缺点，比如容易卷入夹杂物、对于高温合金的操作困难等，使得该技术在工业应用上有很大的难度。本文采用自主研发的“自吸式变幅杆”超声侧部导入技术，解决了超声波导入难题，并研究了该超声处理技术对铝基和铁基合金凝固特性、组织和性能的影响，探讨了其中的基础理论问题。为了探索超声波侧部导入处理工艺的可行性。本文通过实验分析超声波对A380凝固行为。关键词：超声波；A380；凝固IIABSTRACTTraditionalwaysofintroducingultrasonictreatmentalthoughcansignificantlyimprovethesolidificationstructureofmetalsandmetalmaterialstostrengthenperformance,butduetotheexistenceofmanyshortcomings,suchaseasytogetcaughtupininclusion,difficultoperationtohigh-temperaturealloyandsoon,makingthetechniquehasgreatdifficultinindustrialapplications.Inthispaper,theindependentresearchanddevelopmentof"selfsuctionhorn"ultrasonicsideofimporttechnologytosolvetheultrasonicimportproblem,andtostudytheeffectoftheultrasonictreatmenttechnologyofaluminummatrixandiron-basedalloysolidificationcharacteristics,microstructureandpropertiesof,discussesthebasictheoreticalproblems.Inordertoexplorethefeasibilityofultrasonictreatmenttechnology.Inthispaper,thesolidificationbehaviorofA380isanalyzedbyexperiment.KEYWORDS:ultrasonic;A380;solidification目录III摘要......................................................IABSTRACT.................................................II引言......................................................11相关概述................................................11.1超声波处理技术...............................................................................................11.2超声波中的金属熔体凝固...............................................................................21.2.1超声波处理工艺.....................................................................................21.2.2超声波在低温合金凝固过程中应用.....................................................31.2.3超声波在中温合金凝固过程中的应用.................................................42实验准备................................................62.1实验设备...........................................................................................................62.1.1超声波处理设备.....................................................................................72.1.2超声波衰减测量设备.............................................................................82.2分梳则试仪器...................................................................................................93超声波对凝固特性和组织的影响...........................123.1实验材料及实验方案.....................................................................................123.1.1实验材料...............................................................................................123.1.2实验方案...............................................................................................133.2超声波处理对力学性能的影响.....................................................................143.2.1超声波处理对抗拉强度和延伸率的影响...........................................143.2.2超声波处理对断口形貌的影响...........................................................174总结...................................................19IV参考文献.................................................
