Q235B多层复合特厚板组织和性能研究的开题报告【摘要】本研究旨在探究Q235B多层复合特厚板的组织结构及性能，为其在建筑和机械制造等领域的应用提供理论和实践依据。首先，对该材料进行了化学成分分析、金相组织及力学性能测试，并与传统Q235B钢板进行了对比分析。其次，通过SEM技术对复合板的微观组织结构进行了观察和分析，探究了其层间结合机制和裂纹扩展路径等问题。最后，通过有限元数值模拟的方法，研究了复合板在受力过程中的应变和变形特征。【关键词】Q235B；多层复合特厚板；组织结构；性能研究；有限元分析【Abstract】TheaimofthisstudyistoexplorethemicrostructureandpropertiesofQ235Bmulti-layercompositethickplate,andprovidetheoreticalandpracticalbasisforitsapplicationinconstructionandmachinerymanufacturing.Firstly,thechemicalcompositionanalysis,metallographicstructureandmechanicalpropertiestestofthematerialwerecarriedout,andcomparedwithtraditionalQ235Bsteelplate.Secondly,themicrostructureofthecompositeplatewasobservedandanalyzedbySEMtechnology,andtheinterlayerbondingmechanismandcrackpropagationpathwereexplored.Finally,thestrainanddeformationcharacteristicsofthecompositeplateunderstresswerestudiedbythefiniteelementnumericalsimulationmethod.【KeyWords】Q235B;Multi-layercompositethickplate;Microstructure;Performanceresearch;Finiteelementanalysis