具有梯度表层301不锈钢的力学性能和微观组织研究的中期报告摘要：梯度材料广泛应用于航空航天、汽车、医疗和能源等领域，以因其独特的力学性能和微观结构而备受关注。本研究利用物理气相沉积（PVD）技术制备了具有梯度表层的301不锈钢。通过拉伸实验、硬度测试和金相显微镜观察等手段研究了梯度表层的力学性能和微观组织结构。结果表明，梯度表层301不锈钢材料具有优异的力学性能和微观结构，表面硬度较高，拉伸强度和塑性良好，变形比较均匀，且微观组织变化较为明显。关键词：梯度材料；301不锈钢；力学性能；微观组织Abstract:Gradientmaterialshavebeenwidelyusedinaerospace,automotive,medicalandenergyfieldsbecauseoftheiruniquemechanicalpropertiesandmicrostructure.Inthisstudy,gradient-coated301stainlesssteelwaspreparedbyphysicalvapordeposition(PVD)technology.Themechanicalpropertiesandmicrostructureofthegradient-coatedlayerwerestudiedbytensiletests,hardnesstests,andmetallographicmicroscopeobservations.Theresultsshowedthatthegradient-coated301stainlesssteelmaterialhadexcellentmechanicalpropertiesandmicrostructure,withhighersurfacehardness,goodtensilestrengthandplasticity,uniformdeformation,andobviousmicrostructuralchanges.Keywords:Gradientmaterials;301stainlesssteel;Mechanicalproperties;Microstructure