学术综述2023NO.2SCIENCE&TECHNOLOGYINFORMATION科技资讯SCIENCE&TECHNOLOGYINFORMATION科技资讯3D打印金属材料疲劳实验及数值模拟研究综述叶万蓉曾国伟*闫相木邱乙张博文(武汉科技大学理学院湖北武汉430065)摘要：3D打印金属部件具有无需模具、成型快速、力学性能优异、形状可定制和抗腐蚀性好等优点，广泛应用于航空航天、汽车、医疗器械等领域。然而，当原材料粉末打印为金属部件时，在凝固及随后冷却过程中极易形成残余应力、微细孔洞、未熔化颗粒以及表面粗糙缺陷等问题，导致疲劳寿命和韧性均低于传统制造零件。该文介绍了国内外3D打印金属制造工艺，对静态与疲劳力学实验性能、疲劳裂纹扩展以及对应的数值模拟研究进行了总结，阐述了缺陷表征、后处理加工等因素与疲劳性能之间的关联分析，为我国金属3D打印行业提供参考依据。关键词：3D打印疲劳性能钛合金不锈钢铝合金中图分类号：TG456文献标识码：A文章编号：1672-3791(2023)02-0135-04AReviewofFatigueExperimentandNumericalSimulationof3DPrintingMetallicMaterialsYEWanrongZENGGuowei*YANXiangmuQIUYiZHANGBowen(CollegeofScience,WuhanUniversityofScienceandTechnology,Wuhan,HubeiProvince,430065China)Abstract:3Dprintingmetalpartshavetheadvantagesofnomold,fastforming,excellentmechanicalproperties,customizableshapeandgoodcorrosionresistance,andarewidelyusedinaerospace,automobile,medicalequipmentandotherfields.However,whentherawmaterialpowderisprintedasametalpart,itisveryeasytoformresidualstress,microholes,unmeltedparticlesandsurfaceroughnessdefectsduringsolidificationandsubsequentcooling,resultinginlowerfatiguelifeandtoughnessthantraditionalmanufacturingparts.Thispaperintroducesthe3Dprintingmetalmanufacturingprocessesathomeandabroad,summarizesthestaticandfatiguemechanicalexperi‐mentalproperties,fatiguecrackgrowthandcorrespondingnumericalsimulationstudies,andexpoundsthecorrela‐tionanalysisbetweendefectcharacterization,post-processingandotherfactorsandfatigueproperties,whichpro‐videsareferenceforthemetal3DprintingindustryinChina.KeyWords:3Dprinting;Fatigueperformance;Titaniumalloy;Stainlesssteel;Aluminumalloy目前金属3D打印的方法按输出能量来划分主要有激光、电弧、电子束等[1-4]。激光3D...
