加速电压对电子束熔丝沉积304不锈钢组织与静力学性能的影响  

EFFECT OF ACCELERATING VOLTAGE ON MICROSTRUCTURE AND STATICS PROPERTIES OF SS304 DEPOSITED BY ELECTRON BEAM FUSE

作　　者：陈家琪 孙宝福[1] 宁薇 冯美荣 CHEN JiaQi;SUN BaoFu;NING Wei;FENG MeiRong(College of Mechanical and Control Engineering,Guilin University of Technology,Guilin 541006,China;Guilin Shida Technology Co.,Ltd.,Guilin 541004,China;Guilin Yongfu County Metrology Verification Survey Institute,Guilin 541800,China)

机构地区：[1]桂林理工大学机械与控制工程学院,桂林541006 [2]桂林狮达技术股份有限公司,桂林541004 [3]桂林市永福县计量检定测量所,桂林541800

出　　处：《机械强度》2024年第4期859-866,共8页Journal of Mechanical Strength

基　　金：广西创新驱动发展专项资金项目(AA18242046)资助。

摘　　要：电子束熔丝沉积(Electron Beam Fuse Deposition,EBFD)是近年来发展较为迅速的金属3D打印技术。采用EBFD技术针对304不锈钢材料进行打印,比较电子束熔丝沉积过程中不同加速电压对成形产品宏观形貌、致密度、显微组织和力学性能的影响。结果表明,加速电压为50 kV时,微观组织中奥氏体晶粒较少,加速电压增加至60 kV时,奥氏体晶界完全形成,并随着加速电压增加而持续生长;当加速电压为60 kV时,综合力学性能表现最佳,各向异性表现最弱,断口也表现为韧性断裂。Electron beam fuse deposition(EBFD)is a rapidly developed metal 3D printing technology in recent years.The EBFD technology was used to print 304 stainless steel materials.The effects of different accelerating voltages in the process of EBFD on the morphology,density,microstructure and mechanical properties of the forming products were compared.The results show that when the accelerating voltage is 50 kV,there are a few austenite grains in the microstructure.When the accelerating voltage is increased to 60 kV,the austenite grain boundary is completely formed,and the growth continues with the increase of the accelerating voltage.When the accelerating voltage is 60 kV,the comprehensive mechanical properties are the best,the anisotropy is the weakest,and the fracture is ductile fracture.

关 键 词：电子束熔丝沉积 304 不锈钢 加速电压 各向异性 

分 类 号：TG456.3[金属学及工艺—焊接]