选区激光熔化工艺参数对GH4169成形件表面品质的影响  

Effects of Selective Laser Melting Process Parameters on Surface Quality of GH4169 Forming Parts

作　　者：王亮[1] 李斌强 马威 崔然 王红英 姚龙辉 王斌斌 骆良顺[1] 陈瑞润[1] 苏彦庆[1] 郭景杰[1] Wang Liang;Li Binqiang;Ma Wei;Cui Ran;Wang Hongying;Yao Longhui;Wang Binbin;Luo Liangshun;Chen Ruirun;Su Yanqing;Guo Jingjie(National Key Laboratory for Precision Hot Forming of Metals,Harbin Institute of Technology)

机构地区：[1]哈尔滨工业大学金属精密热加工国家级重点实验室,哈尔滨150001

出　　处：《特种铸造及有色合金》2021年第9期1057-1062,共6页Special Casting & Nonferrous Alloys

基　　金：国家自然科学基金资助项目(51871075)。

摘　　要：以GH4169合金为研究对象,分析了激光功率、扫描速度、扫描间隔和扫描方式等工艺参数对选区激光熔化成形件表面品质的影响。对试验数据进行正交分析,观察不同工艺参数下成形件的表面品质。结果表明,当激光功率为320 W、扫描速率为1000 mm/s、扫描间隔为60μm、扫描旋转角度为67°、体能量密度为130~150 J/mm^(3)时,包层通道光滑、均匀、笔直,且搭接良好,表面几乎没有球化和粉末附着现象。因此,在该工艺窗口下GH4169成形件表面平整,品质较好,表面粗糙度(Ra)也相对较低。The effects of process parameters,including laser power,scanning speed,scanning interval and scanning strategy,on surface quality of selective laser melting(SLM)forming GH4169 alloy parts were analyzed.The experimental data was orthogonally analyzed and the surface of formed parts under different process parameters were observed.The results indicate that with the laser power of 320 W,the scanning speed of 1000 mm/s,the scanning interval of 60μm,the scanning rotation angle of 67°and the volume energy density in the range of 130~150 J/mm^(3),the cladding channels are smooth,even,straight,and especially well-lapped,and the spheroidization and powders adhesion phenomenon are absent on the surface.Therefore,the surface is flat with the desirable quality and the relatively low Ra value.

关 键 词：选区激光熔化 GH4169 工艺参数 表面品质 

分 类 号：TG146.15[一般工业技术—材料科学与工程] TG249.9[金属学及工艺—金属材料]