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Process analysis of direct laser melting to fabricate layered hybrid beads

Process analysis of direct laser melting to fabricate layered hybrid beads
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摘要 The successful fabrication of layered hybrid beads by DLM process is limited by dissimilar melting ranges of different powders.For the application of DLM process into manufacturing industries,target mechanical properties of final product must be achieved.Process analysis was performed for the DLM fabrication of layered hybrid beads by using stainless steel (SS 316L) and titanium powders.For the analysis of fabrication characteristics,single hybrid bead was formed using SS316L powder onto the base plate and then Ti powder was melted onto the previous melted layer.In addition,multi-layer hybrid beads were fabricated for the analysis of the layering effects between them.From these studies,the effects of the processing parameters,such as laser power,scan rate and scan line spacing on surface morphology were characterized and optimum processing conditions for the DLM fabrication of layered hybrid beads were developed. The successful fabrication of layered hybrid beads by DLM process is limited by dissimilar melting ranges of different powders.For the application of DLM process into manufacturing industries,target mechanical properties of final product must be achieved.Process analysis was performed for the DLM fabrication of layered hybrid beads by using stainless steel (SS 316L) and titanium powders.For the analysis of fabrication characteristics,single hybrid bead was formed using SS316L powder onto the base plate and then Ti powder was melted onto the previous melted layer.In addition,multi-layer hybrid beads were fabricated for the analysis of the layering effects between them.From these studies,the effects of the processing parameters,such as laser power,scan rate and scan line spacing on surface morphology were characterized and optimum processing conditions for the DLM fabrication of layered hybrid beads were developed.
作者 Jeong-hwan JANG Sung-min MUN Tae-hyun KIM Young-hoon MOON
机构地区 School of Mechanical Engineering
出处 《中国有色金属学会会刊：英文版》 CSCD 2012年第S3期813-819,共7页 Transactions of Nonferrous Metals Society of China
基金 Project(2012-0000-965)supported by the National Core Research Center Program through the National Research Foundation of Korea Funded by the Ministry of Education,Science and Technology
关键词 STAINLESS steel 316L Ti powder energy density surface roughness DIRECT laser melting process LAYERED HYBRID BEADS stainless steel 316L Ti powder energy density surface roughness direct laser melting process layered hybrid beads
分类号 TG665 [金属学及工艺—金属切削加工及机床]
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参考文献18

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二级参考文献10

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中国有色金属学会会刊：英文版
2012年 第S3期

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