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Investigation into spatter behavior during selective laser melting of AISI 316L stainless steel powder
Liu, Yang1; Yang, Yongqiang1; Mai, Shuzhen1; Wang, Di1; Song, Changhui2
关键词Selective laser melting Spatter behavior High-speed photography Stainless steel powder Tensile properties Inclusions
刊名MATERIALS & DESIGN
2015-12-15
DOI10.1016/j.matdes.2015.08.086
87页:797-806
收录类别SCI
文章类型Article
WOS标题词Science & Technology
类目[WOS]Materials Science, Multidisciplinary
资助者National Natural Science Foundation of China (NSFC) ; Special Fund Project for Technology Innovation of Foshan City ; National Natural Science Foundation of China (NSFC) ; Special Fund Project for Technology Innovation of Foshan City
研究领域[WOS]Materials Science
关键词[WOS]KW FIBER LASER ; MECHANICAL-PROPERTIES ; BEAM OSCILLATION ; PARAMETERS ; POOL ; DYNAMICS ; TITANIUM ; DEFECTS ; KEYHOLE ; PLUME
英文摘要

During the process of selective laser melting (SLM), spatter is generated with a negative impact on the performance of parts. Two types of spatter have been identified: droplet spatter, produced by the tearing of molten metal and powder spatter, formed when non-molten metallic powder particles around the molten pool are blown away, both arising as a result of the impact of metallic vapor. Single-track experiments were performed in order to observe spatter behaviors by using a high-speed camera. The influence of energy input on the spatter behavior was investigated by employing 316L stainless steel powder. Results indicate that energy input affects the size, scattering state and jetting height of spatter. Energy dispersive spectroscope analyses show that oxygen contents increase in spatter and SLM parts. X-ray diffraction analyses show that diffraction peaks of austenite and ferrite are considerably lower than those in 316L powder owing to the generation of iron oxides (Fe + 2Fe2 + 304). Comparative tensile testing results show that although both groups of specimens manufactured with fresh and contaminated powders are mainly characterized by ductile fracture, the tensile properties of the latter are far inferior to those of the former, owing to a greater quantity of inclusions. (C) 2015 Published by Elsevier Ltd.

语种英语
所属项目编号51275179 ; 51405160 ; 2013AH100042
资助者National Natural Science Foundation of China (NSFC) ; Special Fund Project for Technology Innovation of Foshan City ; National Natural Science Foundation of China (NSFC) ; Special Fund Project for Technology Innovation of Foshan City
WOS记录号WOS:000363816000091
引用统计
被引频次:30[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bjmu.edu.cn/handle/400002259/58951
专题北京大学第三临床医学院_运动医学研究所
作者单位1.S China Univ Technol, Sch Mech & Automot Engn, Guangzhou 510640, Guangdong, Peoples R China
2.Peking Univ, Hosp 3, Inst Sports Med, Beijing 100191, Peoples R China
推荐引用方式
GB/T 7714
Liu, Yang,Yang, Yongqiang,Mai, Shuzhen,et al. Investigation into spatter behavior during selective laser melting of AISI 316L stainless steel powder[J]. MATERIALS & DESIGN,2015,87:797-806.
APA Liu, Yang,Yang, Yongqiang,Mai, Shuzhen,Wang, Di,&Song, Changhui.(2015).Investigation into spatter behavior during selective laser melting of AISI 316L stainless steel powder.MATERIALS & DESIGN,87,797-806.
MLA Liu, Yang,et al."Investigation into spatter behavior during selective laser melting of AISI 316L stainless steel powder".MATERIALS & DESIGN 87(2015):797-806.
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