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学科主题: 临床医学
题名:
Investigation into spatter behavior during selective laser melting of AISI 316L stainless steel powder
作者: 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
发表日期: 2015-12-15
DOI: 10.1016/j.matdes.2015.08.086
卷: 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
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
项目资助者: National Natural Science Foundation of China (NSFC) ; Special Fund Project for Technology Innovation of Foshan City
WOS记录号: WOS:000363816000091
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/58951
Appears in Collections:北京大学第三临床医学院_运动医学研究所_期刊论文

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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

Recommended Citation:
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.
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