Enabling high-performance 3D printing of Al powder by decorating with high laser absorbing Co phase

doi:10.1016/j.addma.2019.101012

	Enabling high-performance 3D printing of Al powder by decorating with high laser absorbing Co phase
	Geng, Kang 2,3; Yang, Yafeng 1,2,3; Li, Shaofu 1,2; Misra, R. D. K.4; Zhu, Qingshan 2,3
刊名	ADDITIVE MANUFACTURING
	2020-03-01
卷号	32 页码:9
关键词	Laser powder bed fusion Powder processing Coating Aluminum In-Situ alloying
ISSN号	2214-8604
DOI	10.1016/j.addma.2019.101012
英文摘要	Pure Al with high laser reflectivity is essentially incompatible with laser powder bed fusion. The retention of a large number of unmelted particles leads to inferior geometrical quality and mechanical properties of printed pure Al parts. In the present study, we propose decorating Al with a small amount of high laser absorbing Co nanoparticles on the surface of Al powders to reduce laser reflectivity and improve printability. The experimental results confirmed that the approach was very effective. The near homogenous dispersion of Co slightly modified the surface chemical composition and roughened the powder surface. This approach completely melted the particles and eliminated the internal pores, thereby favorably tuning the geometrical dimensions. Additionally, the introduction of Co provided solid solution strengthening and precipitation hardening via dispersion of second-phase Al9Co2 with a coherent interfacial relationship with the Al matrix. The tensile properties of printed Al parts were comparable to commercial medium-strength Al alloys at an optimal Cocontent of 0.5 wt.%.
资助项目	Key Research Program of Frontier Sciences, Chinese Academy of Sciences[QYZDB-SSW-JSC045] ; National Natural Science Foundation of China[51874271] ; National Natural Science Foundation of China[51801201] ; DNL Cooperation Fund, CAS[DNL180304]
WOS关键词	MECHANICAL-PROPERTIES ; HEAT-TREATMENT ; MICROSTRUCTURE ; ALLOY ; BEHAVIOR
WOS研究方向	Engineering ; Materials Science
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000522928600040
资助机构	Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; National Natural Science Foundation of China ; DNL Cooperation Fund, CAS
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/40340]
专题	中国科学院过程工程研究所
通讯作者	Yang, Yafeng
作者单位	1.Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, POB 353, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Univ Texas El Paso, Dept Met Mat & Biomed Engn, 500 W Univ Ave, El Paso, TX 79968 USA
推荐引用方式 GB/T 7714	Geng, Kang,Yang, Yafeng,Li, Shaofu,et al. Enabling high-performance 3D printing of Al powder by decorating with high laser absorbing Co phase[J]. ADDITIVE MANUFACTURING,2020,32:9.
APA	Geng, Kang,Yang, Yafeng,Li, Shaofu,Misra, R. D. K.,&Zhu, Qingshan.(2020).Enabling high-performance 3D printing of Al powder by decorating with high laser absorbing Co phase.ADDITIVE MANUFACTURING,32,9.
MLA	Geng, Kang,et al."Enabling high-performance 3D printing of Al powder by decorating with high laser absorbing Co phase".ADDITIVE MANUFACTURING 32(2020):9.