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Process maps and optimal processing windows based on three-dimensional morphological characteristics in laser directed energy deposition of Ni-based alloy

文献类型：期刊论文

作者Shao JY(邵佳昀)2,3; Yu G(虞钢)1,2,3; He XL(何秀丽)2,3; Li SX(李少霞)2,3; Li ZX(李梓洵)2,3; Wang X(王旭)2,3; He XL(何秀丽); Yu G(虞钢); Wang X; Wang X
刊名OPTICS AND LASER TECHNOLOGY
出版日期2021-10-01
卷号142页码:13
关键词Additive manufacturing Directed energy deposition Track morphology Processing window Processing parameter
ISSN号0030-3992
DOI10.1016/j.optlastec.2021.107162
通讯作者Yu, Gang(gyu@imech.ac.cn) ; He, Xiuli(xlhe@imech.ac.cn)
英文摘要Constructing processing window to fabricate defect-free components with high forming quality and desired performance has been crucial in directed energy deposition. Due to its complexity as a mass and energy timedependent system, it is still a key problem to be solved for laser powder-fed additive manufacturing to choose opportune processing parameters. In this paper, single scan track experiments were conducted under various combinations of processing parameters including laser power, scanning speed and powder feeding rate. Scan tracks had been thoroughly investigated through three-dimensional information including surface, longitudinal section and transverse section, which were correlated to each other in showing track morphological characteristics in directed energy deposition. Surface ripples, resembling fish scale in welding and chevron in selective laser melting, were found in directed energy deposition under low powder feeding rate and high linear energy density. Furthermore, several quantitative indexes, which were dimensionless mean roughness and ripples' interval in surface, dimensional roughness in longitudinal section and dilution rate in transverse section, were used to evaluate the forming quality. These quantitative indexes were found to be closely related to the defects in additive manufacturing, and forming quality and accuracy of additive-manufactured components. Relationship between proposed indexes and processing parameters was studied and the mechanism behind it was also discussed. Five states which were no fusion, lack of fusion, optimum, rough surface and undesired dilution rate were distinguished based on the proposed quantitative indexes. Finally, a processing window based on these indexes was proposed for the laser powder-fed additive manufacturing for Inconel alloys. It is found that powder feeding rate affects the distribution of the five states and laser power, scanning speed affect the range of the five states.
分类号二类/Q1
WOS关键词METALLIC COMPONENTS ; EVOLUTION ; MICROSTRUCTURE ; STABILITY ; POWDER
资助项目National Natural Science Foundation of China[11502269] ; National Natural Science Foundation of China[11672304] ; plan of Beijing Municipal Commission of Science and Technology[Z181100003818015]
WOS研究方向Optics ; Physics
语种英语
WOS记录号WOS:000670242000001
资助机构National Natural Science Foundation of China ; plan of Beijing Municipal Commission of Science and Technology
其他责任者Yu, Gang ; He, Xiuli
源URL[http://dspace.imech.ac.cn/handle/311007/87055]  
专题宽域飞行工程科学与应用中心
作者单位1.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China;
3.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China;
推荐引用方式
GB/T 7714		 Shao JY,Yu G,He XL,et al. Process maps and optimal processing windows based on three-dimensional morphological characteristics in laser directed energy deposition of Ni-based alloy[J]. OPTICS AND LASER TECHNOLOGY,2021,142:13.
APA 邵佳昀.,虞钢.,何秀丽.,李少霞.,李梓洵.,...&Wang X.(2021).Process maps and optimal processing windows based on three-dimensional morphological characteristics in laser directed energy deposition of Ni-based alloy.OPTICS AND LASER TECHNOLOGY,142,13.
MLA 邵佳昀,et al."Process maps and optimal processing windows based on three-dimensional morphological characteristics in laser directed energy deposition of Ni-based alloy".OPTICS AND LASER TECHNOLOGY 142(2021):13.

入库方式： OAI收割

来源：力学研究所

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