IMECH-IR  > 宽域飞行工程科学与应用中心
Process maps and optimal processing windows based on three-dimensional morphological characteristics in laser directed energy deposition of Ni-based alloy
Shao JY(邵佳昀)1,2; Yu G(虞钢)1,2,3; He XL(何秀丽)1,2; Li SX(李少霞)1,2; Li ZX(李梓洵)1,2; Wang X(王旭)1,2
Corresponding AuthorYu, Gang(gyu@imech.ac.cn) ; He, Xiuli(xlhe@imech.ac.cn)
Source PublicationOPTICS AND LASER TECHNOLOGY
2021-10-01
Volume142Pages:13
ISSN0030-3992
AbstractConstructing 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.
KeywordAdditive manufacturing Directed energy deposition Track morphology Processing window Processing parameter
DOI10.1016/j.optlastec.2021.107162
Indexed BySCI ; EI
Language英语
WOS IDWOS:000670242000001
WOS KeywordMETALLIC COMPONENTS ; EVOLUTION ; MICROSTRUCTURE ; STABILITY ; POWDER
WOS Research AreaOptics ; Physics
WOS SubjectOptics ; Physics, Applied
Funding ProjectNational Natural Science Foundation of China[11502269] ; National Natural Science Foundation of China[11672304] ; plan of Beijing Municipal Commission of Science and Technology[Z181100003818015]
Funding OrganizationNational Natural Science Foundation of China ; plan of Beijing Municipal Commission of Science and Technology
Classification二类/Q1
Ranking1
ContributorYu, Gang ; He, Xiuli
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/87056
Collection宽域飞行工程科学与应用中心
Affiliation1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China;
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China;
3.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
Recommended Citation
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,&王旭.(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.
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