Effect of Laser Beam Profile on Thermal Transfer, Fluid Flow and Solidification Parameters during Laser-Based Directed Energy Deposition of Inconel 718

doi:10.3390/ma16124221

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	Effect of Laser Beam Profile on Thermal Transfer, Fluid Flow and Solidification Parameters during Laser-Based Directed Energy Deposition of Inconel 718
	Chen B(陈博); Bian YH(边艳华); Li ZY(李志永); Dong BX(董斌鑫); Li SX(李少霞); Tian CX(田崇鑫); He XL(何秀丽); Yu G(虞钢)
刊名	MATERIALS ; 12
	2023-06
卷号	16 页码:4221
关键词	laser profile thermal behavior fluid flow dimensionless number cooling rate
DOI	10.3390/ma16124221
英文摘要	The profile of the laser beam plays a significant role in determining the heat input on the deposition surface, further affecting the molten pool dynamics during laser-based directed energy deposition. The evolution of molten pool under two types of laser beam, super-Gaussian beam (SGB) and Gaussian beam (GB), was simulated using a three-dimensional numerical model. Two basic physical processes, the laser-powder interaction and the molten pool dynamics, were considered in the model. The deposition surface of the molten pool was calculated using the Arbitrary Lagrangian Eulerian moving mesh approach. Several dimensionless numbers were used to explain the underlying physical phenomena under different laser beams. Moreover, the solidification parameters were calculated using the thermal history at the solidification front. It is found that the peak temperature and liquid velocity in the molten pool under the SGB case were lower compared with those for the GB case. Dimensionless numbers analysis indicated that the fluid flow played a more pronounced role in heat transfer compared to conduction, especially in the GB case. The cooling rate was higher for the SGB case, indicating that the grain size could be finer compared with that for the GB case. Finally, the reliability of the numerical simulation was verified by comparing the computed and experimental clad geometry. The work provides a theoretical basis for understanding the thermal behavior and solidification characteristics under different laser input profile during directed energy deposition.
分类号	二类
WOS研究方向	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter
语种	英语
WOS记录号	WOS:001014688500001
资助机构	National Natural Science Foundation of China [12202448] ; High-level Innovation Research Institute Program of Guangdong Province [2020 B0909010003] ; Research Project of Guangdong Aerospace Research Academy [GARA2022001000]
其他责任者	He, XL ; Yu, G (corresponding author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China. ; Yu, G (corresponding author), Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100190, Peoples R China. ; He, XL ; Yu, G (corresponding author), Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100190, Peoples R China. ; He, XL ; Yu, G (corresponding author), Guangdong Aerosp Res Acad, Guangzhou 511458, Angola.
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/92382]
专题	宽域飞行工程科学与应用中心
作者单位	1.{Li Zhiyong} Cranfield Univ Welding & Addit Mfg Ctr Cranfield MK43 0AL England 2.{Li Zhiyong, Li Shaoxia, Tian Chongxin, He Xiuli, Yu Gang} Guangdong Aerosp Res Acad Guangzhou 511458 Angola 3.{Chen Bo, Bian Yanhua, Li Zhiyong, Dong Binxin, Li Shaoxia, Tian Chongxin, He Xiuli, Yu Gang} Univ Chinese Acad Sci Sch Engn Sci Beijing 100190 Peoples R China 4.{Chen Bo, Yu Gang} Univ Chinese Acad Sci Ctr Mat Sci & Optoelect Engn Beijing 100190 Peoples R China 5.{Chen Bo, Bian Yanhua, Li Zhiyong, Dong Binxin, Li Shaoxia, Tian Chongxin, He Xiuli, Yu Gang} Chinese Acad Sci Inst Mech Beijing 100190 Peoples R China
推荐引用方式 GB/T 7714	Chen B,Bian YH,Li ZY,et al. Effect of Laser Beam Profile on Thermal Transfer, Fluid Flow and Solidification Parameters during Laser-Based Directed Energy Deposition of Inconel 718[J]. MATERIALS, 12,2023,16:4221.
APA	陈博.,边艳华.,李志永.,董斌鑫.,李少霞.,...&虞钢.(2023).Effect of Laser Beam Profile on Thermal Transfer, Fluid Flow and Solidification Parameters during Laser-Based Directed Energy Deposition of Inconel 718.MATERIALS,16,4221.
MLA	陈博,et al."Effect of Laser Beam Profile on Thermal Transfer, Fluid Flow and Solidification Parameters during Laser-Based Directed Energy Deposition of Inconel 718".MATERIALS 16(2023):4221.