Study on Process Parameters and Powder Properties of Laminar Gas Atomization Based on Laval Nozzle

Shen Luyu1; Chen Chaoyue1; Li Xinggang2; Shuai Sansan1; Xu Songzhe1; Hu Tao1; Jin Xiaoli3; Li Shanqing3; Wang Jiang1; Ren Zhongming1

2023-04-01

RARE METAL MATERIALS AND ENGINEERING   影响因子和分区

1002-185X

Laminar gas atomization technology based on Laval nozzle can efficiently prepare high-performance metal powders, but there is no systematic research on the process parameters and powder properties of this technology. In this work, AlSi10Mg alloy powders were prepared by laminar gas atomization equipment based on Laval nozzle. At the same time, the effects of atomization gas pressure and tube inner diameter on the overall morphology, three-dimensional morphology, sphericity, particle size distribution, physical properties and internal defects of the powders were studied by traditional analysis methods and X-ray computed tomography technology. Combined with the numerical simulation of single-phase gas flow field and gas-liquid two-phase flow, the influence of process parameters on powder properties was explained. The results show that the performance of AlSi10Mg powders prepared by laminar gas atomization technology based on Laval nozzle is better than traditional gas atomization methods. Due to the higher gas pressure and narrow tube inner diameter, the gas-to-melt mass flow rate is higher, and the metal melt is more likely to be broken. Therefore, the powders have better sphericity, narrow particle size distribution, high fine powder yield of nearly 50%, and less irregular powders and hollow powders. The overall performance of AlSi10Mg alloy powders prepared by laminar gas atomization can meet the requirements of additive manufacturing.

laminar gas atomization AlSi10Mg alloy powder parameters X-ray computed tomography numerical simulation

SCI ; EI

中文

其他

Materials Science ; Metallurgy & Metallurgical Engineering

Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering

WOS:000976102200026

NORTHWEST INST NONFERROUS METAL RESEARCH

20232314196294

Atomization ; Computerized tomography ; Flow of gases ; Gases ; Light transmission ; Morphology ; Nozzles ; Numerical models ; Particle size ; Powder metals ; Silicon ; Size distribution ; Two phase flow

Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Fluid Flow, General:631.1 ; Gas Dynamics:631.1.2 ; Computer Applications:723.5 ; Light/Optics:741.1 ; Chemical Operations:802.3 ; Mathematics:921 ; Mathematical Statistics:922.2 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Materials Science:951

MATERIALS SCIENCE

Web of Science

1.Shanghai Univ, Sch Mat Sci & Engn, State Key Lab Adv Special Steels, Shanghai 200444, Peoples R China
2.Southern Univ Sci & Technol, Acad Adv Interdisciplinary Studies, Shenzhen 518055, Peoples R China
3.Baoshan Iron Steel Co Ltd, Cent Res Inst, Shanghai 201900, Peoples R China

Shen Luyu,Chen Chaoyue,Li Xinggang,et al. Study on Process Parameters and Powder Properties of Laminar Gas Atomization Based on Laval Nozzle[J]. RARE METAL MATERIALS AND ENGINEERING,2023,52(4):1369-1379.

Shen Luyu.,Chen Chaoyue.,Li Xinggang.,Shuai Sansan.,Xu Songzhe.,...&Ren Zhongming.(2023).Study on Process Parameters and Powder Properties of Laminar Gas Atomization Based on Laval Nozzle.RARE METAL MATERIALS AND ENGINEERING,52(4),1369-1379.

Shen Luyu,et al."Study on Process Parameters and Powder Properties of Laminar Gas Atomization Based on Laval Nozzle".RARE METAL MATERIALS AND ENGINEERING 52.4(2023):1369-1379.