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Impact of gas pressure on particle feature in Fe-based amorphous alloy powders via gas atomization: Simulation and experiment
Shi, Yutong1,2; Lu, Weiyan1; Sun, Wenhai1; Zhang, Suode1; Yang, Baijun1; Wang, Jianqiang1
Corresponding AuthorWang, Jianqiang(jqwang@imr.ac.cn)
2022-04-10
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume105Pages:203-213
AbstractGas atomization is now an important production technique for Fe-based amorphous alloy powders used in additive manufacturing, particularly selective laser melting, fabricating large-sized Fe-based bulk metallic glasses. Using the realizable k-epsilon model and discrete phase model theory, the flow dynamics of the gas phase and gas-melt two-phase flow fields in the close-wake condition were investigated to establish the correlation between high gas pressure and powder particle characteristics. The locations of the recirculation zones and the shapes of Mach disks were analyzed in detail for the type of discrete-jet closed-coupled gas atomization nozzle. In the gas-phase flow field, the vortexes, closed to the Mach disk, are found to be a new deceleration method. In the two-phase flow field, the shape of Mach disk changes from "S"-shape to "Z"-shape under the impact of the droplet flow. As predicted by the wave model, with the elevation of gas pressure, the size of the particle is found to gradually decrease and its distribution becomes more concentrated. Simulation results were compliant with the Fe-based amorphous alloy powder preparation tests. This study deepens the understanding of the gas pressure impacting particle features via gas atomization, and contributes to technological applications. (C) 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
KeywordGas atomization Fe-based amorphous powder Closed-wake Gas-melt flow Break-up Particle size distribution
Funding OrganizationNational Key Research and Development Program of China ; Key Research & Development Plan of Jiangxi Province ; National Natural Science Foundation of China
DOI10.1016/j.jmst.2021.06.075
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2016YFB1100204] ; Key Research & Development Plan of Jiangxi Province[20192ACB80001] ; National Natural Science Foundation of China[52171163] ; National Natural Science Foundation of China[51701214] ; National Natural Science Foundation of China[U1908219]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000797467000011
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/174273
Collection中国科学院金属研究所
Corresponding AuthorWang, Jianqiang
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Shi, Yutong,Lu, Weiyan,Sun, Wenhai,et al. Impact of gas pressure on particle feature in Fe-based amorphous alloy powders via gas atomization: Simulation and experiment[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2022,105:203-213.
APA Shi, Yutong,Lu, Weiyan,Sun, Wenhai,Zhang, Suode,Yang, Baijun,&Wang, Jianqiang.(2022).Impact of gas pressure on particle feature in Fe-based amorphous alloy powders via gas atomization: Simulation and experiment.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,105,203-213.
MLA Shi, Yutong,et al."Impact of gas pressure on particle feature in Fe-based amorphous alloy powders via gas atomization: Simulation and experiment".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 105(2022):203-213.
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