Materials Reports 2022, Vol. 36 Issue (Z1): 21080257-6 |
METALS AND METAL MATRIX COMPOSITES |
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Process Optimization for Preparation of Metallic Powders by Exploding Foil with Pulsed Laser |
LIN Zhiwei1,2, ZHAO Xingke1,2, ZHAO Zenglei1, WANG Shize1,2
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1 Shunde Graduate School of University of Science and Technology Beijing, Foshan 528399, Guangdong, China 2 School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China |
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Abstract Metal powders are widely used industrial raw materials, and therefore it is necessary to continuously develop advanced metal powder preparation techniques. A laser thermal explosion powder-making process with a pulsed laser as heat source and a stainless-steel foil as raw material was proposed, and various powder samples under 25 process parameters were prepared by orthogonal test scheme. Particle size distribution of each kind of powder were studied by laser particle sizer, optical microscope and scanning electron microscope respectively. The sample powders were evaluated and the process parameters were optimized by two methods, range analysis and BP neural network (BPNN). It is found that compared with the conventional range analysis, the BP neural network model not only had better optimization effect, but also obtained powder samples with uniform and fine particle size and good sphericity with optimized process parameters. It indicates that the BP neural network analysis can provide a strong guarantee for the development of a new type of metal powder preparation technique of pulsed laser thermal explosion foil method.
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Published: 05 June 2022
Online: 2022-06-08
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Fund:Key-Area Research and Development Program of Guangdong Province (2019B90907002). |
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