NDLI: Molecular Dynamics Simulation on Diffusion Welding Between Cu and Al Under Different Pressures and Roughnesses

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Molecular Dynamics Simulation on Diffusion Welding Between Cu and Al Under Different Pressures and Roughnesses

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Li, Xiong-Hui Chu, Wen-Xiao Ma, Ting Wang, Qiu-Wang
Copyright Year	2016
Abstract	As an advanced welding method, the diffusion welding is widely applied in aerospace, instrumentation industry, engine manufacturing, etc. Not only the diffusion welding can realize the connection of different metals, but also it solves the difficult welding problem between metals and ceramics. Aiming to research the diffusion process during welding, this study investigates the diffusion behavior and mechanisms of Cu and Al under different pressures and surface roughnesses in the aspect of atomic level by using the molecular dynamics (MD) method. From the results, we can find that the pressure influences obviously the second thickness growth stage, which is one of the three stages in the whole diffusion process. The grooves generated by the surface roughness, is filled mainly by the deformation of Al, which fits the initial surface profile. The diffusion is promoted as the contacting area increases. Whether the surface is smooth or rough, the pressure has little impact on the final thickness. This study succeeds in explaining the diffusion mechanism, which is significant for the experiments of diffusion welding in practice.
Sponsorship	Heat Transfer Division
File Format	PDF
ISBN	9780791850336
DOI	10.1115/HT2016-7380
Volume Number	Volume 2: Heat Transfer in Multiphase Systems; Gas Turbine Heat Transfer; Manufacturing and Materials Processing; Heat Transfer in Electronic Equipment; Heat and Mass Transfer in Biotechnology; Heat Transfer Under Extreme Conditions; Computational Heat Transfer; Heat Transfer Visualization Gallery; General Papers on Heat Transfer; Multiphase Flow and Heat Transfer; Transport Phenomena in Manufacturing and Materials Processing
Conference Proceedings	ASME 2016 Heat Transfer Summer Conference collocated with the ASME 2016 Fluids Engineering Division Summer Meeting and the ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels
Language	English
Publisher Date	2016-07-10
Publisher Place	Washington, DC, USA
Access Restriction	Subscribed
Subject Keyword	Deformation Welding Diffusion processes Metals Molecular dynamics Instrumentation Surface roughness Molecular dynamics simulation Ceramics Diffusion bonding (metals) Diffusion (physics) Pressure Aerospace industry Engines Manufacturing
Content Type	Text
Resource Type	Article

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