NDLI: Numerical Modeling of Transport Phenomena and Dendritic Growth in Laser Conduction Welding of 304 Stainless Steel

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Tan, Wenda Neil, S. Bailey Yung, C. Shin
Copyright Year	2011
Abstract	A multi-scale model is developed to investigate the heat/mass transport and dendrite growth in laser spot conduction welding. A macro-scale transient model of heat transport and fluid flow is built to study the evolution of temperature and velocity field of the molten pool. The molten pool geometry and other solidification parameters are calculated, and the predicted pool geometry matches well with experimental result. On the micro-scale level, the dendritic growth of 304 stainless steel is simulated by a novel model that has coupled the Cellular Automata (CA) and Phase Field (PF) methods. The epitaxial growth is accurately identified by defining both the grain density and dendrite arm density at the fusion line. By applying the macro-scale thermal history onto the micro-scale calculation domain, the microstructure evolution of the entire molten pool is simulated. The predicted microstructure achieves a good quantitative agreement with the experimental results.
Sponsorship	Manufacturing Engineering Division
Starting Page	243
Ending Page	251
Page Count	9
File Format	PDF
ISBN	9780791844304
DOI	10.1115/MSEC2011-50219
Volume Number	ASME 2011 International Manufacturing Science and Engineering Conference, Volume 1
Conference Proceedings	ASME 2011 International Manufacturing Science and Engineering Conference
Language	English
Publisher Date	2011-06-13
Publisher Place	Corvallis, Oregon, USA
Access Restriction	Subscribed
Subject Keyword	Microstructure modeling Laser conduction welding Cellular automata-phase field model Multi-component alloy Heat conduction Transport phenomena Computer simulation Welding Lasers Stainless steel
Content Type	Text
Resource Type	Article

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