Numerical methods for microstructural evolutions in laser additive manufacturing

Autor:	C. P. Hu, J. Y. Li, X. X. Yao, Z. J. Tan, P. Ge, Z. Y. Wan, Zhao Zhang, Q. Wu
Rok vydání:	2019
Předmět:	Computational Mathematics Grain growth Transformation (function) Computational Theory and Mathematics Field (physics) Modeling and Simulation Phase (matter) Numerical analysis Monte Carlo method Thermodynamics Energy (signal processing) Cellular automaton Mathematics
Zdroj:	Computers & Mathematics with Applications. 78:2296-2307
ISSN:	0898-1221
DOI:	10.1016/j.camwa.2018.07.011
Popis:	Different methods are developed for simulation of microstructural evolution in metals and alloys subject to Laser Additive Manufacturing. The Monte Carlo (MC) method is combined with a new proposed two scales strategy for simulation of the solidification and the subsequent solid-state phase transformation in Ti–6Al–4V.The Cellular Automaton (CA) method shows its higher efficiency in comparison with MC method. Moore neighbor type with energy barrier is recommended for the CA simulation of grain growth of Al 6061. The phase field (PF) model shows that different temperature gradients lead to different columnar grains in different layers of Ti–32wt.%Nb. The computed structures are related to experimental observations.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3f987cda70a79cd5ed6993a0388f44c7 https://doi.org/10.1016/j.camwa.2018.07.011 Zobrazit plný text záznamu Full Text from ScienceDirect