Microstructure simulations of Inconel 718 during selective laser melting using a phase field model

2018 ◽  
Vol 100 (9-12) ◽  
pp. 2147-2162 ◽  
Author(s):  
Xiaoqing Wang ◽  
Kevin Chou
Keyword(s):  
Selective Laser Melting ◽  
Phase Field ◽  
Inconel 718 ◽  
Field Model ◽  
Phase Field Model ◽  
Laser Melting

A Phase Field Approach for Modeling Melting and Re-Solidification of Ti-6Al-4V during Selective Laser Melting

2016 ◽  
Vol 704 ◽  
pp. 241-250 ◽  
Author(s):  
Peter Holfelder ◽  
Jin Ming Lu ◽  
Christian Krempaszky ◽  
Ewald A. Werner
Keyword(s):  
Selective Laser Melting ◽  
Phase Field ◽  
Field Model ◽  
Phase Field Model ◽  
Nucleation And Growth ◽  
Laser Melting ◽  
Laser Material ◽  
Field Approach ◽  
Multi Phase ◽  
Material Interaction

A Multi Phase Field model is proposed to describe the microstructure evolution induced by laser-material interaction in Selective Laser Melting (SLM). On the basis of the free enthalpy, the nucleation and growth processes occurring during the relevant phase transformations are explicitly taken into account. Within this contribution, the focus is laid on the SLM processing of the titanium alloy Ti-6Al-4V with special emphasis on the transition between β-titanium and melt. The results are discussed and compared to those of more conventional modelling approaches.

MARMOT Phase-Field Model for the U-Si System

2016 ◽  
Author(s):  
Larry Kenneth Aagesen ◽  
Daniel Schwen
Keyword(s):  
Phase Field ◽  
Field Model ◽  
Phase Field Model

scholarly journals Phase-field modeling of grain evolutions in additive manufacturing from nucleation, growth, to coarsening

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Min Yang ◽  
Lu Wang ◽  
Wentao Yan
Keyword(s):  
Additive Manufacturing ◽  
Phase Field ◽  
Field Model ◽  
Three Dimensional ◽  
Phase Field Model ◽  
Nucleation Theory ◽  
Experimental Result ◽  
Classical Nucleation Theory ◽  
Validation Experiment ◽  
Powder Particles

AbstractA three-dimensional phase-field model is developed to simulate grain evolutions during powder-bed-fusion (PBF) additive manufacturing, while the physically-informed temperature profile is implemented from a thermal-fluid flow model. The phase-field model incorporates a nucleation model based on classical nucleation theory, as well as the initial grain structures of powder particles and substrate. The grain evolutions during the three-layer three-track PBF process are comprehensively reproduced, including grain nucleation and growth in molten pools, epitaxial growth from powder particles, substrate and previous tracks, grain re-melting and re-growth in overlapping zones, and grain coarsening in heat-affected zones. A validation experiment has been carried out, showing that the simulation results are consistent with the experimental results in the molten pool and grain morphologies. Furthermore, the grain refinement by adding nanoparticles is preliminarily reproduced and compared against the experimental result in literature.

Sign in / Sign up

Export Citation Format

Share Document