Single Track Melt Pool Measurements and Microstructures in Inconel 625

Published: February 20, 2018

Author(s)

Supriyo Ghosh, Li Ma, Lyle E. Levine, Richard E. Ricker, Mark R. Stoudt, Jarred C. Heigel, Jonathan E. Guyer

Abstract

We use single track laser melting experiments and simulations on Inconel 625 to estimate the dimensions and microstructures of the resulting melt pools. Our work is based on a design-of- experiments approach which uses multiple laser power and scan speed combinations. Single track experiments generate melt pools of certain dimensions. These dimensions reasonably agree with our finite element calculations. Phase-field simulations predict the size and segregation of the cellular microstructures that form along the melt pool boundaries for the solidification conditions that change as a function of melt pool dimensions.
Citation: JOM Journal of the Minerals Metals and Materials Society
Volume: 70
Issue: 6
Pub Type: Journals

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Keywords

Additive manufacturing, Melt pool, Finite element, Phase-field, Solidification, Dendrite
Created February 20, 2018, Updated September 06, 2018