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Single-Track Melt-Pool Measurements and Microstructures in Inconel 625

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Abstract

We use single-track laser melting experiments and simulations on Inconel 625 to estimate the dimensions and microstructure of the resulting melt pool. Our work is based on a design-of-experiments approach which uses multiple laser power and scan speed combinations. Single-track experiments generated melt pools of certain dimensions that showed reasonable agreement with our finite-element calculations. Phase-field simulations were used to predict the size and segregation of the cellular microstructure that formed along the melt-pool boundaries for the solidification conditions that changed as a function of melt-pool dimensions.

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Authors and Affiliations

  1. Materials Science and Engineering Division, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD, 20899, USA

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

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  1. Supriyo Ghosh
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  2. Li Ma
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  3. Lyle E. Levine
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  4. Richard E. Ricker
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  5. Mark R. Stoudt
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  6. Jarred C. Heigel
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  7. Jonathan E. Guyer
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Correspondence to Supriyo Ghosh.

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Ghosh, S., Ma, L., Levine, L.E. et al. Single-Track Melt-Pool Measurements and Microstructures in Inconel 625. JOM 70, 1011–1016 (2018). https://doi.org/10.1007/s11837-018-2771-x

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  • DOI: https://doi.org/10.1007/s11837-018-2771-x

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