Rapid Solidification in Bulk Ti-Nb Alloys by Single-Track Laser Melting

John D. Roehling; Aurélien Perron; Jean Luc Fattebert; Tomorr Haxhimali; Gabe Guss; Tian T. Li; David Bober; Adam W. Stokes; Amy J. Clarke; Patrice E.A. Turchi; Manyalibo J. Matthews; Joseph T. McKeown

doi:10.1007/s11837-018-2920-2

Rapid Solidification in Bulk Ti-Nb Alloys by Single-Track Laser Melting

John D. Roehling, Aurélien Perron, Jean Luc Fattebert, Tomorr Haxhimali, Gabe Guss, Tian T. Li, David Bober, Adam W. Stokes, Amy J. Clarke, Patrice E.A. Turchi, Manyalibo J. Matthews, Joseph T. McKeown

Multiscale Materials

Research output: Contribution to journal › Article › peer-review

35 Scopus citations

Abstract

Single-track laser melting experiments were performed on bulk Ti-Nb alloys to explore process parameters and the resultant macroscopic structure and microstructure. The microstructures in Ti-20Nb and Ti-50Nb (at.%) alloys exhibited cellular growth during rapid solidification, with average cell size of approximately 0.5 µm. Solidification velocities during cellular growth were calculated from images of melt tracks. Measurements of the composition in the cellular and intercellular regions revealed nonequilibrium partitioning and its dependence on velocity during rapid solidification. Experimental results were used to benchmark a phase-field model to describe rapid solidification under conditions relevant to additive manufacturing.

Original language	English
Pages (from-to)	1589-1597
Number of pages	9
Journal	JOM
Volume	70
Issue number	8
DOIs	https://doi.org/10.1007/s11837-018-2920-2
State	Published - Aug 1 2018

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Publisher Copyright:
© 2018, The Minerals, Metals & Materials Society.

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abstract = "Single-track laser melting experiments were performed on bulk Ti-Nb alloys to explore process parameters and the resultant macroscopic structure and microstructure. The microstructures in Ti-20Nb and Ti-50Nb (at.%) alloys exhibited cellular growth during rapid solidification, with average cell size of approximately 0.5 µm. Solidification velocities during cellular growth were calculated from images of melt tracks. Measurements of the composition in the cellular and intercellular regions revealed nonequilibrium partitioning and its dependence on velocity during rapid solidification. Experimental results were used to benchmark a phase-field model to describe rapid solidification under conditions relevant to additive manufacturing.",

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doi = "10.1007/s11837-018-2920-2",

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AU - Roehling, John D.

AU - Perron, Aurélien

AU - Fattebert, Jean Luc

AU - Haxhimali, Tomorr

AU - Guss, Gabe

AU - Li, Tian T.

AU - Bober, David

AU - Stokes, Adam W.

AU - Clarke, Amy J.

AU - Turchi, Patrice E.A.

AU - Matthews, Manyalibo J.

AU - McKeown, Joseph T.

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Rapid Solidification in Bulk Ti-Nb Alloys by Single-Track Laser Melting

Abstract

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