Rapid Solidification and Phase Composition of Gd-16wt%Co Alloy in Laser Melting Conditions

Wen Jing Yao; Feng Jie Zhang; Zhe Lu; Nan Wang; Yeon-Gil Jung; Jeh Yun Lee

doi:10.4028/www.scientific.net/AMM.446-447.79

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 446-447Rapid Solidification and Phase Composition of...

Rapid Solidification and Phase Composition of Gd-16wt%Co Alloy in Laser Melting Conditions

Abstract:

Solidification microstructure of Gd-16wt%Co master alloy is characterized by the primary (Gd), CoGd₃, and Co₇Gd₁₂ dendrites plus (Co₃Gd₄+Co₇Gd₁₂) eutectic. In the laser melting conditions, the rapid solidification of melting pool shows three layers along the radial direction. The size of melting pool decreases with the increase of scanning speed. The dendrites are refined and the eutectic disappears in the pool. Near the top of the pool, the metastable phases and the peritectic reaction are restrained in the rapid solidification conditions.

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Periodical:

Applied Mechanics and Materials (Volumes 446-447)

Pages:

79-82

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.446-447.79

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Online since:

November 2013

Authors:

Wen Jing Yao, Feng Jie Zhang, Zhe Lu, Nan Wang, Yeon-Gil Jung, Jeh Yun Lee

Keywords:

Co-Gd Compound, Laser Melting, Phase Composition, Rapid Solidification

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