Floating Grains in the HDC Casting 7075 Aluminum Alloy Ingot

Qing Feng Zhu; Zhi Hao Zhao; Xiang Jie Wang; Jian Zhong Cui

doi:10.4028/www.scientific.net/AMM.117-119.1531

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 117-119Floating Grains in the HDC Casting 7075 Aluminum...

Floating Grains in the HDC Casting 7075 Aluminum Alloy Ingot

Abstract:

7075 aluminum alloy ingot with the diameters of 100 mm was produced by Horizontal Direct-Chill (HDC). The temperature in the melt was measured and the ingots were examined in detail with the aim to reveal the floating grains in the HDC ingot. Experimental results show that very large floating grains with coarse dendrite arm spacing (DAS) mainly concentrate in the half-moon area near bottom surface of the HDC casting ingot, under the function of gravity. The floating grains in the HDC casting process is much bigger than that founded in Vertical Direct-Chill (VDC) casting process.

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Periodical:

Applied Mechanics and Materials (Volumes 117-119)

Pages:

1531-1534

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.117-119.1531

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Online since:

October 2011

Authors:

Qing Feng Zhu, Zhi Hao Zhao, Xiang Jie Wang, Jian Zhong Cui

Keywords:

7075 Aluminum Alloy, Dendrite Arm Spacing, Floating Grains, Horizontal Direct Chill Casting

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