Direct Cladding from Molten Metals of Aluminum and Magnesium Alloys Using a Tandem Horizontal Twin Roll Caster

Abstract:

This paper describes direct cladding of magnesium (Mg) and aluminum (Al) alloys using a tandem horizontal twin roll caster that has three pairs of upper and lower rolls. Manufacturing conditions that are appropriate for fabricating Al/Mg and Al/Mg/Al cladded material were investigated. The surface condition of the cladded cast strip was examined. An electron probe micro analyzer was used to observe the interface between Al alloy and Mg alloy. The thickness of the mixed layer of Al and Mg alloy was 15μm, and how the materials were connected was clarified. Microscopic observation and backscattered electron analysis were used to investigate the cladding mechanisms of the Al and Mg alloy layers. Average hardness was determined using the Vickers hardness test at the Al layer and at the diffused layer between Mg and Al alloys. Cladding of Al/Mg alloy and A/Mg/Al alloy was possible using a tandem twin-roll caster. In addition, Al₃Mg₂ and Al₁₂Mg₁₇ phase precipitation at the interface of the Al and Mg alloys was confirmed during direct cladding from molten metals.

• Periodical: Applied Mechanics and Materials (Volume 772)
• Pages: 250-256
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.772.250
• Online since: July 2015
• Authors: Hideto Harada*, Shin Ichi Nishida, Mayumi Suzuki, Hisaki Watari, Toshio Haga
• Keywords: Aluminium Alloy, Clad Material, Magnesium Alloy, Rapid Solidification, Roll Casting

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