Bulk Mechanical Alloying of Al/Fe Multilayer by Accumulative Roll-Bonding Process

Takuro Nakamura; Hiromoto Kitahara; Jung Goo Lee; Nobuhiro Tsuji

doi:10.4028/www.scientific.net/AMR.26-28.695

Paper Titles

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Structural and Mechanical Behaviors of Partially Devitrified Ti-Based Bulk Metallic Glass
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 26-28Bulk Mechanical Alloying of Al/Fe Multilayer by...

Bulk Mechanical Alloying of Al/Fe Multilayer by Accumulative Roll-Bonding Process

Abstract:

Pure Al (99%) and pure Fe (99.5%) sheets were mutually stacked and severely deformed up to equivalent strain of 16 by the accumulative roll bonding (ARB) process in an attempt to achieve bulk mechanical alloying. The deformation was carried out at RT. The Al/Fe sheets ARB processed by 1 cycle showed a number of shear bands penetrating the stacked layers. The Fe layers, which were harder than the Al layers, were subdivided by the shear bands into diamond-shaped regions. Dissolution of Fe into Al was observed and a supersaturated solid solution was formed in the specimen ARB processed by 10 cycles. It was also found that local amorphization occurred at interface regions via formation of Al5Fe2 intermetallic compound.