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Microstructural evolution and mechanical property of AA5050 alloy deformed by accumulative roll bonding

Journal Article


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Abstract


  • In this study, ultrafine-grained AA5050 sheets were fabricated by the accumulative roll bonding (ARB) process. Transmission electron microscope observations showed that at the early stage of ARB, the grain size was reduced in the normal direction and became elongated along the rolling direction. The elongated grains were cut out by dense dislocations, which then tangled and condensed, resulting in the formation of dislocation cells. As the deformation proceeded, the dislocation cells evolved to sub-grain boundaries and then grain boundaries. The ultrafinegrained microstructure was obtained via four ARB cycles. The tensile tests at 473 K and 523 K (200 °C and 250 °C) showed large elongations for strain rates of 1 × 103 s-1 and 1 × 104 s-1. © The Minerals, Metals & Materials Society and ASM International 2013.

Publication Date


  • 2014

Citation


  • Cheng, K., Lu, C., Tieu, A. K. & Zhu, H. (2014). Microstructural evolution and mechanical property of AA5050 alloy deformed by accumulative roll bonding. Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, 45 (2), 399-403.

Scopus Eid


  • 2-s2.0-84899446040

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=3731&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/2722

Number Of Pages


  • 4

Start Page


  • 399

End Page


  • 403

Volume


  • 45

Issue


  • 2

Abstract


  • In this study, ultrafine-grained AA5050 sheets were fabricated by the accumulative roll bonding (ARB) process. Transmission electron microscope observations showed that at the early stage of ARB, the grain size was reduced in the normal direction and became elongated along the rolling direction. The elongated grains were cut out by dense dislocations, which then tangled and condensed, resulting in the formation of dislocation cells. As the deformation proceeded, the dislocation cells evolved to sub-grain boundaries and then grain boundaries. The ultrafinegrained microstructure was obtained via four ARB cycles. The tensile tests at 473 K and 523 K (200 °C and 250 °C) showed large elongations for strain rates of 1 × 103 s-1 and 1 × 104 s-1. © The Minerals, Metals & Materials Society and ASM International 2013.

Publication Date


  • 2014

Citation


  • Cheng, K., Lu, C., Tieu, A. K. & Zhu, H. (2014). Microstructural evolution and mechanical property of AA5050 alloy deformed by accumulative roll bonding. Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, 45 (2), 399-403.

Scopus Eid


  • 2-s2.0-84899446040

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=3731&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/2722

Number Of Pages


  • 4

Start Page


  • 399

End Page


  • 403

Volume


  • 45

Issue


  • 2