Journal
MATERIALS SCIENCE AND TECHNOLOGY
Volume 25, Issue 5, Pages 625-631Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1179/174328408X332771
Keywords
Accumulative roll bonding; Aluminium sheet; Second phase particles; Microstructure; Microtexture; Ultrafine grains
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The accumulative roll bonding (ARB) process was carried out on a high purity alloy (AA1100) and a particle containing aluminium alloy (AA3003) for up to eight cycles. The electron backscattered diffraction (EBSD) method was utilised to investigate the microstructural and microtextural evolution in ARB processed sheets. The results indicate that the lack of second phase particles in pure aluminium hinders grain refinement and leads to the formation of unrefined bands, which results in the increase of the overall texture intensity and the development of a strong texture. A submicrometre grain structure in this alloy develops at the final stages of the process. It was also found that the presence of second phase particles in AA3003 alloy prevents the development of such unrefined bands and improves grain refinement during the ARB process, which results in a more homogenous microstructure of ultrafine grains.
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