Accumulative Roll Bonding of Pure Copper and IF Steel

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abstract

Severe plastic deformation is a new method to produce ultrafine grain materials with enhanced mechanical properties. The main objective of this work is to investigate whether accumulative roll bonding (ARB) is an effective grain refinement technique for two engineering materials of pure copper and interstitial free (IF) steel strips. Additionally, the influence of severely plastic deformation imposed by ARB on the mechanical properties of these materials with different crystallographic structure is taken into account. For this purpose, a number of ARB processes were performed at elevated temperature on the materials with 50% of plastic deformation in each rolling pass. Hardness of the samples was measured using microhardness tests. It was found that both the ultimate grain size achieved, and the degree of bonding depend on the number of rolling passes and the total plastic deformation. The rolling process was stopped in the 4th cycle for copper and the 10th cycle for IF steel, until cracking of the edges became pronounced. The effects of process temperature and wire-brushing as significant parameters in ARB process on the mechanical behaviour of the samples were evaluated.

authors

Saeed Tamimi, Mostafa Ketabchi, Nader Parvin, Mehdi Sanjari and Augusto Lopes

our authors

foto Augusto Luís Barros Lopes

Augusto Luís Barros Lopes

Assistant Professor

Groups

3 - Carbon Materials, Composites and Functional Coatings

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Publication Details

type
Journal Article
year
2014
journal
International Journal of Metals
digital object identifier
10.1155/2014/179723

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