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Improvement of mechanical properties for Al alloys using equal-channel angular pressing

Horita, Z., Fujinami, T., Nemoto, M. and Langdon, T.G. (2001) Improvement of mechanical properties for Al alloys using equal-channel angular pressing Journal of Materials Processing Technology, 117, (3), pp. 288-292. (doi:10.1016/S0924-0136(01)00783-X).

Record type: Article


Equal-channel angular pressing (ECAP) was attempted at room temperature to refine grain sizes of six different commercial Al alloys, 1100, 2024, 3004, 5083, 6061 and 7075. Transmission electron microscopy revealed that submicrometer grain sizes are attained in these alloys. Tensile tests at room temperature showed that the strength increases with an increase in the number of pressings but the elongation to failure remains little changed following a large decrease after the first pressing. Static annealing experiments demonstrated that the extensive grain growth occurs above 200°C in 1100, 3004, 5083 and 6061 but the submicrometer-grained structures are stable in 2024 and 7075 even at 300°C. It was confirmed that the Hall–Petch relationship holds for the ECA-pressed alloys. The effect of sample size was further examined and the applied load was measured during ECAP for the possibility of scaling-up the process.

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Published date: 2001


Local EPrints ID: 23391
ISSN: 0924-0136
PURE UUID: 970c1a11-becf-4b2c-be23-c12ae1a6895e
ORCID for T.G. Langdon: ORCID iD

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Date deposited: 27 Mar 2006
Last modified: 17 Jul 2017 16:17

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Author: Z. Horita
Author: T. Fujinami
Author: M. Nemoto
Author: T.G. Langdon ORCID iD

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