Related resources
Full-text held externally
Search for item elsewhere
University researcher(s)
Academic department(s)
The Effect of Cryogenic Deformation on the Limiting Grain Size in an SMG Al-Alloy
P.B. Prangnell and Y. Huang
J Mater Sci. 2008;43:7280-7285.
Access to files
Full-text and supplementary files are not available from Manchester eScholar. Full-text is available externally using the following links:
Full-text held externally
Abstract
The minimum grain size obtainable in an Al-0.1%Mg submicron grained (SMG) alloy, subjected to cryogenic plane strain deformation, and its subsequent stability during room temperature deformation has been investigated. A decreasing steady state grain size was obtained with reducing deformation temperature. However, a true nanocrystalline grain structure was not obtained even at 77K with the high angle boundary spacing only approaching the nanoscale in the sample normal direction. The cryogenically deformed material was unstable on subsequent deformation at room temperature and underwent rapid dynamic grain growth. Dynamic grain coarsening is shown to limit the minimum grain size achievable in an SPD process, even under cryogenic conditions.