Stored energy and annealing behavior of heavily deformed aluminium

Publication: Research - peer-reviewConference article – Annual report year: 2012

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It has been demonstrated in previous work that a two-step annealing treatment, including a low-temperature, long-time annealing and a subsequent high-temperature annealing, is a promising route to control the microstructure of a heavily deformed metal. In the present study, structural parameters are quantified such as boundary spacing, misorientation angle and dislocation density for 99.99% aluminium deformed by accumulative roll-bonding to a strain of 4.8. Two different annealing processes have been applied; (i) one-step annealing for 0.5 h at 100-400°C and (ii) two-step annealing for 6 h at 175°C followed by 0.5 h annealing at 200-600°C, where the former treatment leads to discontinuous recrystallization and the latter to uniform structural coarsening. This behavior has been analyzed in terms of the relative change during annealing of energy stored as elastic energy in the dislocation structure and as boundary energy in the high-angle boundaries. © (2012) Trans Tech Publications, Switzerland.
Original languageEnglish
JournalMaterials Science Forum
Publication date2012
Volume715-716
Pages367-372
ISSN0255-5476
DOIs
StatePublished

Conference

Conference4th International Conference on Recrystallization and Grain Growth
CountryUnited Kingdom
CitySheffield
Period04/07/1009/07/10
CitationsWeb of Science® Times Cited: 1

Keywords

  • Aluminum, Crystallization, Grain growth, Recrystallization (metallurgy), Annealing
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