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Effect of initial microstructure on plastic flow behaviour during isothermal forging of Ti-10V-2Fe-3Al
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Jackson, M., Jones, N. G., Dye, D. and Dashwood, R. J. (2009) Effect of initial microstructure on plastic flow behaviour during isothermal forging of Ti-10V-2Fe-3Al. Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing, Vol.501 (No.1-2). pp. 248-254. doi:10.1016/j.msea.2008.09.071 ISSN 0921-5093.
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Official URL: http://dx.doi.org/10.1016/j.msea.2008.09.071
Abstract
The plastic flow behaviour and microstructural development during isothermal forging was determined for near beta alloy Ti-10V-2Fe-3Al. Two different initial microstructures were employed: (i) a beta forged billet with a large prior beta grain size with Widmanstatten alpha platelets; and (ii) an alpha-beta forged billet with prior globular primary alpha. The beta forged condition exhibited a peak stress followed by intense flow softening, which is attributed to the break up of the Widmanstatten alpha platelets. Evidence suggests that peak hardening at low strains is due to dislocation pile-ups at alpha platelet/subgrain beta interfaces and subsequent flow softening is attributed to the transmission of beta phase through the alpha platelets. A strain rate 'jump' test investigation provided sufficient evidence to suggest that there is a transition from dislocation dominant deformation mechanisms at high strains rates to diffusional dominant deformation at low strain rates in Ti-10V-2Fe-3Al during forging. (C) 2008 Elsevier B.V. All rights reserved.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) T Technology > TN Mining engineering. Metallurgy |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||
Journal or Publication Title: | Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing | ||||
Publisher: | Elsevier Science SA | ||||
ISSN: | 0921-5093 | ||||
Official Date: | 15 February 2009 | ||||
Dates: |
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Volume: | Vol.501 | ||||
Number: | No.1-2 | ||||
Number of Pages: | 7 | ||||
Page Range: | pp. 248-254 | ||||
DOI: | 10.1016/j.msea.2008.09.071 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
Data sourced from Thomson Reuters' Web of Knowledge
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