Thermally activated deformation in age-hardenable ferritic FeNiAlTi alloys

Smith I.O. and White M.G. (1975) Thermally activated deformation in age-hardenable ferritic FeNiAlTi alloys. Materials Science and Engineering, 21 C: 185-193. doi:10.1016/0025-5416(75)90214-1

Author Smith I.O.
White M.G.
Title Thermally activated deformation in age-hardenable ferritic FeNiAlTi alloys
Journal name Materials Science and Engineering
ISSN 0025-5416
Publication date 1975
Sub-type Article (original research)
DOI 10.1016/0025-5416(75)90214-1
Volume 21
Issue C
Start page 185
End page 193
Total pages 9
Subject 2200 Engineering
Abstract The early stages of plastic deformation in two age-hardenable Fe Ni Al Ti alloys have been investigated by means of the stress relaxation and incremental unloading techniques. The effective stress was found to be a similar function of ageing time to the 0.1% proof stress versus ageing time relationship. However, the magnitude of the change in effective stress was more than an order of magnitude lower. This change in effective stress with ageing and the plastic strain-rate versus effective stress relationship are explained in terms of double kink nucleation being the rate controlling process with the sideways expansion of the kink pairs being limited by the precipitate particles. The mobile dislocation density in the microstrain region appears to be a function of effective stress. When this is incorporated in the model, the activation area versus effective stress relationship is fully described and independent evaluations of activation area by single strain-rate change confirm this relationship.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
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Citation counts: Scopus Citation Count Cited 6 times in Scopus Article | Citations
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Created: Tue, 14 Jun 2016, 06:18:57 EST by System User