Journal
SCRIPTA MATERIALIA
Volume 64, Issue 9, Pages 876-879Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2011.01.022
Keywords
Work hardening; Work softening; Dislocations; X-ray line-profile analysis
Categories
Funding
- US Department of Energy, Office of Science, and Office of Basic Energy Science [DE-AC02-06CH11357]
- National Science Foundation (NSF) [DMR-0231320, DMR-0909037, CMMI-0900271]
- Hungarian National Science Foundation OTKA [67692, 71594, 83793]
- Danish National Research Foundation for the Danish-Chinese Center for Nanometals
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [0900271] Funding Source: National Science Foundation
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Cold rolling reduces the quantity of dislocation densities in Ni-18% Fe alloys prepared by electrochemical deposition. The dislocation density evolution proposed earlier for the linearly decreasing work-hardening rate during stage III is revisited. The solution of the differential equation predicts that when the initial dislocation density is smaller or larger than the saturation value, then the dislocation density will increase or decrease during further plastic deformation. The predictions are verified by experimental values of dislocation densities determined by X-ray line-profile analysis. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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