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Deformation conditions for Ni powders undergoing mechanical processing

Garroni, Sebastiano (2012) Deformation conditions for Ni powders undergoing mechanical processing. Journal of Physics and Chemistry of Solids, Vol. 73 (6), p. 770-776. eISSN 1879-2553. Article.

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DOI: 10.1016/j.jpcs.2012.01.024

Abstract

Ni powders were submitted to mechanical processing by ball milling. The microstructural refinement of the processed powders was followed by X-ray diffraction by evaluating the average crystallite size and the average strain content. The Vickers micro-hardness was also measured. The experimental evidences were rationalized using a phenomenological model, which allowed to estimate the amount of powder processed at individual collisions. The density of dislocations was also estimated and correlated with the experimental Vickers micro-hardness values. The connection between the work- and gain-hardening mechanisms described by the Bailey–Hirsch and Hall–Petch relationships is discussed.

Item Type:Article
ID Code:8666
Status:Published
Refereed:Yes
Uncontrolled Keywords:A. metals, C. X-ray diffraction, D. mechanical properties
Subjects:Area 03 - Scienze chimiche > CHIM/02 Chimica fisica
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Chimica e Farmacia
Publisher:Elsevier
eISSN:1879-2553
Deposited On:21 Feb 2013 13:00

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