ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Fine grained copper was studied using the stress relaxation technique and creep testing innano-indentation, to determine the activation volume involved in the micro-mechanism of thedeformation. This material exhibits a near-perfect elasto-plastic deformation, featured by a steepwork-hardening, after the elastic domain, followed by flow at a constant stress. Measurements of theactivation volumes in the various domains reveal the role of the dislocations and the variation in thedislocation density in the deformation mechanism. This emphasizes the importance, in thedetermination of the activation volume, of the deformation domain investigated as well as thetesting technique used and whether in both cases, the measurement is carried out in a transientdomain or condition where variation in dislocation density occurs
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/19/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.584-586.399.pdf
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