Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.msea.2003.08.064
Title: Effect of milling on the damping behavior of nano-structured copper
Authors: Srikanth, N.
Thein, M.A.
Gupta, M. 
Keywords: Anelasticity
Grain boundary
Interface
Nano-material
Non-destructive testing
Issue Date: 5-Feb-2004
Source: Srikanth, N., Thein, M.A., Gupta, M. (2004-02-05). Effect of milling on the damping behavior of nano-structured copper. Materials Science and Engineering A 366 (1) : 38-44. ScholarBank@NUS Repository. https://doi.org/10.1016/j.msea.2003.08.064
Abstract: In the present study, elemental Cu powder was mechanically milled (MMed) for 10 h to reduce the grain (crystalline) size in the nano-range (<100 nm). The mechanically milled powder (10 h-MMed) and elemental powder without mechanical milling (MM) (0 h-MMed) was consolidated by die-cold compaction and were further hot extruded at different temperatures to maintain a crystallite size within the nano-range. Further, the specimen was tested by a novel free-free type suspended beam arrangement, coupled with circle-fit approach to determine damping characteristics. The characterization results help to understand the effect of the nano-size grains on the overall damping capacity of the bulk samples compared to a normal micro-crystalline sample. Results show that the damping capacity of the nano-grained material increases due to the presence of process induced microstructural changes similar to the damping behavior of a micro-grain sized specimen. © 2003 Elsevier B.V. All rights reserved.
Source Title: Materials Science and Engineering A
URI: http://scholarbank.nus.edu.sg/handle/10635/60057
ISSN: 09215093
DOI: 10.1016/j.msea.2003.08.064
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