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|Title:||Effect of milling on the damping behavior of nano-structured copper|
|Citation:||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|
|Appears in Collections:||Staff Publications|
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