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|Title:||Microstructural, physical, and mechanical characteristics of bulk nanocrystalline copper synthesised using powder metallurgy||Authors:||Thein, M.A.
|Issue Date:||Nov-2003||Citation:||Thein, M.A., Gupta, M. (2003-11). Microstructural, physical, and mechanical characteristics of bulk nanocrystalline copper synthesised using powder metallurgy. Materials Science and Technology 19 (11) : 1473-1477. ScholarBank@NUS Repository. https://doi.org/10.1179/026708303225008059||Abstract:||In the present study, elemental Cu powder was mechanically milled to reduce the grain (crystalline) size to the nanorange (< 100 nm). The powder was consolidated by die cold compaction. Omitting the sintering process, the powder compacts of 10 h mechanically milled powder and elemental powder without mechanical milling (0 h mechanically milled) were hot extruded at different temperatures to maintain a crystallite size within the nanoregime. Characterisation revealed that samples with relatively lower grain size (63 nm/10 h mechanically milled) exhibited reduced density and ductility, similar dimensional stability, and significantly enhanced hardness, 0·2% yield strength, and ultimate tensile strength. Particular emphasis was placed on correlating the properties of the samples with their microstructural features.||Source Title:||Materials Science and Technology||URI:||http://scholarbank.nus.edu.sg/handle/10635/60757||ISSN:||02670836||DOI:||10.1179/026708303225008059|
|Appears in Collections:||Staff Publications|
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