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dc.contributor.authorMukhtar, Aamir
dc.contributor.authorZhang, Deliang
dc.contributor.authorKong, Charlie
dc.contributor.authorMunroe, Paul
dc.coverage.spatialConference held at Auckland, New Zealanden_NZ
dc.date.accessioned2011-02-22T23:03:35Z
dc.date.available2011-02-22T23:03:35Z
dc.date.issued2009
dc.identifier.citationMukhtar, A., Zhang, D., Kong, C. & Munroe, P. (2009). Microstructure and thermal stability of nanostructured Cu-7.5vol.%Al₂O₃ composite powders produced by high energy mechanical milling. IOP Conference Series: Materials Science and Engineering, 4(1), 012005.en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/5084
dc.description.abstractNanostructured Cu-7.5vol.%Al₂O₃ composite powders were produced from a mixture of Cu powder and Al₂O₃ nanopowder using two routes of high energy mechanical milling. The milled composite powders were heat treated at 150, 300, 400 and 500°C for 1 hour, respectively, to determine the thermal stability of the microstructure and corresponding micohardness change of the powder particles as a function of the annealing temperature. For the nanocomposite powder produced with 12 hours of milling (Route 1), heat treatment at 150°C did not change the microstructure, increasing the annealing temperature from 150 to 500°C caused the Cu grain sizes to increase due to grain coarsening. For the composite powder produced with 24 hours milling (Route 2), the grain sizes of the Cu matrix also increased due to grain coarsening with increasing the annealing temperature from 150 to 500°C. Average microhardness decreased significantly for both the nanocomposite powders but the degree of grain size increase was smaller with increasing the annealing temperature from 400 to 500°C.en_NZ
dc.language.isoen
dc.publisherIOP Scienceen_NZ
dc.relation.urihttp://iopscience.iop.org/1757-899X/4/1/012005en_NZ
dc.subjectengineeringen_NZ
dc.subjectHigh energy mechanical millingen_NZ
dc.titleMicrostructure and thermal stability of nanostructured Cu-7.5vol.%Al₂O₃ composite powders produced by high energy mechanical millingen_NZ
dc.typeJournal Articleen_NZ
dc.identifier.doi10.1088/1757-899X/4/1/012005en_NZ
dc.relation.isPartOfProceedings of Processing, Microstructure and Performance Materialsen_NZ
pubs.begin-page1en_NZ
pubs.elements-id19516
pubs.end-page5en_NZ
pubs.finish-date2009-04-09en_NZ
pubs.place-of-publication(online)en_NZ
pubs.start-date2009-04-08en_NZ
pubs.volumeIOP Conference Series, Materials Science and Engineering, Volume 4en_NZ


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