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Synthesis, microstructure and mechanical properties of Al 2 O 3 reinforced Ni 3 Al matrix composite
Department of Metallurgical and Materials Engineering, University of Engineering and Technology, Lahore.ORCID-id: 0000-0003-4888-6237
2009 (Engelska)Ingår i: Materials Science & Engineering: A, ISSN 0921-5093, E-ISSN 1873-4936, Vol. 499, nr 1-2, s. 415-420Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

A new method to synthesize alumina reinforced Ni3Al intermetallic matrix composites has been described. The powder mixture of nickel and aluminium was mechanically alloyed. The powder mixture was excessively heated during mechanical alloying and then exposed to atmosphere for oxidation. The oxidized powder mixture was transformed into alumina reinforced nickel aluminide matrix composite on subsequent pulse current processing. Alumina reinforcements were generated in the nickel aluminide matrix by in situ precipitation. The microstructure of the composite showed that the alumina reinforcements were 50–150 nm in size. The fine alumina reinforcements were homogeneously distributed in the matrix phase. The mechanical properties of the alumina reinforced nickel aluminide matrix composite fairly exceeded the nickel aluminide alloys. This novel synthesis approach allowed the rapid and facile production of high strength alumina reinforced Ni3Al matrix composites.

Ort, förlag, år, upplaga, sidor
2009. Vol. 499, nr 1-2, s. 415-420
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Materialteknik
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URN: urn:nbn:se:ltu:diva-4674DOI: 10.1016/j.msea.2008.09.005Lokalt ID: 2a80f387-ca06-4aaa-a20f-20788c8782c7OAI: oai:DiVA.org:ltu-4674DiVA, id: diva2:977548
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Upprättat; 2009; 20150416 (farakh)Tillgänglig från: 2016-09-29 Skapad: 2016-09-29 Senast uppdaterad: 2017-11-24Bibliografiskt granskad

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