Bathula, Sivaiah and Anandani, R. C. and Dhar, Ajay and Srivastava, A. K. (2012) Microstructural features and mechanical properties of Al 5083/SiCp metal matrix nanocomposites produced by high energy ball milling and spark plasma sintering. Materials Science and Engineering: A , 545. pp. 97-102. ISSN 0921-5093

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Abstract

Al 5083 alloy powder with 10 wt.% (similar to 8.43 vol.%) of silicon carbide (SiCp) nanoparticulates having size of similar to 20 nm were milled using a high-energy planetary ball mill to produce Al 5083/10 wt.% SiCp (Al 5083/SiCp) nanocomposite. Subsequently, the milled powders were consolidated and sintered by employing spark plasma sintering (SPS) technique in order to attain the near theoretical densification while retaining the nanostructure of Al 5083 matrix embedded with uniformly distributed SiCp. High resolution transmission microscopy (HR-TEM) analysis revealed the grain morphology and grain size of the Al 5083 matrix along with the interfacial microstructure between Al 5083 matrix and SiCp particulates. The crystallite size of ball milled Al 5083 matrix was observed to be similar to 25 nm and was coarsened up to 30 nm after rapid consolidation and sintering using SPS. Compressive strength and elastic modulus of Al 5083/SiCp metal matrix nanocomposites was significantly increased to that of the un-reinforced Al 5083 alloy. Nanoindentation measurements on these nanocomposites demonstrated the hardness of similar to 280 HV with an elastic modulus of 126 GPa.

Item Type:	Article
Additional Information:	copyright for this article belongs to M/s Elsevier
Subjects:	Materials Science Metallurgy & Metallurgical Engineering Nanoscience/ Nanotechnology
Divisions:	UNSPECIFIED
Depositing User:	Users 27 not found.
Date Deposited:	19 Aug 2026 11:08
Last Modified:	19 Aug 2026 11:08
URI:	https://npl.csircentral.net/id/eprint/3492

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