Properties of Nanocrystalline Aluminium Fabricated by Warm-Vacuum-Compaction Method

Wei Liu; Qiong Hua Zhou

doi:10.4028/www.scientific.net/AMR.299-300.82

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 299-300Properties of Nanocrystalline Aluminium Fabricated...

Properties of Nanocrystalline Aluminium Fabricated by Warm-Vacuum-Compaction Method

Abstract:

Nanocrystalline aluminium bulk material with average grain size of 25.2 nm was prepared by warm-vacuum-compaction method. The as-prepared nanocrystalline aluminium was characterized by X-ray diffraction (XRD), differential scanning calarmeutry analysis (DSC), thermogravimetric analysis (TG), and Microhardness test, respectively. The experimental results show that the average grain size and microstrain of the nanocrystalline aluminium are 25.2 nm and 0.018%, respectively. The melting point of as-prepared nanocrystalline aluminium is 918.9 K, which is lower than that of coarse-grained aluminium by 14 K. The endothermic value of nanocrystalline aluminium is 196.3J/g. The average microhardness of the as-prepared nanocrystalline aluminium is 1.65 GPa, which is 11 times higher than that of coarse-grained aluminium.

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Periodical:

Advanced Materials Research (Volumes 299-300)

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82-85

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https://doi.org/10.4028/www.scientific.net/AMR.299-300.82

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Online since:

July 2011

Authors:

Wei Liu, Qiong Hua Zhou

Keywords:

Microhardness, Nanocrystalline Aluminium, Thermal Analysis, Warm-Vacuum-Compaction, X-Ray Diffraction (XRD)

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