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- W2370295836 abstract "Nanocrystalline Al( nc Al) bulks with average grain sizes of 90-123 nm were prepared by pressing Al nanopowders which were produced by the flow-levitation method.The effect of the hot-pressing temperature and pressure on microstructure and microhardness of the nc Al was analyzed by XRD,SEM and microhardness test.The results indicate that the microhardness of the nc Al is from 0.8 to 1.98GPa,depending on the density,grain size,microstrain and structure of alumina.The microhardness firstly increases and then decreases with increasing the hot-pressing temperature,while it increases at a slower rate after a fast increase with increasing the hot-pressing pressure.In different hot-pressing temperatures and pressures,the different mechanism dominates the densification process of the nc Al.Different from the high-density nc Al bulks,the bulks with lower density obviously show an indentation size effect." @default.
- W2370295836 created "2016-06-24" @default.
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- W2370295836 date "2014-01-01" @default.
- W2370295836 modified "2023-09-23" @default.
- W2370295836 title "Microstructure and microhardness of nanocrystalline Al prepared by hot pressing" @default.
- W2370295836 hasPublicationYear "2014" @default.
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