Title: Powder materials with ultrafine structure: strength and superplasticity

Authors: R.A. Andrievski

Addresses: Institute of New Chemical Problems, Russian Academy of Sciences, Chernogolovka, Moscow Region, 142432, Russia

Abstract: The peculiarities of ultrafine powder compaction and sintering are described in brief. This problem is linked with the development of materials with ultrafine structure. The strength and hardness of such Cu and Ni samples are reviewed. The possibility of superplastic deformation as applied to refractory compounds is discussed. Superplasticity has been revealed in Si₃N₄-TiB₂ materials with ultrafine structure. The influence of grain size on phase diagrams is also discussed.

Keywords: strength; nanocrystalline materials; superplasticity; ultrafine structure; ultrafine powders; powder compaction; sintering; copper; nickel; superplastic deformation; refractory compounds; grain size; phase diagrams.

DOI: 10.1504/IJMPT.1995.036450

International Journal of Materials and Product Technology, 1995 Vol.10 No.1/2, pp.181 - 192

Published online: 03 Nov 2010 *

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