Paper Title:
The Structure of Nb Obtained by Severe Plastic Deformation and its Thermal Stability
  Abstract

Evolution of structure of Nb subjected to high-pressure torsion (HPT) with various strain at cryogenic and room temperatures and further annealing in the temperature range of 100-7000C has been studied by transmission electron microscopy (TEM) and microhardness measurements. HPT in liquid nitrogen enables to obtain true nanocrystalline structure with crystallite sizes of about 75 nm and the record-breaking microhardness of 4800 MPa. The thermal stability of the structure obtained is analysed.

  Info
Periodical
Materials Science Forum (Volumes 667-669)
Edited by
Jing Tao Wang, Roberto B. Figueiredo and Terence G. Langdon
Pages
409-414
DOI
10.4028/www.scientific.net/MSF.667-669.409
Citation
V. V. Popov, E.N. Popova, A.V. Stolbovsky, V.P. Pilyugin, "The Structure of Nb Obtained by Severe Plastic Deformation and its Thermal Stability", Materials Science Forum, Vols. 667-669, pp. 409-414, 2011
Online since
December 2010
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