The Structure of Nb Obtained by Severe Plastic Deformation and its Thermal Stability

Vladimir V. Popov; E.N. Popova; A.V. Stolbovsky; V.P. Pilyugin

doi:10.4028/www.scientific.net/MSF.667-669.409

Paper Titles

The Influence of Texture and Grain Size on Compressive Deformation Behavior of Pure Mg through Equal-Channel Angular Processing
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Microstructural Evolution of Mg-4Nd Alloy Processed by High-Pressure Torsion
p.391

Developing the Technique of Severe Plastic Deformation Processing through High-Pressure Torsion
p.397

High-Temperature Severe Plastic Deformation of Ferritic Steel by Torsion
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The Structure of Nb Obtained by Severe Plastic Deformation and its Thermal Stability
p.409

Microstructural Evolution of Ultrafine-Grained Steel during Tandem Rolling Process
p.415

Microstructures and Tensile Properties of Maraging Steel Processed by Equal-Channel Angular Pressing
p.421

Stabilization of Lattice Defects in HPT-Deformed Palladium Hydride
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Microstructure and Properties of Nanostructured Zirconium Processed by High Pressure Torsion
p.433

HomeMaterials Science ForumMaterials Science Forum Vols. 667-669The Structure of Nb Obtained by Severe Plastic...

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.

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Periodical:

Materials Science Forum (Volumes 667-669)

Pages:

409-414

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.667-669.409

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Online since:

December 2010

Authors:

Vladimir V. Popov, E.N. Popova, A.V. Stolbovsky, V.P. Pilyugin

Keywords:

Grain Growth, Grain Refinement, High Pressure Torsion (HPT), Microhardness, Nanocrystalline Structure, TEM, Thermal Stability

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