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Microstructure and functional properties of micro- and nanostructure metal composites obtained by diffusion welding and rolling of multilayer packages

Abstract

Multilayered nanostructure composites of Cu/Fe, Cu/Nb, and Cu/(Nb/NbTi) with an ≤10 nm the average thickness of individual layers mechanical and superconducting properties which are implemented immediately after rolling, and micro- and nanostructure composites of Ni/Al, Ti/Ni, and (Cu/Nb)/Cu12Sn functional properties which, in contrast to the first, are manifested after rolling and heat treatment were investigated. Composites of (Cu/Nb)/Cu12Sn in final form were a multilayer tape of superconducting compound Nb{sub 3}Sn. Welding of stacks carried by heat treatment under pressure and rolling mill in a vacuum with heating to 900-950°C and large (∼30%) compression in a single pass. The microstructure was investigated by scanning electron microscopy and X-ray analysis. For superconducting composites critical current density and upper critical magnetic field were measured. Shown that the pinning of superconducting vortices in alloys of NbTi are occurred at interlayer Nb- NbTi boundaries. Change in hardness and strength of multilayer composites under rolling deformation is described by the expression of the Hall-Petch relationship, in which instead of the grain size appeared thick of layers. Key words: multilayered composite, micro- and nanostructure, NbTi alloy, superconducting compound, rolling, heat treatment, the superconducting properties, hardness, strength, superconducting vortices, the Hall-Petch expression.
Authors:
Korzhov, Valery P.; Karpov, Michael I., E-mail: korzhov@issp.ac.ru [1] 
  1. Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka (Russian Federation)
Publication Date:
Jul 01, 2011
Product Type:
Journal Article
Resource Relation:
Journal Name: Materials, methods and technologies (CD-ROM); Journal Volume: 5; Journal Issue: 2; Other Information: 17 refs., 33 figs., 7 tabs.
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; ALLOYS; AMINO ACIDS; CRITICAL CURRENT; DIFFUSION WELDING; GRAIN SIZE; HARDNESS; HEAT TREATMENTS; HIGH ROOMS; LAYERS; MAGNETIC FIELDS; METALS; NANOSTRUCTURES; ROLLING; SCANNING ELECTRON MICROSCOPY; SUPERCONDUCTING COMPOSITES; THICKNESS; X RADIATION
OSTI ID:
22286509
Country of Origin:
Bulgaria
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 1313-2539; TRN: BG1400572107942
Availability:
Available http://www.scientific-publications.net/download/materials-methods-and-technologies-2011-2.pdf
Submitting Site:
INIS
Size:
page(s) 212-245
Announcement Date:
Dec 30, 2014

Citation Formats

Korzhov, Valery P., and Karpov, Michael I., E-mail: korzhov@issp.ac.ru. Microstructure and functional properties of micro- and nanostructure metal composites obtained by diffusion welding and rolling of multilayer packages. Bulgaria: N. p., 2011. Web.
Korzhov, Valery P., & Karpov, Michael I., E-mail: korzhov@issp.ac.ru. Microstructure and functional properties of micro- and nanostructure metal composites obtained by diffusion welding and rolling of multilayer packages. Bulgaria.
Korzhov, Valery P., and Karpov, Michael I., E-mail: korzhov@issp.ac.ru. 2011. "Microstructure and functional properties of micro- and nanostructure metal composites obtained by diffusion welding and rolling of multilayer packages." Bulgaria.
@misc{etde_22286509,
title = {Microstructure and functional properties of micro- and nanostructure metal composites obtained by diffusion welding and rolling of multilayer packages}
author = {Korzhov, Valery P., and Karpov, Michael I., E-mail: korzhov@issp.ac.ru}
abstractNote = {Multilayered nanostructure composites of Cu/Fe, Cu/Nb, and Cu/(Nb/NbTi) with an ≤10 nm the average thickness of individual layers mechanical and superconducting properties which are implemented immediately after rolling, and micro- and nanostructure composites of Ni/Al, Ti/Ni, and (Cu/Nb)/Cu12Sn functional properties which, in contrast to the first, are manifested after rolling and heat treatment were investigated. Composites of (Cu/Nb)/Cu12Sn in final form were a multilayer tape of superconducting compound Nb{sub 3}Sn. Welding of stacks carried by heat treatment under pressure and rolling mill in a vacuum with heating to 900-950°C and large (∼30%) compression in a single pass. The microstructure was investigated by scanning electron microscopy and X-ray analysis. For superconducting composites critical current density and upper critical magnetic field were measured. Shown that the pinning of superconducting vortices in alloys of NbTi are occurred at interlayer Nb- NbTi boundaries. Change in hardness and strength of multilayer composites under rolling deformation is described by the expression of the Hall-Petch relationship, in which instead of the grain size appeared thick of layers. Key words: multilayered composite, micro- and nanostructure, NbTi alloy, superconducting compound, rolling, heat treatment, the superconducting properties, hardness, strength, superconducting vortices, the Hall-Petch expression.}
journal = {Materials, methods and technologies (CD-ROM)}
issue = {2}
volume = {5}
journal type = {AC}
place = {Bulgaria}
year = {2011}
month = {Jul}
}