Microscale and Mesoscale Crystallographic Textures of Nanocrystalline Ni-Based Electrodeposits
Identifieur interne : 006920 ( Main/Exploration ); précédent : 006919; suivant : 006921Microscale and Mesoscale Crystallographic Textures of Nanocrystalline Ni-Based Electrodeposits
Auteurs : P. Cizek [Australie] ; M. R. Barnett [Australie] ; M. D. Nave [Australie] ; E. F. Rauch [France] ; R. Balasubramaniam [Inde]Source :
- Metallurgical and materials transactions. A, Physical metallurgy and materials science [ 1073-5623 ] ; 2011.
Descripteurs français
- Pascal (Inist)
English descriptors
Abstract
The microscale and mesoscale crystallographic textures observed in nanocrystalline Ni, Ni-20 pct Fe, and Ni-50 pct Fe electrodeposits are described. The nanosized grains are arranged in coarse mesoscale colonies. In the as-deposited state, the bulk texture of the Ni-20 pct Fe alloy displays a dominant ?001? fiber parallel to the macroscopic deposition direction (DD). The grains are elongated along the ?001? crystal lattice direction, which is mostly parallel to the local DD, producing a well-defined ?001?//DD fiber microtexture on a local scale. The grain misorientation histograms show some content of low-angle boundaries, frequently associated with the presence of grain clusters, and are dominated by high-angle boundaries with a possible enhanced frequency of Σ5 and Σ7 coincident site lattice boundaries and a significant content of Σ3 twin boundaries. For all three alloys, the coarsened grains, obtained by annealing, within the mesoscale colonies show a fiber mesotexture characterized by a (111) axis approximately perpendicular to the colony hemispherical growth surface (parallel to the local DD). It is surmised that a similar "cobblestone" mesotexture with a (001) fiber axis already exists in the as-received state, as previously proposed by a number of the present authors and as supported by the results on the Ni-20 pct Fe alloy presented here.
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Balasubramaniam</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Department of Materials and Metallurgical Engineering. Indian Institute of Technology.</s1><s2>Kanpur 208016</s2><s3>IND</s3><sZ>5 aut.</sZ></inist:fA14><country>Inde</country><wicri:noRegion>Department of Materials and Metallurgical Engineering. Indian Institute of Technology.</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Metallurgical and materials transactions. A, Physical metallurgy and materials science</title><title level="j" type="abbreviated">Metall. mater. trans., A Phys. metall. mater. sci.</title><idno type="ISSN">1073-5623</idno><imprint><date when="2011">2011</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Metallurgical and materials transactions. A, Physical metallurgy and materials science</title><title level="j" type="abbreviated">Metall. mater. trans., A Phys. metall. mater. sci.</title><idno type="ISSN">1073-5623</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Electrodeposition</term><term>Microstructure</term><term>Nanocrystal</term><term>Surface treatment</term><term>Texture</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Microstructure</term><term>Texture</term><term>Nanocristal</term><term>Dépôt électrolytique</term><term>Traitement surface</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The microscale and mesoscale crystallographic textures observed in nanocrystalline Ni, Ni-20 pct Fe, and Ni-50 pct Fe electrodeposits are described. The nanosized grains are arranged in coarse mesoscale colonies. In the as-deposited state, the bulk texture of the Ni-20 pct Fe alloy displays a dominant ?001? fiber parallel to the macroscopic deposition direction (DD). The grains are elongated along the ?001? crystal lattice direction, which is mostly parallel to the local DD, producing a well-defined ?001?//DD fiber microtexture on a local scale. The grain misorientation histograms show some content of low-angle boundaries, frequently associated with the presence of grain clusters, and are dominated by high-angle boundaries with a possible enhanced frequency of Σ5 and Σ7 coincident site lattice boundaries and a significant content of Σ3 twin boundaries. For all three alloys, the coarsened grains, obtained by annealing, within the mesoscale colonies show a fiber mesotexture characterized by a (111) axis approximately perpendicular to the colony hemispherical growth surface (parallel to the local DD). It is surmised that a similar "cobblestone" mesotexture with a (001) fiber axis already exists in the as-received state, as previously proposed by a number of the present authors and as supported by the results on the Ni-20 pct Fe alloy presented here.</div></front></TEI><affiliations><list><country><li>Australie</li><li>France</li><li>Inde</li></country></list><tree><country name="Australie"><noRegion><name sortKey="Cizek, P" sort="Cizek, P" uniqKey="Cizek P" first="P." last="Cizek">P. Cizek</name></noRegion><name sortKey="Barnett, M R" sort="Barnett, M R" uniqKey="Barnett M" first="M. R." last="Barnett">M. R. Barnett</name><name sortKey="Nave, M D" sort="Nave, M D" uniqKey="Nave M" first="M. D." last="Nave">M. D. Nave</name></country><country name="France"><noRegion><name sortKey="Rauch, E F" sort="Rauch, E F" uniqKey="Rauch E" first="E. F." last="Rauch">E. F. Rauch</name></noRegion></country><country name="Inde"><noRegion><name sortKey="Balasubramaniam, R" sort="Balasubramaniam, R" uniqKey="Balasubramaniam R" first="R." last="Balasubramaniam">R. Balasubramaniam</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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