Microstructure Development and Ductility of Ultra-Fine Grained Mg-Gd Alloy Prepared by High Pressure Torsion

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F10%3A10069851" target="_blank" >RIV/00216208:11320/10:10069851 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Microstructure Development and Ductility of Ultra-Fine Grained Mg-Gd Alloy Prepared by High Pressure Torsion

Original language description

Lattice defects and thermal stability of ultra fine grained (UFG) Mg-Gd alloy prepared by high-pressure torsion (HPT) were investigated. Positron annihilation spectroscopy (PAS) was combined with TEM, XRD, microhardness (HV) and deformation tensile tests. HPT deformed Mg-Gd alloy exhibits UFG structure with mean grain size of 100 nm and a dense network of dislocations distributed uniformly throughout the whole sample. Recovery of dislocations takes place at relatively low temperatures, but it is not accompanied by grain growth up to 300 °C. Tensile tests performed at elevated temperatures showed that HPT-deformed alloy exhibits a superplastic behavior at 400 °C. Moreover, it was found that the precipitation sequence in HPT-deformed alloy differs from that in conventional coarse-grained material.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

<a href="/en/project/KAN300100801" target="_blank" >KAN300100801: Multifunctional bulk metallic materials with nanocrystalline and ultrafine-grained structure</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2010

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Materials Science Forum

ISSN

0255-5476

e-ISSN

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Volume of the periodical

633-634

Issue of the periodical within the volume

1

Country of publishing house

CH - SWITZERLAND

Number of pages

11

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

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