Diffusion Processes in Early Stages of Precipitation in Mg-Gd and Mg- Tb Alloys

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10190376" target="_blank" >RIV/00216208:11320/13:10190376 - isvavai.cz</a>

Result on the web

<a href="http://www.scientific.net/DDF.333.51" target="_blank" >http://www.scientific.net/DDF.333.51</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/DDF.333.51" target="_blank" >10.4028/www.scientific.net/DDF.333.51</a>

Result language

angličtina

Original language name

Diffusion Processes in Early Stages of Precipitation in Mg-Gd and Mg- Tb Alloys

Original language description

Early stages of precipitation were investigated in solution treated binary Mg-Tb and Mg- Gd alloys. The supersaturated solid solution of Gd (or Tb) in Mg was formed by fast quenching of the alloys from solution treatment temperature. Decomposition of thesupersaturated solid solution and precipitation effects were investigated by positron lifetime spectroscopy combined with microhardness testing. During solution treatment at elevated temperature some thermal vacancies form pairs with solute atoms. In quenched samples free vacancies are quickly annealed out, while more stable vacancies bound to solute atoms remain in the sample and enhance the diffusivity of solutes. The hardness of solution treated Mg-Tb and Mg-Gd alloys aged at ambient temperature rises due to formation of small clusters of Tb and Gd atoms. Isochronal annealing of Mg-Tb and Mg-Gd alloys leads to precipitation of coherent ?'' phase, semicoherent ?' phase and incoherent ? phase particles. It was found that natural aging

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

JG - Metallurgy, metal materials

OECD FORD branch

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Project

<a href="/en/project/GAP108%2F10%2F0648" target="_blank" >GAP108/10/0648: Investigation of defects in icosahedral phases in Mg-alloys</a><br>

Continuities

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2013

Confidentiality

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

Name of the periodical

Defect and Diffusion Forum

ISSN

1012-0386

e-ISSN

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Volume of the periodical

333

Issue of the periodical within the volume

25 Jan 2013

Country of publishing house

CH - SWITZERLAND

Number of pages

10

Pages from-to

51-60

UT code for WoS article

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EID of the result in the Scopus database

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