Superplastic deformation of fine-grained AE42 and LAE442 magnesium alloys

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10389806" target="_blank" >RIV/00216208:11320/18:10389806 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.22226/2410-3535-2018-4-538-542" target="_blank" >https://doi.org/10.22226/2410-3535-2018-4-538-542</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.22226/2410-3535-2018-4-538-542" target="_blank" >10.22226/2410-3535-2018-4-538-542</a>

Result language

angličtina

Original language name

Superplastic deformation of fine-grained AE42 and LAE442 magnesium alloys

Original language description

In this paper, the possible superplastic behaviour of fine-grained magnesium alloys AE42 and LAE442 alloys was investigated and the first results of this research are shown. Two deformation temperatures and two strain rates were selected upon the initial measurement of thermal stability and dependence of m-parameter on strain rate and temperature. Evolution of m-parameter during the tensile tests was measured by means of periodical switching of the strain rate. The LAE442 alloy showed significantly higher elongations at the same deformation conditions as comparing to the AE42 alloy. The highest values of m-parameter in the last stage of deformation were measured at the temperature of 240 degrees C and strain rate of 10(-4) s(-1), regardless much higher grain growth comparing to deformation at 180 degrees C. Consequently, deformation of about 1.5 (350 %) and 1.3 (270 %) was measured for LAE442 and AE42 alloys, respectively. Higher values of m-parameter during the deformation and consequently higher elongation observed in LAE442 alloy were attributed to a combination of higher thermal stability and the positive effect of lithium on the activation of non-basal slip systems and diffusion.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project

<a href="/en/project/GB14-36566G" target="_blank" >GB14-36566G: Multidisciplinary research centre for advanced materials</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

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

Name of the periodical

Letters on Materials

ISSN

2218-5046

e-ISSN

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Volume of the periodical

8

Issue of the periodical within the volume

4

Country of publishing house

RU - RUSSIAN FEDERATION

Number of pages

5

Pages from-to

538-542

UT code for WoS article

000457554700006

EID of the result in the Scopus database

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