Excellent superplastic properties achieved in Mg-4Y-3RE alloy in high strain rate regime

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10423327" target="_blank" >RIV/00216208:11320/20:10423327 - isvavai.cz</a>

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=qEIAMLno2X" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=qEIAMLno2X</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.msea.2020.139314" target="_blank" >10.1016/j.msea.2020.139314</a>

Result language

angličtina

Original language name

Excellent superplastic properties achieved in Mg-4Y-3RE alloy in high strain rate regime

Original language description

This study is focused on high strain rate superplasticity of commercial magnesium alloy Mg-4Y-3RE (WE43) in ultrafine-grained condition prepared by equal channel angular pressing (ECAP). Attaining microstructure with the average grain size of similar to 340 nm and high density of secondary phase particles provided a possibility to significantly decrease temperature during the deformation at strain rates of 10(-2 )s(-1) and 10(-1) s(-1) in comparison with previous studies. Consequently, extent of negative effect of grain growth was partially suppressed and the investigated alloy did exhibit exceptionally high deformability with a maximum elongation of similar to 1230% at strain rate of 10(-2) s(-1) and at two temperatures: 350 degrees C and 400 degrees C. Increase in the strain rate to 10(-1) s(-1) resulted in maximum elongation of similar to 1000% at the temperature of 400 degrees C. The microstructural analysis after the deformation showed that the microstructure was fine-grained even after large deformation and plasticity-controlled growth of cavities did occur only at the temperature of 450 degrees C. The optimization of ECAP processing resulted in very weak texture and, therefore, the deformability should be more isotropic in comparison with strongly textured materials usually investigated in this regard.

Czech name

—

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

—

OECD FORD branch

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

Project

<a href="/en/project/GA19-00270S" target="_blank" >GA19-00270S: Enhancement of mechanical properties of ultra-fine grained magnesium alloys through controlled texture</a><br>

Continuities

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

Publication year

2020

Confidentiality

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

Name of the periodical

Materials Science &amp; Engineering A: Structural Materials: Properties, Microstructure and Processing

ISSN

0921-5093

e-ISSN

—

Volume of the periodical

784

Issue of the periodical within the volume

duben

Country of publishing house

CH - SWITZERLAND

Number of pages

7

Pages from-to

139314

UT code for WoS article

000531017900011

EID of the result in the Scopus database

2-s2.0-85082862888