Ductility improvement of Mg alloys by solid solution: Ab initio modeling, synthesis and mechanical properties
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F14%3A00435453" target="_blank" >RIV/68081723:_____/14:00435453 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.actamat.2014.02.011" target="_blank" >http://dx.doi.org/10.1016/j.actamat.2014.02.011</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.actamat.2014.02.011" target="_blank" >10.1016/j.actamat.2014.02.011</a>
Alternative languages
Result language
angličtina
Original language name
Ductility improvement of Mg alloys by solid solution: Ab initio modeling, synthesis and mechanical properties
Original language description
The I-1 intrinsic stacking fault energy (I-1 SFE) serves as an alloy design parameter for ductilizing Mg alloys. In view of this effect we have conducted quantum mechanical calculations for Mg15X solid-solution crystals (X=Dy, Er, Gd, Ho, Lu, Sc, Tb, Tm,Nd, Pr, Be, Ti, Zr, Zn, Tc, Re, Co, Ru, Os, Tl). We find that Y, Sc and all studied lanthanides reduce the I-1 SFE and render hexagonal closed-packed (hcp) and double hcp phases thermodynamically, structurally and elastically similar. Synthesis, experimental testing and characterization of some of the predicted key alloys (Mg-3Ho, Mg-3Er, Mg-3Tb, Mg-3Dy) indeed confirm reduced I-1 SFEs and significantly improved room-temperature ductility by up to 4-5 times relative to pure Mg, a finding that is attributed to the higher activity of non-basal dislocation slip.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Acta Materialia
ISSN
1359-6454
e-ISSN
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Volume of the periodical
70
Issue of the periodical within the volume
MAY
Country of publishing house
GB - UNITED KINGDOM
Number of pages
13
Pages from-to
92-104
UT code for WoS article
000335636500009
EID of the result in the Scopus database
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