Density functional theory (DFT) calculations were performed on AlxCyCoFeMnNi multi-principal element alloys (MPEAs) to understand the influence of Al and C on the stacking-fault energy (SFE). C addition to CoFeMnNi resulted in increased SFE, while it decreased in Al-alloyed CoFeMnNi. For experimental verification, Al0.26CyCoFeMnNi with 0, 1.37 and 2.70 at% C were designed by computational thermodynamics, produced by additive manufacturing (AM) and characterized by tensile tests and microstructure analysis. Twinning-induced plasticity (TWIP) was enhanced with increased C, which confirmed a decreased SFE. The combination of these methods provides a promising toolset for mechanism-oriented design of MPEAs with advanced mechanical properties.
%0 Journal Article
%1 Kies_SM_2020_Combined
%A Kies, Fabian
%A Ikeda, Yuji
%A Ewald, Simon
%A Schleifenbaum, Johannes H.
%A Hallstedt, Bengt
%A Körmann, Fritz
%A Haase, Christian
%D 2020
%J Scr. Mater.
%K myown
%P 366--371
%R 10.1016/j.scriptamat.2019.12.004
%T Combined Al and C alloying enables mechanism-oriented design of multi-principal element alloys: Ab initio calculations and experiments
%V 178
%X Density functional theory (DFT) calculations were performed on AlxCyCoFeMnNi multi-principal element alloys (MPEAs) to understand the influence of Al and C on the stacking-fault energy (SFE). C addition to CoFeMnNi resulted in increased SFE, while it decreased in Al-alloyed CoFeMnNi. For experimental verification, Al0.26CyCoFeMnNi with 0, 1.37 and 2.70 at% C were designed by computational thermodynamics, produced by additive manufacturing (AM) and characterized by tensile tests and microstructure analysis. Twinning-induced plasticity (TWIP) was enhanced with increased C, which confirmed a decreased SFE. The combination of these methods provides a promising toolset for mechanism-oriented design of MPEAs with advanced mechanical properties.
@article{Kies_SM_2020_Combined,
abstract = {Density functional theory (DFT) calculations were performed on AlxCyCoFeMnNi multi-principal element alloys (MPEAs) to understand the influence of Al and C on the stacking-fault energy (SFE). C addition to CoFeMnNi resulted in increased SFE, while it decreased in Al-alloyed CoFeMnNi. For experimental verification, Al0.26CyCoFeMnNi with 0, 1.37 and 2.70 at% C were designed by computational thermodynamics, produced by additive manufacturing (AM) and characterized by tensile tests and microstructure analysis. Twinning-induced plasticity (TWIP) was enhanced with increased C, which confirmed a decreased SFE. The combination of these methods provides a promising toolset for mechanism-oriented design of MPEAs with advanced mechanical properties.},
added-at = {2020-02-29T00:07:54.000+0100},
author = {Kies, Fabian and Ikeda, Yuji and Ewald, Simon and Schleifenbaum, Johannes H. and Hallstedt, Bengt and Körmann, Fritz and Haase, Christian},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2df3cdcd0cb2b1063818047d191a7249b/yujiikeda},
doi = {10.1016/j.scriptamat.2019.12.004},
file = {:Kies_SM_2020_Combined.pdf:PDF},
interhash = {eb53fd332214a2396b3622312782525b},
intrahash = {df3cdcd0cb2b1063818047d191a7249b},
issn = {1359-6462},
journal = {Scr. Mater.},
keywords = {myown},
pages = {366--371},
timestamp = {2020-02-28T23:07:54.000+0100},
title = {Combined Al and C alloying enables mechanism-oriented design of multi-principal element alloys: Ab initio calculations and experiments},
volume = 178,
year = 2020
}
