Short-range order clusters in the long-period stacking/order phases with an intrinsic-I type stacking fault in Mg-Co-Y alloys

K Guan, M Egami, D Egusa, H Kimizuka, M Yamasaki… - Scripta Materialia, 2022 - Elsevier
We have investigated short-range order (SRO) solute clusters in the long-period
stacking/order (LPSO) phases with an intrinsic-I (I 1) type stacking faults (SFs), which have …

The γ” Phase in Mg-RE-TM Alloys: A Review on the Structure and Stability of the γ” Phase and Its Effect on Mechanical Properties

Z Liu, Z Pei, N Zhou, K Zheng, B Chen - Metals, 2023 - mdpi.com
In magnesium–rare earth–transition metal (Mg-RE-TM) alloys, the γ” phase (with a
hexagonal structure with the space group P 6¯ 2m) is a critical strengthening phase that can …

[HTML][HTML] Density functional theory study of solute cluster growth processes in Mg-Y-Zn LPSO alloys

M Itakura, M Yamaguchi, D Egusa, E Abe - Acta Materialia, 2021 - Elsevier
Solute clusters in long period stacking order (LPSO) alloys play a key role in their
idiosyncratic plastic behavior, for example kink formation and kink strengthening. Identifying …

Phase equilibria of long-period stacking ordered phase in the ternary Mg-Y-Al alloys

Y Chen, Q Li, Y Li, W Zheng, J Wang, X Zeng - Journal of Materials Science …, 2022 - Elsevier
Phase equilibria focusing on the long-period stacking ordered (LPSO) phases have been
experimentally investigated in the Mg-Y-Al alloys. The microstructures of the eleven …

Chemical interactions of solute atoms during L12 cluster formation in Mg–Zn–Gd alloys with long-period stacking ordered structure

K Ninomiya, K Itamoto, H Setoyama, D Egusa… - Journal of Alloys and …, 2022 - Elsevier
Magnesium-based alloys containing transition metal (TM) and rare-earth (RE) atoms form L1
2-type TM 6 RE 8 clusters, which are regularly arranged into long-period stacking ordered …

[HTML][HTML] Thermodynamic modelling for the long-period stacking ordered phase in Mg–Y–Al system: Construction and application

Y Chen, M Yu, J Wang, Q Li, W Zheng, J Li, X Zeng - Materials & Design, 2023 - Elsevier
An adequate thermodynamic model is required for describing the long-period stacking
ordered (LPSO) phase because previously developed models cannot account for the …

Recovery features of kink boundaries upon post-annealing of a hot-extruded Mg-Zn-Y alloy

D Egusa, K Inoue, Y Nagai, E Abe - Materials Characterization, 2021 - Elsevier
We have investigated a post-annealing effect on microscopic structural changes of kink
boundaries (KBs), which have been initially introduced by a hot-extrusion of an Mg-Zn-Y …

Quantitative X-ray diffraction analysis of solute-enriched stacking faults in hcp-Mg alloys based on peak asymmetry analysis

D Egusa, R Manabe, T Kawasaki, S Harjo… - Materials Today …, 2022 - Elsevier
Based on X-ray diffraction analysis we attempt to quantify a volume fraction of stacking
faults, which are essentially enriched by solute elements (solute-enriched stacking faults; …

Investigation of the Electronic Structure of the Mg99. 2Zn0. 2Y0. 6 Alloy Using X-ray Photoelectron Spectroscopy

H Miyazaki, T Akatsuka, K Kimura, D Egusa… - Materials …, 2023 - jstage.jst.go.jp
We investigated the electronic structure of the Mg 99.2 Zn 0.2 Y 0.6 alloy using hard and soft
X-ray photoemission spectroscopy and electronic band structure calculations to understand …

Anomalous Local Lattice Softening around Kink Boundaries in a Mille-Feuille Structured Dilute Mg–Zn–Y Alloy

Y Urakawa, D Egusa, M Itakura, E Abe - Materials Transactions, 2023 - jstage.jst.go.jp
We have evaluated local elastic properties at kink boundaries in dilute Mg–Zn–Y alloys
based on scanning transmission electron microscopy (STEM), first-principles calculations …