The temperature effect on the plastic deformation of the Mg88Zn7Y5 alloy with LPSO phase studied by in-situ synchrotron radiation diffraction

Published on Nov 1, 2021in Intermetallics3.398
· DOI :10.1016/J.INTERMET.2021.107321
Klaudia Horváth Fekete2
Estimated H-index: 2
Gergely Farkas9
Estimated H-index: 9
+ 5 AuthorsKristián Máthis19
Estimated H-index: 19
#1Hidetoshi Somekawa (National Institute for Materials Science)H-Index: 32
#2Yuto Nakasuji (Dodai: Doshisha University)H-Index: 1
Last. Yoshihito Kawamura (Kumamoto University)H-Index: 70
view all 6 authors...
Abstract The effect of the volume fraction of the long periodic stacking ordered (LPSO) phase on elevated temperature compressive deformation behavior is investigated using four types of Mg–Y–Zn alloys (Mg-0.4Y-0.2Zn, Mg–2Y–1Zn, Mg–5Y-2.5Zn, Mg–9Y–6Zn, where the numbers indicate at.%) produced by casting. The LPSO phase volume fraction is found to increase with increase in the concentrations of Y and Zn. The results obtained from compression tests at elevated temperatures reveal that the respons...
8 CitationsSource
#1D.H. Qin (USTB: University of Science and Technology Beijing)H-Index: 1
#2Man Wang (USTB: University of Science and Technology Beijing)H-Index: 14
Last. Z.H. Sun (USTB: University of Science and Technology Beijing)H-Index: 1
view all 6 authors...
Abstract The interaction between dynamic recrystallization (DRX) and texture evolution of AZ80 magnesium alloy during hot deformation was investigated by EBSD analysis. A series of compression experiments along extrusion (ED) and radius (RD) direction were carried out on the as-extruded AZ80 magnesium alloy with 10 1 ‾ 0 > //ED fiber texture at 200–300 °C. The results show that there are a more homogeneous microstructure and a stronger softening trend on the true stress-strain curves in ED than ...
13 CitationsSource
#1Klaudia Horváth Fekete (Charles University in Prague)H-Index: 2
#2Daria Drozdenko (Charles University in Prague)H-Index: 10
Last. Patrik Dobroň (Charles University in Prague)H-Index: 14
view all 8 authors...
Abstract The compressive deformation behavior of the extruded WZ42 (Mg98.5Y1Zn0.5 in at.%) magnesium alloy containing a low amount of long-period stacking ordered (LPSO) phase was studied by in-situ synchrotron radiation diffraction technique. Tests were conducted at temperatures between room temperature and 350 °C. Detailed microstructure investigation was provided by scanning electron microscopy, particularly the backscattered electron imaging and electron backscatter diffraction technique. Th...
11 CitationsSource
#1B.Q. Shi (FOSU: Foshan University)H-Index: 1
#2L.Y. Zhao (FOSU: Foshan University)H-Index: 1
Last. Wei Ke (CAS: Chinese Academy of Sciences)H-Index: 14
view all 8 authors...
Abstract A Mg-2.1Y-0.5Zn-0.6Cu-0.1Zr (WZC200, in at. %) alloy was developed and conducted to extrusion process to refine the grains as well as LPSO structure, aiming to investigate the mechanical behaviors at ambient and elevated temperatures and their relations with microstructures. A 14H-LPSO structure with stacking sequence of ABCBCACACACBCBA, consisting of twin-related building blocks with a novel CBCA-type, was revealed in the solution-treated WZC200 alloy. Fully recrystallized microstructu...
5 CitationsSource
#1Sarkis GavrasH-Index: 1
#2Su-Ming Zhu (RMIT: RMIT University)H-Index: 31
Last. Hajo DieringaH-Index: 21
view all 5 authors...
In addition to AZ- and AM-series magnesium alloys, which are mainly used at ambient temperature, there are also die-cast magnesium alloys developed for use at elevated temperatures. This paper examines the compressive creep resistance of several aluminium-containing magnesium high-pressure die-cast alloys, including the commercially available AE42, AE44-2, AE44-4, MRI230D alloys and newly developed DieMag series, i.e. DieMag211, DieMag422 and DieMag633. Compressive creep is the common load case ...
5 CitationsSource
#1Koji Hagihara (Osaka University)H-Index: 28
#2Michiaki Yamasaki (Kumamoto University)H-Index: 43
Last. Takayoshi Nakano (Osaka University)H-Index: 51
view all 4 authors...
Abstract The mechanical properties of the Mg-based LPSO-phase are expected to be strongly affected by the microstructure due to its anisotropic crystal structure. However, the fine details have not been sufficiently understood yet. This study first clarified the detailed microstructural factors that govern the strength of the LPSO-phase by examining alloys with microstructures that were significantly varied via directional solidification and extrusion processes. Refining the microstructure is si...
19 CitationsSource
#1Mohammad Hossein Barezban (UT: University of Tehran)H-Index: 2
#2Hamed Mirzadeh (UT: University of Tehran)H-Index: 38
Last. R. Mahmudi (UT: University of Tehran)H-Index: 47
view all 4 authors...
Abstract Constitutive behaviors of the newly developed Mg-Gd alloys were studied to make it possible to reveal the effect of Gd addition on the high-temperature deformation behavior of magnesium. It was found that 0.5 wt% Gd is not adequate to increase the flow stress level. In contrast, in the case of 1.5 wt% Gd addition, the level of flow stress increased significantly due to the presence of enough solute Gd atoms. Based on the rigorous constitutive analysis, and by the aid of creep theories, ...
39 CitationsSource
#1Koji Hagihara (Osaka University)H-Index: 28
#2Zixuan Li (Osaka University)H-Index: 2
Last. Takayoshi Nakano (Osaka University)H-Index: 51
view all 5 authors...
Abstract The unusual increase in the strength by extrusion is a unique feature of recently developed Mg alloys containing the LPSO phase. In this study, we first elucidated the detailed mechanisms that induce this drastic strengthening. The dependencies of the deformation behavior of a Mg88Zn4Y7 extruded alloy, which contains ∼86-vol% LPSO phase, on the temperature, loading orientation, and extrusion ratio were examined. It was found that the yield stress of the alloy is drastically increased by...
84 CitationsSource
#1Gonzales Garcés (CSIC: Spanish National Research Council)H-Index: 1
#2K. Máthis (Charles University in Prague)H-Index: 8
Last. Paloma Adeva (CSIC: Spanish National Research Council)H-Index: 26
view all 10 authors...
Abstract The effect of the orientation of the non-recrystallized grains (non-DRX) and the LPSO phase on plasticity in extruded MgY2Zn1 alloy with a bimodal grain structure have been studied in-situ using the combination of synchrotron diffraction and acoustic emission techniques during compression tests. The adaptive sequential k-means (ASK) procedure was applied to analyze the acoustic emission signal. This method can successful separate the signal for each possible deformation systems. Combini...
40 CitationsSource
#1Klaudia Horváth (Charles University in Prague)H-Index: 7
#2Daria Drozdenko (Charles University in Prague)H-Index: 10
Last. Patrik Dobroň (Charles University in Prague)H-Index: 14
view all 7 authors...
The Mg–Y–Zn alloys with different contents of alloying elements are extruded at an extrusion ratio of 4:1 at 350 °C. The microstructure of the alloys is of an inhomogeneous character showing fine grains produced due to dynamic recrystallization and coarse original grains elongated along the extrusion direction (ED). Moreover, Y and Zn form a long-period stacking-ordered (LPSO) phase whose volume fraction increases with their increasing content in the alloy. All investigated alloys exhibit distin...
8 CitationsSource
Cited By1
Deformation mechanisms in extruded Mg-Y-Zn alloys with different volume fractions of the long-period stacking ordered (LPSO) structure have been investigated during cyclic loading, i.e., compression followed by unloading and reverse tensile loading. Electron backscattered diffraction (EBSD) and in situ neutron diffraction (ND) techniques are used to determine strain path dependence of the deformation mechanisms. The twinning-detwinning mechanism operated in the α-Mg phase is of key importance fo...
2 CitationsSource