Results 181 to 190 of about 1,740 (221)

Ultrasonic Rheocasting for Refinement of Mg Alloys Reinforced with LPSO Phase

Materials Science Forum, 2018
In this work, ultrasonic rheocasting was used to refine the microstructures of Mg alloys reinforced with long period stacking ordered (LPSO) phase. The semisolid slurries of Mg-Zn-Y and Mg-Ni-Y alloys were prepared by ultrasonic vibration (UV) and then formed by rheo-squeeze casting under high squeeze pressure (~ 400 MPa). The effects of UV and squeeze
Shu Lin Lü, Xiong Yang, Liang Yan Hao, Shu Sen Wu   +3 more
openaire   +1 more source

Microstructure and Properties of LPSO Phase Reinforced Mg Alloy Produced by Rheocasting

Solid State Phenomena, 2016
The long period stacking ordered (LPSO) phase reinforced Mg alloys have received many researches in recent years because of their excellent mechanical properties. However, the LPSO phase usually concentrates at the grain boundaries with a coarse network structure, which seriously deteriorates its strengthening effect.
Shu Lin Lü, Xiong Yang, Shu Sen Wu, Xiao Gang Fang, Jing Wang   +4 more
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Microstructure and High Damping Properties of Mg-Zn-Y Alloys Containing LPSO Phase and I Phase

Rare Metal Materials and Engineering, 2015
Abstract A high damping Mg-Zn-Y alloy containing LPSO phase and I phase was investigated. The microstructure of a high damping Mg80Y4Zn16 (at%) alloy was examined by optical microscopy (OM) and SEM. Furthermore, the differential thermal analysis (DTA) was used to analyze its phase transformation.
Wan Diqing, Li junjie, Yu Tian
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Unified Understanding of Strengthening Mechanisms Acting in Mg/LPSO Two-Phase Extruded Alloys with Varying LPSO Phase Volume Fraction

MATERIALS TRANSACTIONS, 2023
Koji Hagihara, Toko Tokunaga, Kazuki Yamamoto, Michiaki Yamasaki, Tsuyoshi Mayama, Takumi Shioyama, Yoshihito Kawamura, Takayoshi Nakano   +7 more
openaire   +1 more source

Microstructure and Mechanical Properties of Mg-Er-Zn Alloys with LPSO Phase

Materials Science Forum, 2017
As-cast Mg-3Er-xZn (x = 0, 0.5, 1 and 2 at.%) alloys were prepared by a cast ingot metallurgy process. The effect of Zn contents on the microstructure and phase constitution of the alloys was investigated by optical microscope (OM), scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD) and transmission ...
Shu Jing Cui, Hao Ran Geng, Xin Ying Teng, Xiang Wei Wu, Peng Jia, Chen Wu   +5 more
openaire   +1 more source

Influence of Second Phases on the Superplasticity of Mg-Tm-Y-CeMM Alloys Containing LPSO-Phases

Materials Science Forum, 2016
The effect of the nature of the second phases in extruded Mg-TM-Y-CeMM (TM refers to a transition metal) alloys reinforced by intermetallic MgRE (RE refers to a rare earth element) compounds and LPSO-phase on their superplasticity has been evaluated between 300 and 400°C at the strain rate of 10-4 s-1.
Pablo Pérez Zubiaur, Judith Medina, Gerardo Garcés, Paloma Adeva   +3 more
openaire   +1 more source

Deformation Behavior of Lpso Phase and Zn Accompanied by Kink Band Formation

2013
Deformation process of the LPSO phase DS crystal accompanied by the formation of deformation kink was investigated by dynamical observation and the features were compared to that in Zn single crystal. In both crystals the formation of deformation kinks were confirmed in specimens that were compressed along the direction parallel to the basal plane. The
Koji Hagihara, Yoshihiro Fukusumi, Michiaki Yamasaki, Ryosuke Matsumoto, Masahito Honnami, Hitoshi Izuno, Takayoshi Nakano, Yoshihito Kawamura   +7 more
openaire   +1 more source

Strengthening mechanisms in magnesium alloys containing ternary I, W and LPSO phases

Journal of Materials Science & Technology, 2018
Abstract This study was aimed at identifying underlying strengthening mechanisms and predicting the yield strength of as-extruded Mg-Zn-Y alloys with varying amounts of yttrium (Y) element. The addition of Y resulted in the formation of ternary I (Mg3YZn6), W (Mg3Y2Zn3) and LPSO (Mg12YZn) phases which subsequently reinforced alloys ZM31 + 0.3Y, ZM31 +
N. Tahreen, D.F. Zhang, F.S. Pan, X.Q. Jiang, D.Y. Li, D.L. Chen   +5 more
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Achieving ultra-high strength using densely ultra-fine LPSO phase

Journal of Materials Science & Technology, 2022
Changzheng Li, Huan Liu, Yunchang Xin, Bo Guan, Guangjie Huang, Peidong Wu, Qing Liu   +6 more
openaire   +1 more source

Modeling hydrolysis kinetics of dual phase α-Mg/LPSO alloys

International Journal of Hydrogen Energy, 2022
M. Legrée, J.-L. Bobet, F. Mauvy, J. Sabatier   +3 more
openaire   +1 more source