Results 41 to 50 of about 1,740 (221)

Influence of the processing route on the mechanical properties at high temperatures of Mg-Ni-Y-RE alloys containing LPSO-phases [PDF]

, 2016
The mechanical properties at high temperatures of two Mg-Ni-Y-RE alloys prepared by conventional or powder metallurgy routes have been evaluated. All alloys exhibit high-strength up to 250°C but their strength depends more on the composition of the alloy
Adeva, Paloma, Garcés, Gerardo, Gonzalez Sanchez, Sergio, Pérez, Pablo   +3 more
core   +2 more sources

Phase stability of long-period stacking structures in Mg-Y-Zn: A first-principles study [PDF]

, 2012
The phase stability of the long periodic structures in Mg has been investigated at finite temperature by means of first-principles calculations. Free-energy calculation, including the lattice vibration effect, clearly reveals that 14H and 18R type long ...
Iikubo Satoshi, Matsuda Kensuke, Ohtani Hiroshi   +2 more
core   +2 more sources

Strain-rate dependence of deformation behavior of LPSO-phases

Materials Letters, 2018
Abstract This is the first report clarifying the influence of the strain rate on the deformation behavior of Mg-based long-period stacking ordered (LPSO) phases with 14H, 18R, and 10H structures. The flow stress by basal slip showed a weakly positive or negligible strain-rate dependence, while the flow stress accompanied by the formation of ...
Hagihara, Koji, Li, Zixuan, Yamasaki, Michiaki, Kawamura, Yoshihito, Nakano, Takayoshi   +4 more
openaire   +2 more sources

Elemental distribution within the long-period stacking ordered structure in a Mg-Gd-Zn-Mn alloy [PDF]

, 2017
High angle annular dark field scanning transmission electron microscope imaging and electron energy loss spectroscopy was used to elucidate the elemental distribution (Gd, Zn, Mn) within the long-period stacking ordered (LPSO) structure in a Mg-15Gd-0 ...
Hage, FS, Haigh, SJ, Li, J, Peng, L, Ramasse, QM, Schumacher, P, Wu, Y, Zhong, X   +7 more
core   +2 more sources

Characterization of Active Deformation Mechanisms in Mg Alloys with LPSO Phase

Acta Physica Polonica A, 2018
The WZ21 and the WZ72 magnesium alloys containing long period stacking ordered (LPSO) phase extruded with an extrusion ratio of 4:1 at 350C. The microstructure was analyzed by scanning electron microscopy using electron backscattered diffraction. Both alloys exhibit bimodal microstructure of the Mg matrix and elongated LPSO phase along the extrusion ...
Horváth, Klaudia, Drozdenko, Daria, Máthis, K., Garcés, Gerardo, Dobroň, P.   +4 more
openaire   +2 more sources

An atomistic simulation investigation on chip related phenomena in nanometric cutting of single crystal silicon at elevated temperatures [PDF]

, 2016
Nanometric cutting of single crystal silicon on different crystal orientations and at a wide range of temperatures (300-1500 K) was studied through molecular dynamics (MD) simulations using two sorts of interatomic potentials, an analytical bond order ...
Chavoshi, Saeed Zare, Luo, Xichun
core   +1 more source

Effect of heat treatment on microstructure and mechanical properties of Mg_97.5Gd_1.9Zn_0.6 alloy

Cailiao gongcheng, 2020
A ternary alloy strengthened by the phase with long period stacking ordered (LPSO) structure with composition of Mg97.5Gd1.9Zn0.6 (atom fraction/%) was prepared by conventional permanent mold casting.
ZHEN Rui, FANG Xin-xian, PI Jin-hong, XU Heng-yuan, WU Zhen   +4 more
doaj   +1 more source

Formation Process of Long-Period Stacking-Ordered Structures in Mg₉₇Zn₁Y₂ Alloy Comprising HCP and Cubic Phases Fabricated by High-Pressure High-Temperature Annealing

Metals, 2021
As-cast Mg97Zn1Y2 alloy consists of α-Mg matrix and 18R-type long-period stacking-ordered (LPSO) structures. We observed that the alloy undergoes a phase transformation to D03 superlattices and α-Mg matrix due to high-pressure high-temperature (HPHT ...
Atsuki Yokota, Masafumi Matsushita, Naruhito Geshi, Daiki Yamasaki, Toru Shinmei, Michiaki Yamasaki, Yoshihito Kawamura   +6 more
doaj   +1 more source

Kink boundaries and their role in dynamic recrystallisation of a Mg-Zn-Y alloy [PDF]

, 2019
An as-cast Mg94Zn2Y4 alloy has been subjected to compression and equal channel angular pressing separately; the resultant microstructure was characterised using scanning electron microscopy (SEM), transmission electron microscopy (TEM) and transmission ...
Chiu, Yu Lung, Ikeda, Ken ichi, Shi, Q., Wu, Jing   +3 more
core   +1 more source

Modeling and simulation of dynamic recrystallization for Mg/LPSO alloys based on multi-phase-field and dislocation-based crystal plasticity models

Nihon Kikai Gakkai ronbunshu, 2020
A dual-phase magnesium alloy consisting of the usual α-Mg phase and a new LPSO (Long-Period Stacking Ordered Structure) phase has been developed and expected for a next-generation structural material owing to its excellent mechanical properties.
Sho KUJIRAI, Kazuyuki SHIZAWA
doaj   +1 more source