Results 71 to 80 of about 6,132 (254)

Effect of heat treatment on microstructure and mechanical properties of Mg-Gd-Y-Zn-Zr alloy

Journal of Materials Research and Technology
This paper examined the effects of heat treatment on the microstructure evolution and mechanical properties of the Mg-8Gd-3Y-1.5Zn-0.6Zr (VWZ832K) alloy. After solution treatment, it was discovered that the alloy's LPSO phase had altered from 18R-LPSO to
Xiaoya Chen, Dongzhen Wang, Quanan Li, Yi Xiong, Kaikai Tian, Peijun Chen   +5 more
doaj   +1 more source

Scanning transmission electron microscopy and atom probe tomography analysis of non-stoichiometry long-period-stacking-ordered structures in Mg-Ni-Y/Sm alloys

Journal of Magnesium and Alloys
The long-period-stacking-ordered (LPSO) structure affects the mechanical, corrosion and hydrolysis properties of Mg alloys. The current work employs high angle annular dark field-scanning transmission electron microscopy (HAADF-STEM) and atom probe ...
Yimeng Chen, Manuel Legrée, Jean-Louis Bobet, Alexander Kvit   +3 more
doaj   +1 more source

A review of Mg alloys containing long-period stacking ordered (LPSO) structures with insight into the application of friction stir processing

Journal of Materials Research and Technology, 2023
Owing to their excellent mechanical/functional properties, the lightweight magnesium alloys containing long-period stacking ordered (LPSO) structures have recently received a great deal of attention. In the present overview article, the atomic structures,
Mohammad Saleh Geshani, Parastoo Mahmoud Kalayeh, Amir Hossein Asadi, Hamed Mirzadeh, Mehdi Malekan, Massoud Emamy   +5 more
doaj   +1 more source

Orthogonal learning particle swarm optimization [PDF]

, 2010
Particle swarm optimization (PSO) relies on its learning strategy to guide its search direction. Traditionally, each particle utilizes its historical best experience and its neighborhood’s best experience through linear summation.
Li, Y., Shi, Y-H., Zhan, Z-H., Zhang, J.
core   +1 more source

Refinement of LPSO structure in Mg-Ni-Y alloys by ultrasonic treatment

Ultrasonics Sonochemistry, 2018
Effect of ultrasonic treatment (UT) on the microstructures and mechanical properties of Mg99.0-xNixY1.0 (x=0.5, 1.0, 1.5, at.%) alloys was investigated. With the increase of Ni content, the amount of eutectic structure, consisting of Mg, Mg2Ni phase and LPSO structure, increased while the mechanical properties decreased in as-cast alloys.
Xiong, Yang, Shusen, Wu, Shulin, Lü, Liangyan, Hao, Xiaogang, Fang   +4 more
openaire   +2 more sources

Transformation of long-period stacking ordered structures in Mg-Gd-Y-Zn alloys upon synergistic characterization of first-principles calculation and experiment and its effects on mechanical properties

Journal of Magnesium and Alloys
Based on experiments and first-principles calculations, the microstructures and mechanical properties of as-cast and solution treated Mg-10Gd-4Y-xZn-0.6Zr (x = 0, 1, 2, wt.%) alloys are investigated.
Mingyu Li, Guangzong Zhang, Siqi Yin, Changfeng Wang, Ying Fu, Chenyang Gu, Renguo Guan   +6 more
doaj   +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

Tuning the LPSO-dominated microstructure for strength increment of wire arc-directed energy deposited VWZ104K magnesium alloy

Review of Materials Research
Long-period stacking ordered (LPSO) phase endows Mg-Gd-Y-Zn-Zr magnesium alloys with improved mechanical property. Here, the Mg-10Gd-4Y-1Zn-0.5Zr (wt.%) alloy is fabricated by wire arc-directed energy deposition (WA-DED), and the microstructure dominated
Qifei Han, Na Wang, Ming Fan, Jiayuan Cui, Yueling Guo, Changmeng Liu, En-Hou Han   +6 more
doaj   +1 more source

Nano-steps in long-period stacking ordered structures for ductility asymmetry of a strong-textured Mg-Gd-Zn alloy

Materials & Design, 2021
Ductility asymmetry in extruded Mg alloys containing dense thin long-period stacking ordered (LPSO) plates was always ignored although with yield symmetry. Here, an extruded Mg97.3Gd2.1Zn0.6 alloy of
Qiang Yang, Shuhui Lv, Zixiang Yan, Xiru Hua, Xin Qiu, Jian Meng   +5 more
doaj   +1 more source

Investigations on microstructure and mechanical properties of cast Mg-Gd-Y-Zn-Zr-Nd alloy

Journal of Materials Research and Technology, 2023
Different solution treatments were carried out on the semi-continuously cast Mg-9.55Gd-2.27Y-1.28Zn-0.55Zr-0.11Nd (wt.%) alloy at temperatures of 480 °C, 500 °C, and 520 °C. It was found that the different solution treatment temperatures led to different
Cong Dang, Xiaoxu Dou, Jingfeng Wang, Di Yu, Jinxing Wang, Ruopeng Lu, Hua Hou, Yuhong Zhao   +7 more
doaj   +1 more source