The role of long-period stacking ordered phases in the deformation behavior of a strong textured Mg-Zn-Gd-Y-Zr alloy sheet processed by hot extrusion

2019 ◽  
Vol 750 ◽  
pp. 31-39 ◽  
Author(s):  
Tao Chen ◽  
Zhiyong Chen ◽  
Jianbo Shao ◽  
Renke Wang ◽  
Longhui Mao ◽  
...  
Keyword(s):  
Deformation Behavior ◽  
Hot Extrusion ◽  
Alloy Sheet ◽  
Long Period ◽  
Ordered Phases ◽  
Zr Alloy

scholarly journals The Role of Long Period Stacking Ordered Phase in Dynamic Recrystallization of a Mg–Gd–Y–Zn–Zr Alloy during Multi-Directional Forging Process

Materials ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3290
Author(s):  
Huiling Liu ◽  
Yingze Meng ◽  
Huisheng Yu ◽  
Wenlong Xu ◽  
Siyang Zhang ◽  
...  
Keyword(s):  
Dynamic Recrystallization ◽  
Nucleation Site ◽  
Nucleation Mechanism ◽  
Forging Process ◽  
Lpso Phase ◽  
Long Period ◽  
Texture Intensity ◽  
Uniform Microstructure ◽  
Zr Alloy

The Mg–Gd–Y–Zn–Zr alloy containing a long period stacking ordered (LPSO) phase was subjected to multi-pass deformation by means of a multi-directional forging process, and the microstructure evolution and the influence of the LPSO phase on its dynamic recrystallization (DRX) were studied. The results showed that multi-directional forging can effectively refine the grain with the DRX fraction increased, and DRXed grains lead to the decrease of the texture intensity, which can significantly improve the mechanical properties of the alloy. The different morphologies of the LPSO phase have different degrees of promotion relative to DRX behavior. The lamellar LPSO phase with kinks promoted dislocation plugging, where there could be a potential nucleation site for DRX grains. The fragmented lamellar LPSO phase promoted the DRX process through the particle-stimulated nucleation mechanism, and the block-shaped phase was more prone to stress concentration, which promoted DRX. These effects resulted in continuous grain refinement and a more uniform microstructure.

Hot compression behavior of the Mg-Gd-Y-Zn-Zr alloy filled with intragranular long-period stacking ordered phases

2017 ◽  
Vol 724 ◽  
pp. 528-536 ◽  
Author(s):  
Xiaojie Zhou ◽  
Chuming Liu ◽  
Yonghao Gao ◽  
Shunong Jiang ◽  
Wenhui Liu ◽  
...  
Keyword(s):  
Hot Compression ◽  
Compression Behavior ◽  
Long Period ◽  
Ordered Phases ◽  
Zr Alloy

Role of the Microstructure on the Deformation Behavior in Mg12ZnY with a Long-Period Stacking Ordered Structure

2008 ◽  
Vol 1128 ◽  
Author(s):  
Koji Hagihara ◽  
Naoyuki Yokotani ◽  
Akihito Kinoshita ◽  
Yuya Sugino ◽  
Hiroyuki Yamamoto ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Deformation Behavior ◽  
Hexagonal Structure ◽  
Rhombohedral Structure ◽  
Plastic Behavior ◽  
Long Period ◽  
Lpso Structure ◽  
Plastic Deformation Behavior ◽  
Deformation Modes

AbstractThe influence of a heat-treatment on the plastic deformation behavior in Mg12ZnY with a long-period stacking ordered (LPSO) structure was investigated by using crystals grown by the Bridgman method. Annealing of the crystal at 798 K for 3 days induced the change in the crystal structure of Mg12ZnY from the 18-fold rhombohedral structure (18R) to the 14-fold hexagonal structure (14H). The plastic behavior of those LPSO crystals showed a large variation depending on the loading axis in both crystals, because of the limitation of operative deformation modes in them. The change in the stacking sequence in the LPSO crystals did not show a large influence on the plastic deformation behavior at room temperature.

Evolution of long-period stacking ordered phases and their effect on recrystallization in extruded Mg-Gd-Y-Zn-Zr alloy during annealing

2020 ◽  
Vol 167 ◽  
pp. 110515
Author(s):  
Jianxiong Xiao ◽  
Zhiyong Chen ◽  
Jianbo Shao ◽  
Tao Chen ◽  
Xia Lin ◽  
...  
Keyword(s):  
Long Period ◽  
Ordered Phases ◽  
Zr Alloy

Influence of Hot-Extrusion on Mechanical Properties of AZ31B Magnesium Alloy Sheet

2005 ◽  
Vol 15 (1) ◽  
pp. 25-30
Author(s):  
Yong-Gil Kim ◽  
Hak-Kyu Choi ◽  
Min-Cheol Kang ◽  
Hae-Yong Jeong ◽  
Cha-Hurn Bae
Keyword(s):  
Mechanical Properties ◽  
Magnesium Alloy ◽  
Hot Extrusion ◽  
Alloy Sheet ◽  
Az31b Magnesium Alloy ◽  
Magnesium Alloy Sheet ◽  
Az31b Magnesium Alloy Sheet

scholarly journals A Study on the Damping Capacities of Mg–Zn–Y-Based Alloys with Lamellar Long Period Stacking Ordered Phases by Preparation Process

Metals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 79
Author(s):  
Ruopeng Lu ◽  
Kai Jiao ◽  
Yuhong Zhao ◽  
Kun Li ◽  
Keyu Yao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Solid Solution ◽  
Damping Capacity ◽  
Second Phase ◽  
Preparation Process ◽  
Obvious Effect ◽  
Lpso Phase ◽  
Long Period ◽  
Lamellar Phases ◽  
Ordered Phases

Mg alloys with fine mechanical properties and high damping capacities are essential in engineering applications. In this work, Mg–Zn–Y based alloys with lamellar long period stacking ordered (LPSO) phases were obtained by different processes. The results show that a more lamellar second phase can be obtained in the samples with more solid solution atoms. The density of the lamellar LPSO phase has an obvious effect on the damping of the magnesium alloy. The compact LPSO phase is not conducive to dislocation damping, but sparse lamellar phases can improve the damping capacity without significantly reducing the mechanical properties. The Mg95.3Zn2Y2.7 alloy with lamellar LPSO phases and ~100 μm grain size exhibited a fine damping property of 0.110 at ε = 10–3.

Study on anisotropy of Al-Zn-Mg-Sc-Zr alloy sheet

2021 ◽  
Vol 172 ◽  
pp. 110904
Author(s):  
Yao Li ◽  
Guofu Xu ◽  
Shichao Liu ◽  
Baofeng Wang ◽  
Xiaoyan Peng
Keyword(s):  
Alloy Sheet ◽  
Zr Alloy
Sign in / Sign up

Export Citation Format

Share Document