Saturation of Deformation Twinning in Magnesium Alloys

2016 ◽  
Vol 879 ◽  
pp. 2084-2087 ◽  
Author(s):  
Wen Wen Wei ◽  
Erwin Povoden-Karadeniz ◽  
Ernst Kozeschnik
Keyword(s):  
Physical Model ◽  
Magnesium Alloys ◽  
Deformation Twinning ◽  
Mg Alloy ◽  
Alloy Az31 ◽  
The Mean ◽  
Twin Growth

The saturation of primary tensile twins in heavily textured Mg-alloy AZ31 is investigated, and their strain accommodation limit is evaluated. EBSD results suggest that the mean number of twins per grain saturate rapidly, followed by the stop of twin growth. Twinning saturation is included in a physical model of twin evolution.

scholarly journals Role of alloying elements on twin growth and twin transmission in magnesium alloys

2017 ◽  
Vol 706 ◽  
pp. 295-303 ◽  
Author(s):  
M. Arul Kumar ◽  
I.J. Beyerlein ◽  
R.A. Lebensohn ◽  
C.N. Tomé
Keyword(s):  
Magnesium Alloys ◽  
Alloying Elements ◽  
Twin Growth

Harnessing superhydrophobic coatings for enhancing the surface corrosion resistance of magnesium alloys

2021 ◽  
Author(s):  
Rong Gu ◽  
Jie Shen ◽  
Qing Hao ◽  
Jinghong Wang ◽  
Dan Li ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloys ◽  
Mg Alloy ◽  
Surface Corrosion ◽  
Superhydrophobic Coatings

A superhydrophobic Mg alloy was obtained by depositing SiO2-F NPs in the presence of PDA, presenting excellent capability against corrosion.

Modeling and Simulation of Microstructure Evolution of Cast Mg Alloy

2010 ◽  
Vol 638-642 ◽  
pp. 1562-1568 ◽  
Author(s):  
Liang Huo ◽  
Zhi Qiang Han ◽  
Bai Cheng Liu
Keyword(s):  
Solute Transport ◽  
Magnesium Alloys ◽  
Microstructure Evolution ◽  
Local Equilibrium ◽  
Equilibrium Composition ◽  
Mg Alloy ◽  
Dendrite Morphology ◽  
Dendrites Growth ◽  
The Difference ◽  
Cast Magnesium

A cellular automaton (CA) model has been developed for simulating the microstructure evolution and dendrite morphology of cast magnesium alloys. The growth kinetics of dendrite tips is determined by the difference between local equilibrium composition and local actual composition obtained by solving the solute transport equation. Two sets of meshes, a hexagonal mesh and an orthogonal mesh, are used in the model to perform the simulation. The hexagonal mesh is used to perform CA calculation to reflect the texture of Mg alloy dendrites, and the orthogonal mesh is used to solve the solute transport equations. The model was applied to simulate single dendrite evolution and columnar dendrites growth of AZ91D Mg alloy, as well as multi-grain growth of Mg-10Gd-2Y-0.5Zr (wt%) Mg alloy. Permanent mold step-shaped castings of the two Mg alloys were poured and metallographic examinations were carried out for validating the present model. The simulation results agree well with metallographic results. The model can be applied to simulate the microstructure evolution and dendrite morphology of magnesium alloys.

scholarly journals Deformation twinning in a nanocrystalline hcp Mg alloy

2011 ◽  
Vol 64 (3) ◽  
pp. 213-216 ◽  
Author(s):  
X.L. Wu ◽  
K.M. Youssef ◽  
C.C. Koch ◽  
S.N. Mathaudhu ◽  
L.J. Kecskés ◽  
...  
Keyword(s):  
Deformation Twinning ◽  
Mg Alloy

The Analysis of Temperature and Strain Rate Influence on Flow Stress of Mg Alloy AZ31

2015 ◽  
Vol 752-753 ◽  
pp. 448-451
Author(s):  
Mária Kapustová ◽  
Mariana Balážová
Keyword(s):  
Flow Stress ◽  
Magnesium Alloy ◽  
Strain Rate ◽  
Temperature Interval ◽  
Az31 Alloy ◽  
Mg Alloy ◽  
Temperature Influence ◽  
Alloy Az31 ◽  
Alloy Type ◽  
Stress Curve

This contribution analyses influence of thermo mechanical conditions of magnesium alloy - type AZ31 forming on its flow stress. Temperature and strain/deformation rate belong to the essential thermo mechanical parameters of strain/deformation process. A testing cylinder made of selected Mg alloy was strained using pressure at warm temperatures within defined two degrees of nominal strain 30% and 60% and strain rate of 5 s-1. The pressure test at warm temperatures was conducted at testing temperatures 250, 300 and 350°C. It is important to explore the temperature influence on AZ31 alloy flow stress in order to reduce energy consumption of formed pieces production. Surface quality and precision of required dimension will improve, as well. The experiment was aimed at graphic evaluation of temperature influence on flow stress of Mg alloy AZ31B. Resulting form flow stress curve it is possible to read out its value for particular strain. These values are essential for calculation of forming force and work. For magnesium alloy AZ31 warm forming at temperature interval of 230 - 425°C is typical. The pressure tests were realized within the temperature interval of 250 - 350°C, i. e. at temperatures belonging to lower limit of recommended temperature interval, with the aim of acquirement as much information as possible on Mg alloy behavior at low forming temperatures.

Effect of microalloyed Ca on the microstructure and corrosion behavior of extruded Mg alloy AZ31

2020 ◽  
Vol 823 ◽  
pp. 153844 ◽  
Author(s):  
Cheng Zhang ◽  
Liang Wu ◽  
Guangsheng Huang ◽  
Yu Huang ◽  
Bin Jiang ◽  
...  
Keyword(s):  
Corrosion Behavior ◽  
Mg Alloy ◽  
Alloy Az31
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