Superplasticity and Superplastic Formability of Hot-Rolled AZ31 Magnesium Alloy

2007 ◽  
pp. 231-235
Author(s):  
D.L. Yin ◽  
C.W. Wang ◽  
Jing Tao Wang ◽  
Yan Dong Yu
Keyword(s):  
Magnesium Alloy ◽  
Az31 Magnesium Alloy ◽  
Hot Rolled

scholarly journals Recrystallization Microstructure Prediction of a Hot-Rolled AZ31 Magnesium Alloy Sheet by Using the Cellular Automata Method

2019 ◽  
Vol 2019 ◽  
pp. 1-15
Author(s):  
Ming Chen ◽  
Xiaodong Hu ◽  
Hongyang Zhao ◽  
Dongying Ju
Keyword(s):  
Flow Stress ◽  
Magnesium Alloy ◽  
Cellular Automata ◽  
Process Analysis ◽  
Rolling Process ◽  
Alloy Sheet ◽  
Az31 Magnesium Alloy ◽  
Rolled Sheet ◽  
Element Analysis ◽  
Hot Rolled

A large reduction rolling process was used to obtain complete dynamic recrystallization (DRX) microstructures with fine recrystallization grains. Based on the hyperbolic sinusoidal equation that included an Arrhenius term, a constitutive model of flow stress was established for the unidirectional solidification sheet of AZ31 magnesium alloy. Furthermore, discretized by the cellular automata (CA) method, a real-time nucleation equation coupled flow stress was developed for the numerical simulation of the microstructural evolution during DRX. The stress and strain results of finite element analysis were inducted to CA simulation to bridge the macroscopic rolling process analysis with the microscopic DRX activities. Considering that the nucleation of recrystallization may occur at the grain and R-grain boundary, the DRX processes under different deformation conditions were simulated. The evolution of microstructure, percentages of DRX, and sizes of recrystallization grains were discussed in detail. Results of DRX simulation were compared with those from electron backscatter diffraction analysis, and the simulated microstructure was in good agreement with the actual pattern obtained using experiment analysis. The simulation technique provides a flexible way for predicting the morphological variations of DRX microstructure accompanied with plastic deformation on a hot-rolled sheet.

Effects of Homogenization Treatment on Mechanical Properties of Hot-Rolled AZ31 Magnesium Alloy

2007 ◽  
pp. 255-258
Author(s):  
Xin Sheng Huang ◽  
Kazutaka Suzuki ◽  
Akira Watazu ◽  
Ichinori Shigematsu ◽  
Naobumi Saito
Keyword(s):  
Mechanical Properties ◽  
Magnesium Alloy ◽  
Az31 Magnesium Alloy ◽  
Homogenization Treatment ◽  
Hot Rolled

The room temperature mechanical properties of hot-rolled AZ31 magnesium alloy

2009 ◽  
Vol 475 (1-2) ◽  
pp. 126-130 ◽  
Author(s):  
S.M. Fatemi-Varzaneh ◽  
A. Zarei-Hanzaki ◽  
M. Haghshenas
Keyword(s):  
Mechanical Properties ◽  
Magnesium Alloy ◽  
Room Temperature ◽  
Az31 Magnesium Alloy ◽  
Hot Rolled

Study of the Effect of Microstructure on the Anisotropy of AZ31 Magnesium Alloy Thin Sheet

2009 ◽  
Vol 610-613 ◽  
pp. 742-745 ◽  
Author(s):  
Qun Jiao Wang ◽  
Yi Bin Zhang ◽  
Ya Fei Sun ◽  
Jin Geng Chen ◽  
Jian Zhong Cui
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Magnesium Alloy ◽  
Grain Shape ◽  
Thin Sheet ◽  
Relative Difference ◽  
Az31 Magnesium Alloy ◽  
Texture Intensity ◽  
Hot Rolled ◽  
Anisotropy Of Mechanical Properties

Stronger (0001) basal plane textures mainly include two types: and in AZ31 magnesium alloy thin sheet were formed after hot-rolling. The texture types of hot-rolled AZ31 magnesium alloy thin sheet after annealing at 523K and 673K respectively were as same as that of hot-rolled thin sheet without annealing, but texture intensities became weaker, especially after annealing at 673K. The strong texture of hot-rolled thin sheet caused anisotropy of mechanical properties (tensile strength b, yield strength s and elongation ) significantly , and the anisotropy reduced with the decrease of texture intensity after annealing. Besides texture, the grain shape also effects anisotropy of mechanical properties. The anisotropy becames more significantly with the increase of relative difference of grain diameter between transverse and longitudinal directions.

Numerical-Experimental Characterization of a Superplastic AZ31 Magnesium Alloy

2007 ◽  
Vol 551-552 ◽  
pp. 317-322 ◽  
Author(s):  
G. Palumbo ◽  
Donato Sorgente ◽  
Luigi Tricarico ◽  
S.H. Zhang ◽  
W.T. Zheng ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Biaxial Tension ◽  
Thickness Distribution ◽  
Alloy Sheet ◽  
Experimental Results ◽  
Az31 Magnesium Alloy ◽  
Dome Height ◽  
Fe Model ◽  
Flow Parameters ◽  
Hot Rolled

In this work the superplastic behaviour of a hot rolled AZ31 magnesium alloy sheet under a biaxial tension test with the blow forming technique is presented and reported. The specimen dome height and its thickness distribution, during and after the test, have been used as characterizing parameters. A numerical FE model of the test has been developed in order to easily characterize the material and to directly analyze experimental results. The influence of the rolling cycle on the microstructure and consequently on the material behaviour has been also analyzed. A synergic use of experimental results and of the numerical model has been done for finding material constants in different situations. The material flow parameters have been found and results are presented.

Effect of Sn Addition on Corrosion Properties of As-Cast and Hot-Rolled AZ31 Magnesium Alloys

2017 ◽  
Vol 750 ◽  
pp. 124-128
Author(s):  
Yunus Turen ◽  
Didem Güzel ◽  
Huseyin Zengin ◽  
Yavuz Sun ◽  
Hayrettin Ahlatci
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloy ◽  
Hot Rolling ◽  
Rolling Process ◽  
Az31 Magnesium Alloy ◽  
Corrosion Properties ◽  
Electric Resistance Furnace ◽  
Hot Rolling Process ◽  
Working Solution ◽  
Hot Rolled

In this study, the effect of Sn addition on corrosion resistance of as-cast and hot rolled AZ31 magnesium alloy was investigated. Sn additions were made by 0.2 wt%, 0.5 wt% and 1 wt%. An electric resistance furnace was used to produce alloys. Hot rolling process was performed at 350 °C by 40% thickness reduction at one rolling pass. Microstructure characterizations were performed by optical (OM) and scanning electron microscope (SEM). Immersion tests and electrochemical analyses were performed to investigate the corrosion resistance of the alloys. A 3.5% NaCl working solution at room temperature was used in both corrosion tests. The results showed that Sn addition decreased the primary dentrite size and restricted the growth of secondary dentritic arm. The as-cast structures transformed to dynamically recrystallized grain structures after hot-rolling process in all the alloys. Corrosion resistance of AZ31 magnesium alloy tended to decrease with Sn addition. This decrease was more clear in homogenized and hot-rolled states while there were some flactuations in as-cast states.

The Effect of Crystal Orientation on Damping Capacity in Rolled AZ31 Magnesium Alloy

2018 ◽  
Vol 941 ◽  
pp. 1127-1131 ◽  
Author(s):  
Ju Ho Kwak ◽  
Min Seong Ko ◽  
Kwon Hoo Kim
Keyword(s):  
Magnesium Alloy ◽  
Crystal Orientation ◽  
Az31 Magnesium Alloy ◽  
Damping Capacity ◽  
Magnesium Alloy Az31 ◽  
Average Grain Size ◽  
Initial Texture ◽  
Main Component ◽  
Hot Rolled ◽  
The Relationship

The effect of crystal orientation on damping capacity is studied on hot rolled AZ31 magnesium alloy. AZ31 magnesium alloys which was machined out parallel to rolled direction and perpendicular to rolled direction were investigated about the relationship between the initial texture and damping capacity. The specimens are annealed at 623 K and time ranging from 30 to 180 minutes. After heat treatment recrystallization is occurred. Then, average grain size and damping capacity are increased with increasing annealing time. Two types of specimens show different main component of texture and damping capacity respectively. It is found that initial texture was affected on damping capacity.

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