Critical damage value of AZ31B magnesium alloy with different temperatures and strain rates

Rare Metals ◽  
2015 ◽  
Author(s):  
Jing-Ren Dong ◽  
Ding-Fei Zhang ◽  
Yu-Feng Dong ◽  
Fu-Sheng Pan ◽  
Sen-Sen Chai
Keyword(s):  
Magnesium Alloy ◽  
Strain Rates ◽  
Az31b Magnesium Alloy ◽  
Different Temperatures ◽  
Critical Damage

Influence of initial texture on formability of AZ31B magnesium alloy sheets at different temperatures

2011 ◽  
Vol 211 (10) ◽  
pp. 1575-1580 ◽  
Author(s):  
Hua Zhang ◽  
Guangsheng Huang ◽  
Deqiang Kong ◽  
Gaofeng Sang ◽  
Bo Song
Keyword(s):  
Magnesium Alloy ◽  
Az31b Magnesium Alloy ◽  
Different Temperatures ◽  
Initial Texture

Ultimate Strength and Plasticity of Magnesium Alloy under Different Temperatures and Strain Rates

2011 ◽  
Vol 686 ◽  
pp. 225-229
Author(s):  
Bin Chen ◽  
Da Gang Yin ◽  
Quan Yuan ◽  
Ji Luo ◽  
Ding Fei Zhang ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Ultimate Strength ◽  
Fracture Stress ◽  
Tensile Tests ◽  
Material Testing ◽  
Testing System ◽  
Strain Rates ◽  
Az61 Magnesium Alloy ◽  
Different Temperatures ◽  
Strength And Plasticity

A series of tensile tests of AZ61 magnesium alloy were conducted using Gleeble-1500 thermal-mechanical material testing system to learn the effect of the test temperatures and strain rates on the mechanical properties of the alloy. It is indicated that the higher the temperature, the lower the ultimate strength and fracture stress, and the larger the plasticity. It is also revealed that the larger the strain rate is, the higher the ultimate strength of the specimens will be, and the larger the plasticity of the specimens will be. The failure mechanism of the material under high temperature was also analyzed based on the fracture observation. It shows that the high temperatures will induce microvoids or microflaws in the material.

The effects of detwinning on the mechanical properties of AZ31B magnesium alloy with different strain rates at 423K

2014 ◽  
Vol 612 ◽  
pp. 423-430 ◽  
Author(s):  
Lifei Wang ◽  
Guangsheng Huang ◽  
Zhaoyang Shi ◽  
Hua Zhang ◽  
Paola Bassani ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Magnesium Alloy ◽  
Strain Rates ◽  
Az31b Magnesium Alloy

Mechanical Behaviors of Magnesium Alloy AZ61 under Different Strain Rates and Heating Rates

2011 ◽  
Vol 686 ◽  
pp. 208-212
Author(s):  
Bin Chen ◽  
Quan Yuan ◽  
Ji Luo ◽  
Ding Fei Zhang ◽  
Guo Zheng Quan
Keyword(s):  
Magnesium Alloy ◽  
Heating Rate ◽  
Ultimate Strength ◽  
Testing System ◽  
Strain Rates ◽  
Mechanical Behaviors ◽  
Heating Rates ◽  
High Heating ◽  
Different Temperatures ◽  
Fracture Section

The effects of strain rate (SR) and heating rate (HR) on the mechanical behaviors of the tensile specimens of magnesium alloy AZ61 were experimentally investigated using a Gleeble-1500 thermal-mechanical material testing system. It showed that the higher the temperature is, the lower the ultimate strength of the specimens will be. The higher the heating rate is, the higher the ultimate strength of the specimens will be. The metallurgraphs of the fracture section of the specimens were also experimentally investigated for exploring their failure mechanism under different temperatures and heating rates. It showed that the high temperatures and high heating rates will induce microvoids in the specimens. The microvoids make the specimens failure under relative low loads.

Constitutive Models for AZ31 Magnesium Alloys

2008 ◽  
Vol 367 ◽  
pp. 87-94 ◽  
Author(s):  
Carlo Bruni ◽  
Lorenzo Donati ◽  
Mohamad El Mehtedi ◽  
M. Simoncini
Keyword(s):  
Magnesium Alloy ◽  
Constitutive Models ◽  
Extrusion Process ◽  
Flow Behaviour ◽  
Az31 Magnesium Alloy ◽  
Strain Rates ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Different Temperatures ◽  
Power Law Equation

The present investigation aims at studying and modelling the flow behaviour of the AZ31 magnesium alloy by means of torsion tests performed in extended ranges of temperature and strain rates. Two types of rheological models were considered. The former is based on the power law equation, whilst the latter is based on the Sellars and Tegart approach. The effectiveness of the two constitutive models in describing the flow behaviour of the AZ31 magnesium alloy under investigation was evaluated. It was observed that both the equations are able to predict the flow behaviour of the material at different temperatures and strain rates. In particular, the former is very effective in predicting the hardening stage of the flow curve, whilst the latter allows to fit the softening stage. The models were used for the finite element analysis of a complex extrusion process and the results, in terms of the load-stroke curves, compared to each other.

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