Anisotropy of low temperature superplasticity of fine grained magnesium alloy AZ31 processed by multidirectional forging

2009 ◽  
Vol 25 (12) ◽  
pp. 1442-1447 ◽  
Author(s):  
Z.-R. Zhang ◽  
J. Xing ◽  
X. Yang ◽  
H. Miura ◽  
T. Sakai
Keyword(s):  
Magnesium Alloy ◽  
Low Temperature ◽  
Alloy Az31 ◽  
Fine Grained ◽  
Multidirectional Forging ◽  
Magnesium Alloy Az31

Low Temperature Superplasticity of Fine-Grained Magnesium Alloy AZ31

2006 ◽  
Vol 15-17 ◽  
pp. 467-472 ◽  
Author(s):  
Jie Xing ◽  
Xu Yue Yang ◽  
Hiromi Miura ◽  
Taku Sakai
Keyword(s):  
Magnesium Alloy ◽  
Low Temperature ◽  
Stress Exponent ◽  
Tensile Axis ◽  
Tensile Tests ◽  
Total Elongation ◽  
Grain Rotation ◽  
Alloy Az31 ◽  
Fine Grained ◽  
Magnesium Alloy Az31

Low temperature superplasticity (LTSP) was studied in a fine-grained magnesium alloy AZ31 which was processed by multi-directional forging (MDF) under decreasing temperature conditions. Tensile specimens were cut from MDFed Mg alloy parallel to the final compression axis (CA), and the tensile axis perpendicular to the CA. Tensile tests was carried out at temperatures from 393K to 473K and at various strain rates. Superplasticity appears even at a low temperature of 393K with a stress exponent (n) of about 0.56 and a total elongation of 370%. The relative large stress exponent can be connected with grain coarsening taking place during deformation. The initial texture hardly takes place during deformation. This suggests that grain rotation does not occur during superplasticcity.

scholarly journals Low-temperature plasticity of magnesium alloy AZ31 with different microstructure

2011 ◽  
Vol 67 (a1) ◽  
pp. C423-C424
Author(s):  
V. V. Pustovalov ◽  
Y. Estrin ◽  
P. A. Zabrodin ◽  
I. S. Braude ◽  
T. V. Grigorova ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Low Temperature ◽  
Alloy Az31 ◽  
Magnesium Alloy Az31

scholarly journals In vitro degradation and cytocompatibility of a low temperature in-situ grown self-healing Mg-Al LDH coating on MAO-coated magnesium alloy AZ31

2020 ◽  
Vol 5 (2) ◽  
pp. 364-376 ◽  
Author(s):  
Chang-Yang Li ◽  
Ling Gao ◽  
Xiao-Li Fan ◽  
Rong-Chang Zeng ◽  
Dong-Chu Chen ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Low Temperature ◽  
Self Healing ◽  
In Vitro Degradation ◽  
Alloy Az31 ◽  
Magnesium Alloy Az31

scholarly journals Superplasticity of Fine-Grained Magnesium Alloy AZ31 Processed by Multi-Directional Forging

2007 ◽  
Vol 48 (6) ◽  
pp. 1406-1411 ◽  
Author(s):  
Jie Xing ◽  
Xuyue Yang ◽  
Hiromi Miura ◽  
Taku Sakai
Keyword(s):  
Magnesium Alloy ◽  
Alloy Az31 ◽  
Fine Grained ◽  
Magnesium Alloy Az31

Grain Refinement in Magnesium Alloy AZ31 during Multidirectional Forging under Decreasing Temperature Conditions

2005 ◽  
Vol 488-489 ◽  
pp. 597-600 ◽  
Author(s):  
Jie Xing ◽  
Xu Yue Yang ◽  
Hiromi Miura ◽  
Taku Sakai
Keyword(s):  
Magnesium Alloy ◽  
Grain Refinement ◽  
Structural Changes ◽  
Large Strains ◽  
Kink Bands ◽  
Alloy Az31 ◽  
Multidirectional Forging ◽  
Magnesium Alloy Az31 ◽  
Cumulative Strain ◽  
Uniform Generation

Grain refinement in a magnesium alloy AZ31 was studied in multi-directional forging (MDF) at a strain rate of 3×10-3s-1 with decreasing temperature from 623K to 423K. The MDF was carried out up to large cumulative strains with changing the loading direction during decreasing temperature from pass to pass. The structural changes were characterized by generation of many mutually crossing kink bands at low strains, followed by development of very fine grains at large strains. The results showed that MDF with decreasing temperature can accelerate uniform generation of much finer grains, resulting in the minimal grain size of 0.36µm in a cumulative strain of 4.8 at 423K. The mechanism of grain refinement was discussed.

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