scholarly journals Dynamic Evolution of New Grains in Magnesium Alloy AZ31 during Hot Deformation

2003 ◽  
Vol 44 (1) ◽  
pp. 197-203 ◽  
Author(s):  
Xuyue Yang ◽  
Hiromi Miura ◽  
Taku Sakai
Keyword(s):  
Magnesium Alloy ◽  
Hot Deformation ◽  
Dynamic Evolution ◽  
Alloy Az31 ◽  
Magnesium Alloy Az31

Effect of Initial Grain Size on Deformation Behavior and Dynamic Recrystallization of Magnesium Alloy AZ31

2005 ◽  
Vol 488-489 ◽  
pp. 223-226 ◽  
Author(s):  
Xu Yue Yang ◽  
Masayoshi Sanada ◽  
Hiromi Miura ◽  
Taku Sakai
Keyword(s):  
Magnesium Alloy ◽  
Dynamic Recrystallization ◽  
Grain Refinement ◽  
Hot Deformation ◽  
Structural Changes ◽  
Kink Bands ◽  
Alloy Az31 ◽  
Continuous Dynamic Recrystallization ◽  
Magnesium Alloy Az31 ◽  
Continuous Dynamic

Hot deformation and associated structural changes were studied in compression of a magnesium alloy AZ31 with initial grain sizes (D0) of 22 µm and 90 µm at a temperature of 573K. D0 influences significantly the flow curve and the kinetics of grain refinement during hot deformation. For D0 = 22 µm, grain fragmentation takes place due to frequent formation of kink bands initially at corrugated grain boundaries and then in grain interiors in low strain, followed by full development of new fine grains in high strain. For D0 = 90 µm, in contrast, twinning takes place in coarser original grains, and then kink bands and new fine grains are formed mainly in finer ones at low strains. Then new grains are formed in necklace along the boundaries of coarse original grains, followed by their development into the grain interiors. Grain refinement in the Mg alloy can be concluded to result from a series of deformation-induced continuous reactions, they are essentially similar to continuous dynamic recrystallization (cDRX).

Hot deformation kinetics of magnesium alloy AZ31

2006 ◽  
Vol 21 (3) ◽  
pp. 15-17 ◽  
Author(s):  
Wang Lingyun ◽  
Huang Guangjie ◽  
Fan Yonge ◽  
Lu Zhiwen ◽  
Pan Fusheng
Keyword(s):  
Magnesium Alloy ◽  
Hot Deformation ◽  
Alloy Az31 ◽  
Deformation Kinetics ◽  
Magnesium Alloy Az31 ◽  
Kinetics Of

A study of the process of hot deformation of magnesium alloy AZ31

2006 ◽  
Vol 48 (11-12) ◽  
pp. 494-498 ◽  
Author(s):  
A. V. Zinov’ev ◽  
A. M. Ionov ◽  
L. M. Kaputkina ◽  
P. V. Mironov ◽  
E. Ya. Kaputkin ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Hot Deformation ◽  
Alloy Az31 ◽  
Magnesium Alloy Az31

The Influence of Twinning on the Hot Working Flow Stress and Microstructural Evolution of Magnesium Alloy AZ31

2005 ◽  
Vol 488-489 ◽  
pp. 611-614 ◽  
Author(s):  
Aiden G. Beer ◽  
Matthew R. Barnett
Keyword(s):  
Flow Stress ◽  
Magnesium Alloy ◽  
Microstructural Evolution ◽  
Hot Deformation ◽  
Room Temperature ◽  
Peak Flow ◽  
Alloy Az31 ◽  
Magnesium Alloy Az31 ◽  
Deformation Step ◽  
Cast Condition

The microstructural evolution during compression (at 350°C and a strain rate of 0.01s-1) was examined for magnesium alloy AZ31 received in the "as-cast" condition. It was revealed that at low strains, many twins are produced and dynamically recrystallized (DRX) grains form as a necklace along pre-existing grain boundaries. At higher strains, DRX stagnates, most likely due to the accommodation of deformation in the DRX fraction of the material. It was also observed that twin boundaries act as sites for the nucleation of DRX grains. The analysis was repeated for samples pre-compressed to a strain of 0.15 at room temperature prior to the hot deformation step. The idea of these additional tests was to increase the degree of twinning and therefore the density of sites for the nucleation of DRX. It was found that statically recrystallized (SRX) grains developed at the twins during heating to the test temperature. When these samples were deformed, the peak flow stress was reduced by approximately 20% and the development of DRX was enhanced. This can be attributed to the accelerated nucleation of DRX in the refined SRX structure.

Experimental Research on a Novel Iodine-125 Seed Strand Connected Using Magnesium Alloy AZ31

2014 ◽  
Vol 9 (2) ◽  
pp. 249-257
Author(s):  
Chuanxing Li ◽  
Yanling Zhang ◽  
Dong Chen ◽  
Guangfeng Duan ◽  
Zhenyin Liu ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Experimental Research ◽  
Alloy Az31 ◽  
Magnesium Alloy Az31 ◽  
Iodine 125
Sign in / Sign up

Export Citation Format

Share Document