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
2006 ◽  
Vol 15-17 ◽  
pp. 467-472 ◽  
Author(s):  
Jie Xing ◽  
Xu Yue Yang ◽  
Hiromi Miura ◽  
Taku Sakai

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.


2007 ◽  
Vol 546-549 ◽  
pp. 333-336 ◽  
Author(s):  
Shi Hong Zhang ◽  
Li Mei Ren ◽  
Li Xin Zhou ◽  
Yong Chao Xu ◽  
G. Palumbo ◽  
...  

In the present study, warm hydroforming of cell phone cases with magnesium alloy AZ31 sheets was investigated. Fine-grained magnesium alloy sheets were prepared by cross rolling. And the tensile tests were first conducted in order to determine the proper forming temperature. The results showed that the most suitable temperature range appears to be 150-200°C. At last, the magnesium alloy cell phone cases characterized with the small round radius of all edges were formed successfully at 170°C with the low punch velocity and the maximum pressure not less than 5MPa.


2014 ◽  
Vol 9 (2) ◽  
pp. 249-257
Author(s):  
Chuanxing Li ◽  
Yanling Zhang ◽  
Dong Chen ◽  
Guangfeng Duan ◽  
Zhenyin Liu ◽  
...  

2021 ◽  
Vol 807 ◽  
pp. 140821
Author(s):  
Kai Zhang ◽  
Zhutao Shao ◽  
Christopher S. Daniel ◽  
Mark Turski ◽  
Catalin Pruncu ◽  
...  

Author(s):  
Kenneth J. Tam ◽  
Matthew W. Vaughan ◽  
Luming Shen ◽  
Marko Knezevic ◽  
Ibrahim Karaman ◽  
...  

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