Improvement of formability of Mg–Al–Zn alloy sheet at low temperatures using differential speed rolling

2009 ◽  
Vol 470 (1-2) ◽  
pp. 263-268 ◽  
Author(s):  
Xinsheng Huang ◽  
Kazutaka Suzuki ◽  
Akira Watazu ◽  
Ichinori Shigematsu ◽  
Naobumi Saito
Keyword(s):  
Low Temperatures ◽  
Alloy Sheet ◽  
Differential Speed Rolling ◽  
Zn Alloy ◽  
Differential Speed

Effects of manganese addition on microstructure and press formability of hot-rolled Mg–Al–Zn alloy sheets

2008 ◽  
Vol 23 (11) ◽  
pp. 3029-3039 ◽  
Author(s):  
Xinsheng Huang ◽  
Kazutaka Suzuki ◽  
Akira Watazu ◽  
Ichinori Shigematsu ◽  
Naobumi Saito
Keyword(s):  
Az31 Alloy ◽  
Solubility Limit ◽  
Solid Solubility Limit ◽  
Homogeneous Microstructure ◽  
Texture Intensity ◽  
Differential Speed Rolling ◽  
Hot Rolled ◽  
Mn Additions ◽  
Zn Alloy ◽  
Differential Speed

Differential speed rolling (DSR) has been carried out on AZ31 alloys with Mn additions of 0 to 0.6 wt% for investigating the effects of Mn on microstructure, texture, mechanical properties, and formability. The Al–Mn compounds were formed in the sample with a Mn addition of only 0.2 wt% because of its low solid-solubility limit. There were tiny differences among the DSR-processed AZ31 alloys with different Mn contents, while the AZ31 alloy without Mn addition exhibited a more homogeneous microstructure, a weaker basal texture intensity, and a much superior formability together with a larger likelihood of grain growth during annealing. The Mn dissolving in αMg matrix exerted a far stronger influence on the resulting properties compared with those existing in form of the Al–Mn compounds. The Mn solute atoms induced an increase in c/a ratio, which may suppress activity of nonbasal slips and in turn degrade the deformation capability.

Mechanical properties of Mg–Al–Zn alloy with a tilted basal texture obtained by differential speed rolling

2008 ◽  
Vol 488 (1-2) ◽  
pp. 214-220 ◽  
Author(s):  
Xinsheng Huang ◽  
Kazutaka Suzuki ◽  
Akira Watazu ◽  
Ichinori Shigematsu ◽  
Naobumi Saito
Keyword(s):  
Mechanical Properties ◽  
Basal Texture ◽  
Differential Speed Rolling ◽  
Zn Alloy ◽  
Differential Speed

Texture and Microstructure Control of Cu and Cu-Zn Alloy by Differential Speed Rolling

Copper ◽  
2007 ◽  
pp. 44-49
Author(s):  
Tetsuo Sakai ◽  
Junya Watanabe ◽  
Naoaki Iwamoto ◽  
Hiroshi Utsunomiya
Keyword(s):  
Microstructure Control ◽  
Differential Speed Rolling ◽  
Zn Alloy ◽  
Differential Speed

Mechanical Properties and Formability of AZ31 Magnesium Alloy Processed by Differential Speed Rolling

2007 ◽  
Vol 544-545 ◽  
pp. 395-398 ◽  
Author(s):  
Xin Sheng Huang ◽  
Kazutaka Suzuki ◽  
Akira Watazu ◽  
Ichinori Shigematsu ◽  
Naobumi Saito
Keyword(s):  
Mechanical Properties ◽  
Room Temperature ◽  
Rolling Plane ◽  
Alloy Sheet ◽  
Speed Ratio ◽  
Roll Speed ◽  
Proof Stress ◽  
Differential Speed Rolling ◽  
R Value ◽  
Differential Speed

An AZ31 (Mg-3Al-1Zn-0.35Mn in mass%) alloy sheet exhibiting the inclination of the basal plane from the rolling plane at about 15º, was fabricated by a DSR processing with a roll speed ratio of 1.167. Compared with the normal rolled sheets, the DSR processed sheets showed a lower 0.2% proof stress, a larger elongation, a smaller r-value and a larger n-value. The Erichsen value at room temperature significantly increased from 2.2 to 3.1, and the deep drawability also improved.

Microstructure and texture of Mg–Al–Zn alloy processed by differential speed rolling

2008 ◽  
Vol 457 (1-2) ◽  
pp. 408-412 ◽  
Author(s):  
Xinsheng Huang ◽  
Kazutaka Suzuki ◽  
Akira Watazu ◽  
Ichinori Shigematsu ◽  
Naobumi Saito
Keyword(s):  
Differential Speed Rolling ◽  
Zn Alloy ◽  
Differential Speed
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