Superplastic gas pressure forming of fine-grained AZ61 magnesium alloy sheet

2004 ◽  
Vol 372 (1-2) ◽  
pp. 15-20 ◽  
Author(s):  
S.W. Chung ◽  
K. Higashi ◽  
W.J. Kim
Keyword(s):  
Magnesium Alloy ◽  
Alloy Sheet ◽  
Gas Pressure ◽  
Magnesium Alloy Sheet ◽  
Fine Grained ◽  
Az61 Magnesium Alloy

Effect of Microstructure on Hot Bulging Deformation for AZ31 Magnesium Alloy Sheet with Resistance Heating

2014 ◽  
Vol 783-786 ◽  
pp. 537-540
Author(s):  
Kai Feng Zhang ◽  
Jing Yuan Liu ◽  
Chao Li
Keyword(s):  
Magnesium Alloy ◽  
Pulse Current ◽  
Alloy Sheet ◽  
Az31 Magnesium Alloy ◽  
Coarse Grained ◽  
Wind Force ◽  
Magnesium Alloy Sheet ◽  
Fine Grained ◽  
Az31 Magnesium Alloy Sheet ◽  
Electron Wind

To enhance the heating efficiency and the formability of AZ31 magnesium alloy, the assistance heating method is adopted during the hot bulging process. The free bulging test of coarse grained and fine grained AZ31 magnesium alloy sheet was carried out. During the forming process, the effects of pulse current on the formed sheet combine both thermoelectricity and electro-plasticity. Directional and asymmetrical deformation of the coarse-grained AZ31 magnesium alloy sheet by the effect of pulse current is observed and analyzed. But in the same processing condition, the deformation of fine grained AZ31 magnesium alloy sheet is symmetrical. To investigate the influence of electron wind force on pulse current auxiliary bulging process, the simulation of AZ31 magnesium alloy pulse current auxiliary bulging based on the electron wind force value calculated by mathematical model was performed using the Marc software. The bulging simulation result showed a special phenomenon that the shape of the bulging specimen is unsymmetrical and the dome deviated from the symmetry axis to the side of positive pole. The simulation results were basically consistent with the experimental results. The deformation properties, microstructure characteristics, dislocation movement of the AZ31 magnesium alloy during gas bulging processing by the pulse current are investigated.

scholarly journals Texture Dependence of Elongation Anisotropy in an AZ61 Magnesium Alloy Sheet

2004 ◽  
Vol 68 (1) ◽  
pp. 27-33 ◽  
Author(s):  
Ray Ohyama ◽  
Junichi Koike ◽  
Mayumi Suzuki ◽  
Kouichi Maruyama
Keyword(s):  
Magnesium Alloy ◽  
Alloy Sheet ◽  
Magnesium Alloy Sheet ◽  
Az61 Magnesium Alloy

Microstructural and textural evolution of AZ61 magnesium alloy sheet during bidirectional cyclic bending

2013 ◽  
Vol 79 ◽  
pp. 43-51 ◽  
Author(s):  
Qinghuan Huo ◽  
Xuyue Yang ◽  
Jijun Ma ◽  
Huan Sun ◽  
Jia Qin ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Alloy Sheet ◽  
Cyclic Bending ◽  
Magnesium Alloy Sheet ◽  
Textural Evolution ◽  
Az61 Magnesium Alloy

scholarly journals Effect of twin formation by repetitive bending on texture of AZ61 magnesium alloy sheet and improvement of formability

2009 ◽  
Vol 59 (12) ◽  
pp. 655-658 ◽  
Author(s):  
Yoshifuru Sunaga ◽  
Yoshinori Tanaka ◽  
Motoo Asakawa ◽  
Masahito Katoh ◽  
Masaru Kobayashi
Keyword(s):  
Magnesium Alloy ◽  
Alloy Sheet ◽  
Magnesium Alloy Sheet ◽  
Az61 Magnesium Alloy ◽  
Twin Formation

Quick Plastic Forming Behavior of AZ91 Magnesium Alloy Sheet

2011 ◽  
Vol 314-316 ◽  
pp. 842-846
Author(s):  
Gang Wang ◽  
Zhi Peng Zhang ◽  
Cheng Bo Liu ◽  
Xia Sheng
Keyword(s):  
Grain Size ◽  
Magnesium Alloy ◽  
Alloy Sheet ◽  
Gas Pressure ◽  
Test Results ◽  
Free Gas ◽  
Magnesium Alloy Sheet ◽  
Plastic Forming ◽  
Quick Plastic Forming ◽  
Bulging Test

The quick plastic forming (QPF) behavior for fine-grained AZ91D magnesium alloy sheet with the thickness of 1.0 mm and the grain size of 6.0 µm was investigated. Free gas bulging tests were conducted under different gas pressure for 300 s in the range of 250-400°C to investigate how the temperature and pressure impact on the formability of QPF. Free gas bulging test results show that the bulge height of semisphere part exist the peak value of 33 mm under the gas pressure of 0.5 MPa at 400°C. QPF tests of cup part were performed based on the free gas bulging test results. A cup part with the height of 20 mm which both of surface quality and fillet radius were satisfactory was formed using a two-stage loading path at 400°C during 300 s. Furthermore the microstructural revolution law during the QPF was discussed. The larger the thinning rate of parts is, the smaller the grain size will be.

scholarly journals Effect of twin formation by repetitive bending on texture of AZ61 magnesium alloy sheet

2008 ◽  
Vol 58 (10) ◽  
pp. 522-523 ◽  
Author(s):  
Yoshinori Tanaka ◽  
Motoo Asakawa ◽  
Masahito Katoh ◽  
Masaru Kobayashi
Keyword(s):  
Magnesium Alloy ◽  
Alloy Sheet ◽  
Magnesium Alloy Sheet ◽  
Az61 Magnesium Alloy ◽  
Twin Formation

Influence of Hot-Extrusion on Mechanical Properties of AZ31B Magnesium Alloy Sheet

2005 ◽  
Vol 15 (1) ◽  
pp. 25-30
Author(s):  
Yong-Gil Kim ◽  
Hak-Kyu Choi ◽  
Min-Cheol Kang ◽  
Hae-Yong Jeong ◽  
Cha-Hurn Bae
Keyword(s):  
Mechanical Properties ◽  
Magnesium Alloy ◽  
Hot Extrusion ◽  
Alloy Sheet ◽  
Az31b Magnesium Alloy ◽  
Magnesium Alloy Sheet ◽  
Az31b Magnesium Alloy Sheet
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