Enhancement of Press Formability of Rolled Mg Alloy Sheet by Using Cross Rolling Processes

In this study, two different cross rolling processes, which are effective rolling processes for a reduction of (0002) plane texture, are introduced. In the first cross rolling process, a sheet specimen is rotated around the rolling plane normal after each pass. In the second cross rolling process, the roll axis is tilted against the transverse direction (TD) in the rolling direction (RD) - TD plane. The two cross-rolling processed were carried out on a AZ31 alloy, and the press formability of cross-rolled sheets was compared with that of unidirectionally rolled sheets determined by Erichsen tests at 433 – 493 K. Both the cross-rolled specimens exhibited a high press formability, compared to an unidirectionally rolled alloy. The high press formability of the specimen by the first cross rolling was due to a reduction in (0002) texture intensity. The high press formability of the specimen by the second cross rolling was due to not only a reduction in (0002) texture intensity but also grain refinement.

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The effect of homogenization on the recrystallization of an Al-Mn-Mg alloy sheet

Journal of Materials Science ◽

10.1007/s10853-005-6929-x ◽

2005 ◽

Vol 40 (5) ◽

pp. 1135-1139 ◽

Cited By ~ 3

Author(s):

M. Aghaie-Khafri

Keyword(s):

Alloy Sheet ◽

Mg Alloy

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Effect of pseudo cross-rolling on the recrystallization texture of a continuous cast Al–Mg alloy

Scripta Materialia ◽

10.1016/j.scriptamat.2009.01.015 ◽

2009 ◽

Vol 60 (9) ◽

pp. 768-771 ◽

Cited By ~ 13

Author(s):

Wenchang Liu ◽

Xingyi Li ◽

Xiangcai Meng

Keyword(s):

Recrystallization Texture ◽

Mg Alloy ◽

Continuous Cast ◽

Cross Rolling

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Improved Formability and Deep Drawing of Cross-Rolled Magnesium Alloy Sheets at Elevated Temperatures

Materials Science Forum ◽

10.4028/www.scientific.net/msf.488-489.461 ◽

2005 ◽

Vol 488-489 ◽

pp. 461-464 ◽

Cited By ~ 1

Author(s):

Yong Chao Xu ◽

Shi Hong Zhang ◽

H.M. Liu ◽

Z.T. Wang ◽

W.T. Zheng ◽

...

Keyword(s):

Magnesium Alloy ◽

Deep Drawing ◽

Elevated Temperatures ◽

Rolling Direction ◽

Alloy Sheet ◽

Rolled Sheet ◽

Drawing Ratio ◽

Cross Rolling ◽

Magnesium Alloy Sheet ◽

Cylindrical Cup

The extruded sheets were prepared at the temperature between 350ıand 400ı, and the magnesium alloy sheet was manufactured by a new method, cross rolling, in which the rolling direction was changed in each pass. At the time, deep drawing of magnesium alloy sheet was investigated at elevated temperatures. The results show that the sheet has refined-grain by cross-rolling after it was annealed at 250ı, and the formability is significantly improved at lower temperatures, which is superior to the extruded sheet and the one-way rolled sheet. Deep drawing of magnesium alloy was performed successfully, and cylindrical cup of limited drawing ratio (LDR) 2.6 and 35 mm deep rectangular box (65ı50) was achieved at the lower temperature of 170ı. The different types of fracture were analyzed and reasonable parameters were determined.

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