Baoshan Iron & Steel Co., Ltd.

China Baowu Steel Group Corporation Limited

Zhuoran Zeng

Shiwei Xu

Nick Birbilis

Pijun Zhang

Weineng Tang

Mingzhe Bian

Jianfeng Nie

Christopher H J Davies

Jian-Feng Nie

Christopher Huw John Davies

Christopher Hj Davies

The present invention provides magnesium or magnesium alloys having high formability at room temperature, the magnesium or magnesium alloys having a grain size ≤2 microns. The present invention also provides a method for manufacturing the magnesium or magnesium alloys having high formability at room temperature. The magnesium or magnesium alloys having high formability at room temperature are prepared by simple processing means. The present invention overcomes a problem of poor formability at room temperature.

Magnesium or magnesium alloy having ultra-high formability at room temperature and manufacturing method thereof

A method of strengthening a dilute magnesium alloy sheet includes providing a dilute magnesium alloy sheet, which includes a magnesium alloy consisting essentially of (wt %): &#x3e;0 to 3.0 of Zn; &#x3e;0 to 1.5 of Ca; 0 to 1.0 of Zr; 0 to 1.3 of a rare earth element or mixture of the same; 0 to 0.3 of Sr; 0 to 0.7 of Al, the balance of Mg and other unavoidable impurities, wherein the total weight % of alloying elements is less than 3%; subjecting the dilute magnesium alloy sheet to plastic deformation, in which the tensile plastic strain should exceed 0.5%, but be less than 8% to form a pre-deformed magnesium alloy sheets; and subjecting the pre-deformed magnesium alloy sheets to an ageing treatment in a temperature range of 80 to 250&#xb0; C. for at least 1 minute, thereby forming a strengthened magnesium alloy sheet.

Strain-induced age strengthening in dilute magnesium alloy sheets

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Clayton, Australia

Zhuoran Zeng