Magnesium Alloy Sheet with Low Gd Content, High Ductility and the Hot Rolling Technology Thereof

摘要

The present invention discloses a magnesium alloy sheet with low Gd content and high ductility and its hot rolling technology, which belongs to the field of metal material technology. The chemical components of the magnesium alloy sheet, based on the mass percent, take up respectively: 0.9˜2.1% as Zn, 0.2˜0.8% as rare earth element, namely Gd, 0˜0.9% as Mn, and the rest as Mg. The magnesium alloy sheet of the present invention is added with relatively lower rare earth element, Gd, which reduces the alloy costs; in addition, magnesium alloy has good rolling performance, which can realize continuous, multi-pass and large-deformation rolling, and also ensure the sheets rolled have non-basal texture and high room-temperature elongation which reaches 35˜50%, wherein the elongation, δ, in the rolling direction is no less than 35% and that in the horizontal direction no less than 45%.

主权项

1. A magnesium alloy sheet with low Gd content and high ductility, wherein the sheet belongs to Mg—Zn—Gd series and calculated as per mass percent, with chemical components: 0.9˜1.9% Zn, 0.4˜0.8% Gd, 0˜0.9% Mn and the rest is Mg;
the room-temperature elongation of the sheet is 35˜50%. and the elongation in the rolling direction is ≧35% and that in the horizontal direction ≧45%.