Method for reinforcing ZK60 magnesium alloy by adding Sc
A magnesium alloy and alloy technology, which is applied in the field of adding Sc to strengthen ZK60 magnesium alloy, can solve the problems of accelerating the industrial application of ZK60 magnesium alloy, low strength and plasticity, and achieve the improvement of tensile strength and yield strength. the effect of strength
Inactive Publication Date: 2011-01-26
CHONGQING UNIV
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Problems solved by technology
[0004] The purpose of the present invention is to solve the problem that the application of the existing ZK60 magnesium alloy is limited due to its low strength and plasticity, and proposes to improve its mechanical properties by adding rare earth Sc elements, thereby speeding up the industrial application of ZK60 magnesium alloy
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Embodiment 1
[0019] The Sc-containing ZK60 magnesium alloy of this embodiment includes the following components by weight percentage: Zn 5.9%, Zr 0.5%, Sc 0.1%, and the balance is Mg.
Embodiment 2
[0021] The Sc-containing ZK60 magnesium alloy of this embodiment includes the following components by weight percentage: Zn 6.0%, Zr 0.6%, Sc 0.2%, and the balance is Mg.
Embodiment 3
[0023] The Sc-containing ZK60 magnesium alloy of this embodiment includes the following components by weight percentage: Zn 6.0%, Zr 0.8%, Sc 0.4%, and the balance is Mg.
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Abstract
The invention discloses a method for reinforcing a ZK60 magnesium alloy by adding Sc, which is realized by adding a rare-earth element Sc into the ZK60 magnesium alloy. The method comprises the following concrete steps of: smelting and ingot making, homogenizing, hot-extruding, heat treatment and the like. Because of the addition of the Sc, crystalline grains of the ZK60 magnesium alloy is effectively refined, intergranular reticular precipitated phases become thin with uniform distribution, and thin and diffused particle-shaped precipitated phases are formed at a crystal boundary, and after the intergranular reticular precipitated phases and thin and diffused particle-shaped precipitated phases are subjected to homogenization, extrusion and heat treatment, the tensile strength of the alloy can reach 364MPa, the yield strength can reach 352MPa and the yield ratio is close to 1. Compared with the common ZK60 alloy, a product in the method has the tensile strength and the yield strength which are respectively improved by 39MPa and 67MPa, and thus, the tensile strength and the yield strength of the ZK60 magnesium alloy are obviously improved and the industrial application range of the ZK60 magnesium alloy is widened.
Description
technical field [0001] The invention relates to a method for strengthening ZK60 magnesium alloy by adding Sc, which belongs to the field of metal materials and metallurgy. Background technique [0002] Magnesium and magnesium alloys are the lightest materials in metal structural materials for engineering applications. They have low density, high specific strength, high specific stiffness, good casting performance, good shock absorption, good anti-magnetic properties, easy cutting and stable dimensions. It has the advantages of high stability and has good application prospects in the fields of aviation, transportation and electronics. [0003] Among wrought magnesium alloys, ZK60 magnesium alloy, as a typical representative of Mg-Zn-Zr wrought magnesium alloy, has a good combination of strength, plasticity and corrosion resistance, and its specific strength has exceeded some high-strength aluminum alloys, but Its strength and plasticity still cannot meet the requirements in ...
Claims
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Login to View More IPC IPC(8): C22C23/04C22C1/03C22F1/06
Inventor 潘复生刘婷婷王维青吴璐张喜燕杨明波
Owner CHONGQING UNIV