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发明授权
CN106676357B 一种高塑性镁合金及其制备方法 有权

一种高塑性镁合金及其制备方法
摘要：
本发明公开了一种高塑性镁合金及其制备方法，该镁合金由以下质量百分含量的组分组成：Zn3~4%，Ca0.1~0.6%，Mn0.05~0.8%，其余为Mg和不可避免的杂质。本发明在镁锌合金中加入Ca和Mn能显著细化合金晶粒，并且在热挤压过程中能促进动态再结晶的发生，阻止再结晶晶粒的长大，从而同时改善合金的强度和塑性；还能显著弱化合金的基面织构，改善合金的塑性；另外第二相的析出和纳米级的Mn粒子弥散析出，可有效提高合金的强度；本发明的镁合金具有高塑性，成分优化后的合金延伸率可达到25~29.8%，屈服强度为160~205 MPa，抗拉强度为270~289MPa。
摘要（英）：

The invention discloses a high-plasticity magnesium alloy and a preparation method thereof. The magnesium alloy comprises the following components in percentage by mass: 3-4% of Zn, 0.1-0.6% of Ca, 0.05-0.8% of Mn, and the balance of Mg and inevitable impurities. Ca and Mn are added in a magnesium zinc alloy to prominently refine alloy grains; in hot extrusion process, the dynamic recrystallization can be promoted to stop growth of recrystallized grains, so that the strength and the plasticity of the alloy are synchronously improved, the base surface texture of the alloy can be prominently weakened, and the plasticity of the alloy is improved; in addition, through separation of a second phase and dispersion and separation of nanoscale Mn particles, the strength of the alloy can be effectively improved; the magnesium alloy is high in plasticity; and the component-optimized alloy can reach the ductility of 25-29.8%, the yield strength of 160-205 MPa and the tensile strength of 270-289 MPa.

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