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Structure and mechanical characterization of Mg-Nd-Zn alloys prepared by different processes

机译：不同工艺制备的Mg-Nd-Zn合金的结构和力学表征

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Magnesium alloys containing about 3 wt. % of Nd and 0.5 wt. % of Zn are considered as promising materials for application in transport and medical industry. Properly treated materials can reach ultimate tensile strength (UTS) higher than 300 MPa. Also the corrosion resistance of these alloys is superior to many other magnesium-based materials. Present work is focused on the preparation of Mg-3Nd-0.5Zn magnesium alloy by classical casting and subsequent thermal treatment. As-cast material was extruded at 400 °C, with extrusion ratio equal to 16 and velocity of 0.2 mm/s. The effect of thermal treatment and also strong plastic deformation during extrusion on final structure conditions and mechanical properties is specified. Present results confirm significant improvement of tensile yield strength (TYS) and UTS after extrusion process as a consequence of fine-grained structure combined with precipitation strengthening. Beside, texture strengthening in the direction parallel to the extrusion has been observed too.
机译：含有约3重量％的镁合金。 Nd和0.5重量％的％。 Zn的百分比被认为是在运输和医疗行业中申请的有希望的材料。适当处理的材料可以达到高于300MPa的最终拉伸强度（UT）。这些合金的耐腐蚀性也优于许多其他基于镁的材料。目前的工作专注于通过经典铸造和随后的热处理制备Mg-3nd-0.5Zn镁合金。浇铸材料在400℃下挤出，挤出比等于16和0.2mm / s的速度。指定了热处理的影响和在最终结构条件下挤出过程中的强塑性变形和机械性能。目前的结果证明了挤出过程后拉伸屈服强度（Tys）和UTS的显着提高，因为细粒结构与沉淀强化结合。除此之外，还观察到纹理强化平行于挤出的方向。

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