The effects of the extrusion temperature and extrusion ratio on the microstructure, corrosion resistance, and mechanical properties of Mg–Zn–Gd–Y–Zr alloy were investigated. The dynamically recrystallized grain sizes were found to increase with increasing temperature at a given extrusion ratio. At a smaller extrusion ratio, the alloys consist mainly of a bimodal grain structure. Although these have better ultimate tensile strength (UTS) and yield strength (YS), their elongation (EL) and corrosion resistance are not as good as those of the alloys with a larger extrusion ratio extruded at the same temperature. When the extrusion temperature reaches the higher range of 340–380 °C with an extrusion ratio of 12, the alloy has little bimodal structuring. The alloy extruded at 340 °C with an extrusion ratio of 12 had a uniform microstructure and exhibited relatively good corrosion resistance in addition to having good mechanical properties. The ways in which the mechanical properties of this alloy varied with the duration of corrosion through immersion in simulated body fluid were also studied. The rate of decline in the EL was significantly greater than that in the YS, and these were found to have half-life values of 20 days and 51 days, respectively.

研究了挤压温度和挤压比对Mg-Zn-Gd-Y-Zr合金显微组织、耐蚀性和力学性能的影响。发现动态再结晶晶粒尺寸在给定的挤压比下随着温度的升高而增加。在较小的挤压比下，合金主要由双峰晶粒结构组成。虽然它们具有更好的极限抗拉强度（UTS）和屈服强度（YS），但它们的延伸率（EL）和耐腐蚀性能不如在相同温度下挤出的具有较大挤压比的合金。当挤压温度达到 340-380°C 且挤压比为 12 时，合金几乎没有双峰结构。在 340 °C 下以 12 的挤压比挤压的合金具有均匀的显微组织，除了具有良好的机械性能外，还具有较好的耐腐蚀性能。还研究了这种合金的机械性能随着浸泡在模拟体液中的腐蚀持续时间而变化的方式。EL 的下降速度明显大于 YS，并且发现它们的半衰期值分别为 20 天和 51 天。