本研究以ZK60鎂合金做為基材，分別添加1.0 wt%、3.0 wt%、5.0 wt% Al0.5CoCrFeNi2Ti高熵合金，其製程以攪拌鑄造法來形成鎂基複合材料之鑄錠，並對其成份、顯微結構、機械性質做觀察分析，探討添加不同比例Al0.5CoCrFeNi2Ti之高熵合金對ZK60鎂合金有其影響。
研究表明，與ZK60相比，添加高熵合金具有晶粒細化的效果。晶粒尺寸從121.3 μm降低到96.4 μm。由於MgZn2的存在，ZK60添加高熵合金後硬度值顯著提高，從原先的HV0.1 78.4增加至HV0.1 113.9。拉伸試驗結果顯示，極限抗拉強度從156.3 MPa增至235.2 MPa，延伸率從2.12%增至4.43%。斷口分析表明，ZK60含有河流狀和韌窩狀組織，而加入高熵合金後之斷口呈現微小的杯錐狀破裂形貌。綜合以上結果，添加5 wt.%的Al0.5CoCrFeNi2Ti對於ZK60具有最佳的機械性能。

In this research, ZK60 magnesium alloy was used as the base material, and 1.0 wt.%, 3.0 wt.% and 5.0 wt.% of Al0.5CoCrFeNi2Ti high entropy alloy was added to form magnesium-based composites of ingots by stir casting method in the process, and the composition, microstructure, and mechanical properties were analyzed for the purpose of exploring the effect of the high entropy alloys of adding different proportions of Al0.5CoCrFeNi2Ti on the casting of ZK60 magnesium alloy. entropy alloy with different proportions of Al0.5CoCrFeNi2Ti has its effect on ZK60 magnesium alloy.
The study shows that the addition of high entropy alloy has the effect of grain refinement compared with ZK60. The grain size decreases from 121.3 μm to 96.4 μm. Due to the presence of MgZn2, the hardness value of ZK60 increases significantly after the addition of high-entropy alloy from the original HV0.1 78.4 to HV0.1 113.9. The tensile test results show that the ultimate tensile strength increases from 156.3 MPa to 235.2 MPa, and the elongation increases from 2.12% to 4.43%. The elongation increased from 2.12% to 4.43%. The fracture analysis shows that ZK60 contains river-like and ligamentous organization, and the fracture of ZK60 with the addition of high entropy alloy shows a tiny cup-and-cone rupture morphology. Summarizing the above results, the addition of 5wt.% of Al0.5CoCrFeNi2Ti has the best mechanical properties for ZK60.

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