Liu Xinyu, Yin Hangboce, Xu Yi
School of materials Science & Engineering, Southwest Jiaotong University, Chengdu 610031, China.
Materials (Basel). 2017 Nov 15;10(11):1312. doi: 10.3390/ma10111312.
A novel metal matrix composite CrMnFeCoNi with Y₂O₃ as reinforcement phase was designed and manufactured by mechanical alloying and spark plasma sintering. After sintering at 900 °C for 5 min, the microstructure consisted of a FCC matrix and Y₂O₃ nanoparticles. The addition of 0.25 wt % Y₂O₃ increased the room temperature tensile strength of the CrMnFeCoNi base from 868 MPa to 1001 MPa, while the mechanical properties of the addition of 0.5 wt % Y₂O₃ composite decreased. In the meantime, the addition of Y₂O₃ had no significant influence on the coefficient of friction, while the addition of 0.25 wt % Y₂O₃ composite shows excellent wear-resistance.
设计并通过机械合金化和放电等离子烧结制备了一种以Y₂O₃为增强相的新型金属基复合材料CrMnFeCoNi。在900℃烧结5分钟后，微观结构由面心立方（FCC）基体和Y₂O₃纳米颗粒组成。添加0.25 wt%的Y₂O₃使CrMnFeCoNi基合金的室温抗拉强度从868 MPa提高到1001 MPa，而添加0.5 wt% Y₂O₃复合材料的力学性能则有所下降。同时，Y₂O₃的添加对摩擦系数没有显著影响，而添加0.25 wt% Y₂O₃的复合材料表现出优异的耐磨性。
