Liu Huawei, Li Jing, Zhang Jingyao, Gong Pan, Yang Wei, Zhao Lichen, Wang Xin
Hebei Key Laboratory of New Functional Materials, School of Material Science and Engineering, Hebei University of Technology, No. 5340, Xiping Road, Beichen District, Tianjin 300401, China.
State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
Materials (Basel). 2023 Jul 28;16(15):5323. doi: 10.3390/ma16155323.
Ti-based bulk metallic glass (BMG) alloys have attracted widespread attention due to their strong glass forming ability, high specific strength, and good corrosion resistance. However, the poor plasticity of BMGs limits their further application in the aerospace and aircraft fields, as well as others. We optimized the composition of SiC-reinforced, Ti-based metallic glass matrix composites (MGMCs) through finite element modeling (FEM). FEM of MGMCs containing irregularly shaped SiC particles with different contents was conducted. Stress and strain analyses were conducted to evaluate the effect of the particle volume fraction on the mechanical behavior of MGMCs, and an optimization value of 30% was obtained, which is conducive to plasticity improvement. Arc melting copper mold injection casting was used to verify the optimized SiC content. The results show that the electroless nickel plating treatment effectively improves the wettability between SiC particles and the amorphous matrix, enabling the successful preparation of SiC/MGMC with a volume fraction of 29.5% through traditional injection casting. The volume fraction of SiC plays a crucial role in the transition of fracture mode from splitting to shear in MGMCs. After adding lightweight SiC particles, the yield strength, plasticity, modulus, and specific strength were improved by 25%, 1471%, 46%, and 33%, indicating that the use of nickel-plated SiC particles in MGMCs is an effective strengthening and toughening method for BMGs.
钛基块状金属玻璃（BMG）合金因其强大的玻璃形成能力、高比强度和良好的耐腐蚀性而受到广泛关注。然而，BMG的塑性较差，限制了它们在航空航天和飞机领域以及其他领域的进一步应用。我们通过有限元建模（FEM）优化了碳化硅增强钛基金属玻璃基复合材料（MGMC）的成分。对含有不同含量不规则形状碳化硅颗粒的MGMC进行了有限元建模。进行了应力和应变分析，以评估颗粒体积分数对MGMC力学行为的影响，并获得了30%的优化值，这有利于塑性的提高。采用电弧熔炼铜模注射铸造来验证优化后的碳化硅含量。结果表明，化学镀镍处理有效地改善了碳化硅颗粒与非晶基体之间的润湿性，从而能够通过传统注射铸造成功制备体积分数为29.5%的碳化硅/MGMC。碳化硅的体积分数在MGMC的断裂模式从劈裂转变为剪切中起着关键作用。添加轻质碳化硅颗粒后，屈服强度、塑性、模量和比强度分别提高了25%、1471%、46%和33%，这表明在MGMC中使用镀镍碳化硅颗粒是一种有效的BMG强化增韧方法。
