Magidov Ilya, Mikhaylovskiy Konstanitin, Shalnova Svetlana, Topalov Ilya, Gushchina Marina, Zherebtsov Sergey, Klimova-Korsmik Olga
Department of Aerospace Composite Structures, Bauman Moscow State Technical University, 105005 Moscow, Russia.
World-Class Research Center "Advanced Digital Technologies", State Marine Technical University, 190121 Saint Petersburg, Russia.
Materials (Basel). 2023 Jul 25;16(15):5233. doi: 10.3390/ma16155233.
An important direction in the development of additive technologies is associated with the addition of ceramic particles (oxide, carbide, boride, and nitride ceramics) to metal powders. The prediction of the physical and mechanical characteristics of SiC-particle-reinforced composite materials (PRCMs) in comparison with experimental results was studied. A near-α Ti-4.25Al-2V titanium-alloy-based composite reinforced by 1 vol.% of SiC ceramic particles was produced using laser direct energy deposition. A multiscale modeling approach at the micro and macro levels was applied. At the micro level, the toughness and strength characteristics for a temperature interval of T = 20-450 °C were predicted using a representative volume element of PRCM with the nearly real shape of SiC particles. At the macro level, the features of plastic deformation and fracture of the PRCM were predicted by numerical modeling using the commercial software Digimat Student Edition ver. 2022.4 and Ansys Student 2023 R2. The addition of SiC particles was found to improve the physical and mechanical properties in the whole temperature range. The results of the numerical modeling were consistent with the experimental data (the deviation did not exceed 10%). The proposed approach for predicting the physical and mechanical properties of Ti-4.25Al-2V/SiC can also be used for other PRCMs obtained by laser direct energy deposition.
增材技术发展的一个重要方向与向金属粉末中添加陶瓷颗粒（氧化物、碳化物、硼化物和氮化物陶瓷）有关。研究了碳化硅颗粒增强复合材料（PRCM）物理和力学特性的预测并与实验结果进行比较。使用激光直接能量沉积制备了一种以近α型Ti-4.25Al-2V钛合金为基体、1体积%碳化硅陶瓷颗粒增强的复合材料。应用了微观和宏观层面的多尺度建模方法。在微观层面，使用具有近真实形状碳化硅颗粒的PRCM代表性体积单元预测了T = 20 - 450°C温度区间的韧性和强度特性。在宏观层面，使用商业软件Digimat Student Edition ver. 2022.4和Ansys Student 2023 R2通过数值模拟预测了PRCM的塑性变形和断裂特征。发现添加碳化硅颗粒可在整个温度范围内改善物理和力学性能。数值模拟结果与实验数据一致（偏差不超过10%）。所提出的预测Ti-4.25Al-2V/SiC物理和力学性能的方法也可用于通过激光直接能量沉积获得的其他PRCM。
