Abstract：Using B4C particles and Mg ingot as raw materials, B4C/Mg composites with 30% B4C mass fraction for motor were prepared by reactive infiltration method. The micro structure and damping properties of materials prepared at different temperatures were analyzed and tested. The results show that the irregular B4C particles are evenly distributed in the matrix of B4C/Mg composites, and no macroscopic holes are formed. A white layer of carbide and boride is formed at the edge of B4C particles. Compared with the Mg matrix, the damping performance of B4C/Mg composite is significantly improved. With the increase of strain amplitude, the damping property of B4C/Mg composite material shows a change rule of slow increase first and then rapid increase. The lower the preparation temperature, the better the damping property of the material. The Cranato-lucke curve varies linearly in the amplitude of finite strain.
齐冠然. 反应浸渗法制备电动机用B4C颗粒增强Mg复合材料的组织及阻尼性能[J]. 粉末冶金材料科学与工程, 2019, 24(5): 474-477.
QI Guanran. Microstructure and damping properties of B4C particle reinforced Mg composites for motor fabricated by reactive infiltration method. Materials Science and Engineering of Powder Metallurgy, 2019, 24(5): 474-477.
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2019, Vol. 24 
