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制备体积分数分别为0、1.5％、3％、5％和10％B4C颗粒增强Mg金属基复合材料,研究其力学性能和磨损行为.在450℃和不同加载速率下,分别采用分离式霍普金森棒(SHB)、锻锤(DH)和Instron(QS)制备Mg-B4C样品,其应变速率分别为1600、800和0.008 s-1.研究Mg-B4C复合材料的显微硬度、准静态及动态抗压强度等力学性能和磨损性能.结果显示,SHB和DH样品的硬度分别比QS样品高20.2％和5.7％.SHB法制备的Mg-10.0％B4C样品的磨损率和磨损质量损失分别比QS样品的低33％和39％.与纯Mg相比,SHB、DH和QS制备的Mg-5.0％B4C样品的准静态抗压强度分别提高39％、30％和29％.此外,含B4C样品的动态抗压强度比准静态抗压强度提高51％～110％.“,”The present study aims to fabricate and evaluate the mechanical properties and wear behavior of Mg metal matrix composite, reinforced by 0, 1.5, 3, 5 and 10 vol.％ B4C microparticles. Mg-B4C samples were fabricated at 450 ℃ and under different loading rates by using split Hopkinson bar (SHB), drop hammer (DH) and Instron (QS) at strain rates of 1600, 800 and 0.008 s-1, respectively. The mechanical properties including microhardness, quasi-static and dynamic compressive strengths and wear behavior of samples were experimentally investigated. The results show that, the hardness of SHB and DH samples is obtained to be 20.2％ and 5.7％ higher than that of the QS sample, respectively. The wear rate and wear mass loss of Mg-10.0％B4C samples fabricated by SHB were determined lower than those of the QS sample by nearly 33％ and 39％, respectively. The quasi-static compressive strengths of Mg-5.0％B4C are improved by 39％, 30％ and 29％ for the SHB, DH and QS samples, respectively, in comparison with the case of pure Mg. Furthermore, it is discovered that the dynamic compressive strength of samples is 51％-110％ higher than their quasi-static value with respect to the B4C content.