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采用粉末冶金工艺制备了玻璃纤维(GF)强化的Pb基复合材料(GF/Pb),并分析了GF尺寸及含量对复合材料的密度、显微组织及拉伸力学性能的影响。结果表明,随着GF含量的增加,复合材料的相对密度降低,50μm-GF强化的复合材料的相对密度高于300μm-GF强化的复合材料。低温(<200°C时)烧结所得复合材料呈现出细小均匀的显微组织,且GF均匀分布于Pb基体中。GF的加入显著提高了Pb基复合材料的强度,添加GF尺寸为50μm、质量分数为0.5%的Pb基复合材料比纯Pb的强度高约30 MPa。所有合成的复合材料中,随着玻璃纤维质量分数从0.5%增加到2%,复合材料的强度及拉伸应变均降低。
Glass fiber (GF) strengthened Pb matrix composites (GF / Pb) were prepared by powder metallurgy. The effects of GF size and content on the density, microstructure and tensile properties of the composites were also analyzed. The results showed that with the increase of GF content, the relative density of the composites decreased. The relative density of 50μm-GF composites was higher than that of 300μm-GF composites. The composite obtained by sintering at low temperature (<200 ° C) showed fine and uniform microstructure, and the GF was uniformly distributed in the Pb matrix. The addition of GF significantly enhanced the strength of Pb-based composites. The addition of GF with the size of 50μm and mass fraction of 0.5% was about 30 MPa higher than pure Pb. All composite materials, with the glass fiber mass fraction increased from 0.5% to 2%, the composite material strength and tensile strain are reduced.