粉末冶金制备SiC_p增强Al基复合材料及其性能
发布时间：2018-08-20 12:48
【摘要】：采用粉末冶金法制备了亚微米SiC_p增强Al基复合材料,通过扫描电镜(SEM)观察复合材料的微观结构。结果表明,随着亚微米SiC_p的体积分数增加,Al基复合材料的相对密度减小,硬度和摩擦因数增大,抗拉强度先增大后减小,同时复合材料的磨损量先减小后增大。当亚微米SiC_p的体积分数为6.0%时,Al基复合材料具有最大的抗拉强度,磨损量较小。当添加少量亚微米SiC_p时,由于SiC_p本身具有较高的硬度和强度,可承受一定的载荷,对晶界的滑移具有阻碍作用,从而通过颗粒强化作用提高Al基复合材料的力学性能和磨损性能。
[Abstract]:Submicron SiC_p reinforced Al matrix composites were prepared by powder metallurgy. The microstructure of the composites was observed by scanning electron microscope (SEM). The results show that with the increase of the volume fraction of submicron SiC_p, the relative density of Al matrix composites decreases, the hardness and friction coefficient increase, the tensile strength increases first and then decreases, and the wear capacity of the composites decreases first and then increases. When the volume fraction of submicron SiC_p is 6.0, the Al matrix composite has the largest tensile strength and less wear. When a small amount of submicron SiC_p is added, because of the high hardness and strength of SiC_p itself, it can withstand certain loads, which hinders the slip of grain boundary. The mechanical properties and wear properties of Al matrix composites were improved by particle strengthening.
【作者单位】： 湖北汽车工业学院材料科学与工程学院;东风汽车零部件有限公司东风粉末冶金公司;
【基金】：湖北省教育厅科学技术重点资助项目(D20141801)
【分类号】：TB333
[Abstract]:Submicron SiC_p reinforced Al matrix composites were prepared by powder metallurgy. The microstructure of the composites was observed by scanning electron microscope (SEM). The results show that with the increase of the volume fraction of submicron SiC_p, the relative density of Al matrix composites decreases, the hardness and friction coefficient increase, the tensile strength increases first and then decreases, and the wear capacity of the composites decreases first and then increases. When the volume fraction of submicron SiC_p is 6.0, the Al matrix composite has the largest tensile strength and less wear. When a small amount of submicron SiC_p is added, because of the high hardness and strength of SiC_p itself, it can withstand certain loads, which hinders the slip of grain boundary. The mechanical properties and wear properties of Al matrix composites were improved by particle strengthening.
【作者单位】： 湖北汽车工业学院材料科学与工程学院;东风汽车零部件有限公司东风粉末冶金公司;
【基金】：湖北省教育厅科学技术重点资助项目(D20141801)
【分类号】：TB333
【参考文献】
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1 沈茹娟;胡旺;郭柏松;宋e，
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