【摘要】：采用粉末冶金法制備了亞微米SiC_p增強Al基復合材料,通過掃描電鏡(SEM)觀察復合材料的微觀結構。結果表明,隨著亞微米SiC_p的體積分數(shù)增加,Al基復合材料的相對密度減小,硬度和摩擦因數(shù)增大,抗拉強度先增大后減小,同時復合材料的磨損量先減小后增大。當亞微米SiC_p的體積分數(shù)為6.0%時,Al基復合材料具有最大的抗拉強度,磨損量較小。當添加少量亞微米SiC_p時,由于SiC_p本身具有較高的硬度和強度,可承受一定的載荷,對晶界的滑移具有阻礙作用,從而通過顆粒強化作用提高Al基復合材料的力學性能和磨損性能。
[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.
【作者單位】： 湖北汽車工業(yè)學院材料科學與工程學院;東風汽車零部件有限公司東風粉末冶金公司;
【基金】：湖北省教育廳科學技術重點資助項目(D20141801)
【分類號】：TB333

【參考文獻】

相關期刊論文 前10條

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本文編號：2193656