Three-Body Abrasive Wear Performance of ZTAp/40Cr Steel Architecture Composites with Three-Dimensional Interpenetrating Networks
The abrasive wear performanceof ZTAp(ZrO2 toughened Al2O3 particle)/40Cr steel composites with three-dimensional interpenetrating network with different volume fractions of the composite region and matrix hardness was studied.The volume fraction of the composite zone was 35％,50％and 65％,and the hardness of the matrix was 235.7 HV,326.5 HV and 627.3 HV,respectively,adjusted by heat treatment.The results show that,with the increase of the volume fraction,the wear resistance of ZTAp/40Cr steel composite with a 3D inter-penetrating network first increases and then decreases,the maximum is obtained at 50％,which is 7％and 24％higher than those of 35％and 65％,and 42％and 47％higher than the uniformly distributed composite and the matrix,respectively.With the increase of matrix hardness,the wear resistance of the composite also increases.The wear mechanism analysis of architecture composites shows that the composite zone plays a wear-resistant role during three-body abrasive wear,while the matrix zone can significantly improve the strength and plasticity of the composites,and prevent abnormal wear such as cracking and falling off.Their cooperation reflects the excel-lent wear resistance of the architecture composites.
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