三维互穿网络结构ZTAp/40Cr钢复合材料的三体磨料磨损性能  

Three-Body Abrasive Wear Performance of ZTAp/40Cr Steel A rchitecture Composites with Three-Dimensional Interpenetrating Networks

作　　者：卢德宏[1] 冯家玮 LU Dehong;FENG Jiawei(Faculty of Materials Science and Engineering,Kunming University of Science and Technology,Kunming 650093,China)

机构地区：[1]昆明理工大学材料科学与工程学院,云南昆明650093

出　　处：《昆明理工大学学报（自然科学版）》2024年第4期43-49,共7页Journal of Kunming University of Science and Technology(Natural Science)

基　　金：国家自然科学基金项目(51461025)。

摘　　要：研究了不同复合区体积分数和不同基体硬度的三维互穿网络氧化锆增韧氧化铝颗粒(ZTAp)/40Cr钢复合材料的三体磨料磨损性能.复合区体积分数分别为35%、50%、65%.通过热处理调节使基体硬度分别为235.7 HV、326.5 HV和627.3 HV.结果表明:随着复合区体积分数的提高,三维互穿网络ZTAp/40Cr钢复合材料的耐磨性先升高后降低,50%的构型复合材料分别比35%和65%的复合材料提高7%和24%,比均匀分布复合材料和基体分别提高42%和47%.随着基体硬度的提高,复合材料耐磨性也提高.对复合材料的磨损机理分析表明,在三体磨料磨损时,复合区主要起到耐磨作用,而基体区可以明显提高复合材料整体强度和塑性,防止复合材料发生开裂、脱落等非正常磨损,二者相互配合体现出复合材料优异的耐磨性.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 interpenetrating 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 excellent wear resistance of the architecture composites.

关 键 词：构型复合材料 三体磨料磨损 耐磨性 体积分数 基体 

分 类 号：TB333[一般工业技术—材料科学与工程]