磨粒含量对共晶铝锰基复合材料抗冲蚀磨损特性的影响  

Effect of Abrasive Content on Erosion-abrasion Properties of Al-Mn Matrix Composite

作　　者：文锋[1] 刘炳[1] 吐尔逊·斯迪克[1] 

机构地区：[1]新疆大学机械工程学院,新疆乌鲁木齐830008

出　　处：《热加工工艺》2012年第16期109-112,共4页Hot Working Technology

基　　金：国家自然科学基金资助项目(50861008)

摘　　要：采用MSH型旋转冲蚀磨损试验机对比研究了磨料粒度、磨料含量对共晶成分铝锰合金及其复合材料的冲蚀磨损性能影响,分析了试样材料的组织特征及冲蚀磨损后磨痕形貌。结果表明:铝锰合金材料的铸态组织为锰在铝中的固溶体及铝锰化合物,而铝锰基复合材料中除与铝锰合金相近的基体上还存在着δ-Al2O3,且δ-Al2O3颗粒的加入改变了铝锰化合物在基体中的分布;试样材料的冲蚀磨损率随磨粒粒度增大呈先增大后减小趋势,峰值向粒度增大的方向偏移;冲蚀磨损率随磨粒含量加入量增加而增大;与铝锰合金相比铝锰基复合材料的冲蚀磨损率较低,因此其具有优良的抗冲蚀磨损特性。The effects of particle size and abrasive content on the erosion-abrasion properties of eutectic Al-Mn alloy and Al-Mn matrix composite were studied by MSH type erosion tester,and the microstructure and wear surface of sample material after erosion-abrasion were analyzed.The results show that,the Al-Mn alloy as-cast is composed of Al-Mn solid solution and Al-Mn compounds,while δ-Al2O3 particles are in the composite besides the aforementioned microstructure.δ-Al2O3 particles change the distribution of Al-Mn compounds in the matrix.The erosion rate of sample material firstly increases and then decreases while as the abrasive particle size increasing,and the peak shiftes to direction of the particle size increasing.The erosion rate increases with the increase of abrasive amount.Compared with the Al-Mn alloy,the Al-Mn alloy composite has lower erosion rate,so it has excellent resistance to erosion wear properties.

关 键 词：磨粒含量 铝锰基复合材料 冲蚀磨损率 

分 类 号：TB332[一般工业技术—材料科学与工程]