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Mechanical and Wear Properties of High Rate NiAl Particle-Reinforced Al Composites Produced by Pressure Infiltration Method
International Journal of Metalcasting ( IF 2.6 ) Pub Date : 2021-01-13 , DOI: 10.1007/s40962-020-00564-6
Hüseyin Demirtaş , Ramazan Yildiz , Engin Çevik

In this study, Al matrix composites reinforced by the high amount of NiAl (40%) were produced by the pressure infiltration method. Commercially AA1050 (99.59 %) was used as matrix material and NiAl (at. 1:1) particles were used as reinforcement. Also, a small amount of Mo (wt. 2%) was added into NiAl for a better matrix–particle interface and to increase the mechanical properties. The proportion of particles was kept constant, and their sizes were changed from 45 to 125 µm. The microstructures were examined by SEM, and formed phases were determined by EDS and XRD analysis. Mechanical properties and wear behavior were determined by compression, hardness, and abrasion tests. As a result of these tests, it was determined that composites were produced successfully. It was determined that compressive strength increased with decreasing particle size. And also, small particle size composites showed higher wear resistance.



中文翻译:

压力渗透法制备高速率NiAl颗粒增强Al复合材料的力学和磨损性能

在这项研究中,通过压力渗透法制备了由大量NiAl(40%)增强的Al基复合材料。商业上将AA1050(99.59%)用作基质材料,将NiAl(1:1)颗粒用作增强材料。另外,向NiAl中添加了少量Mo(wt。2%),以实现更好的基体-颗粒界面并提高机械性能。颗粒的比例保持恒定,其尺寸从45微米更改为125微米。通过SEM检查微观结构,并且通过EDS和XRD分析确定形成的相。机械性能和磨损行为由压缩,硬度和耐磨性测试确定。这些测试的结果是,确定了复合材料的生产成功。可以确定的是,抗压强度随着粒径的减小而增加。

更新日期:2021-01-13
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