Microstructure Characterization of Al-TiC Surface Composite Fabricated by Friction Stir Processing

[摘要] Titanium carbide (TiC) is an exceedingly hard and wear refractory ceramic material. The surface properties of the material are very important and the corrosion, wear and fatigue resistance behaviour determines its ability and applications. It is necessary to modify the surface properties of the materials to enhance their performance. The present work aims on developing a new surface composite using commercially pure aluminum and TiC reinforcement powder with a significant fabrication technique called friction stir processing (FSP). The metal matrix composite of Al/TiC has been developed without any defects formation to investigate the particles distribution in the composite, microstructural changes and mechanical properties of the material. The microstructural observations exhibited that the grain refinement in the nugget compared to the base metal and FSP without TiC particles. The developed composite properties showed substantial improvement in micro-hardness, friction factor, wear resistance and microstructural characteristics in comparison to parent metal. On the other side, the ductility of the composite specimens was diminished over the substrate. The FSPed specimens were characterised using X-ray diffraction technique and revealed that the formation of AlTi compounds and the presence of Ti phases in the matrix. The microstructures of the samples illustrated the uniform distribution of particles in the newly developed metal matrix composite.

[发布机构] Department of Mechanical Engineering, Satya Institute of Technology and Management, Andhra Pradesh; 535002, India^1;Department of Metallurgical and Materials Engineering, National Institute of Technology Tiruchirappalli, Tamil Nadu; 620015, India^2;Department of Mechatronics Engineering, Kyungsung University, Busan; 48434, Korea, Republic of^3;Department of Industrial and Manufacturing Engineering and Technology, Bradley University, IL; 61625, United States^4;A Division of Methode Electronics Malta Ltd., Hetronic USA, OK; 73112, United States^5;Department of Mechanical Engineering, MVGR College of Engineering, Andhra Pradesh; 535005, India^6;Department of Mechanical Engineering, Marri Laxman Reddy Institute of Technology and Management, Telangana; 500043, India^7

[效力级别] 机械制造

[关键词] Commercially pure aluminum;Friction stir processing;Micro-structural characteristics;Micro-structural observations;Microstructural changes;Microstructure characterization;Refractory ceramic materials;X-ray diffraction techniques