چکیده مقاله
Friction Stir Processing FSP is known as a solid state process with a significant capacity of fabricating fine grained surface composites from Aluminum metal matrix In this work, we used Graphite particles 20 50 μm as reinforcing secondary phase in AL1050 matrix, in order to improve mechanical properties throughout this process Graphite particles preplaced into machined grooves in the middle of the aluminum1050 sheet and multi passed FSP applied The microstructure of the composites examined byusing optical microscopy OM and scanning electron microscopy SEM It identified that Graphite particles were well dispersed in the Aluminum matrix throughout the multipassed FSP In addition, the average grain size of the stir zone decreased due to dynamic recrystallization during the high temperature severe plastic deformation Tensile tests and microhardness measurement showed that, with the increase of graphite particles content, the tensile strength and microhardness of the Graphite/AL1050 composites remarkably increased, on the contrary, the elongation decreased due to brittle nature of the graphite particles The maximum ultimate tensile strength reached up to 193 MPa and the microhardness enhanced to 74 4 HV when 3 Wt % Graphite were added In addition, the composite became more and more brittle when the weight percent of the Graphite content increased
کلیدواژهها
نویسندگان
Hossein Keshavarz
M Sc Student, Sharif university of Technology, Tehran, Iran; hossein
Amirhossein Kokabi
Professor, Department of Materials Science and Engineering, Sharif University of Technology, Tehran,Iran
شیوه ارجاع
Keshavarz, Hossein and Kokabi, Amirhossein,1399,Microstructure and mechanical properties of Graphite reinforced aluminum matrix composites fabricated by multi-passed friction stir processing (FSP),3rd International Conference on Welding and Non-Destructive Testing of Iran, 21st National Conference on Welding and Inspection and 10th National Conference on Non-Destructive Testing,Isfahan
ارائهشده در
مجموعه مقالات سومین کنفرانس بین المللی جوشکاری و آزمایش های غیرمخرب ایران، بیست و یکمین کنفرانس ملی جوش و بازرسی و دهمین کنفرانس ملی آزمایش های غیرمخرب13 اسفند 1399 · اصفهان