چکیده مقاله
Ceramic materials, owing to their high melting point, high hardness and strength, low thermal conductivity, and low coefficient of thermal expansion, are widely used as surface protective coatings and reinforcing materials for metallic components Laser cladding is one of the most important surface modification techniques, in which a high power laser beam is used to melt the deposited materials and produce a coating with a strong metallurgical bond to the substrate In this study, cobalt tungsten carbide composite coatings were fabricated by laser cladding on the widely used AISI 309 stainless steel For this purpose, a paste consisting of cobalt and tungsten carbide powders was first prepared and applied onto the surface of the steel substrate Subsequently, laser irradiation was carried out to fix the cobalt and tungsten carbide particles on the surface The microstructure and mechanical properties of the samples were investigated using microhardness testing, metallography, and scanning electron microscopy SEM/EDS SEM images revealed a uniform distribution of tungsten carbide particles within the cobalt matrix In addition, EDS analysis confirmed the presence of cobalt and tungsten carbide in the composite coating The highest microhardness value was obtained for the sample containing 3 wt % tungsten carbide, which was produced at a laser power of 150 W
کلیدواژهها
نویسندگان
Esmaeil Zeraati Zardkhooni
Ph D Student, Faculty of Technical and Engineering, Department of Materials Engineering, Islamic Azad University, Ahvaz Branch, Ahvaz, Iran
Ahmad Monshi
Faculty of Technical and Engineering, Department of Materials Engineering, Islamic Azad University, Ahvaz Branch, Ahvaz, Iran
Mehdi Azizieh
Faculty of Technical and Engineering, Department of Materials Engineering, Islamic Azad University, Ahvaz Branch, Ahvaz, Iran
شیوه ارجاع
Zeraati Zardkhooni, Esmaeil and Monshi, Ahmad and Azizieh, Mehdi,1404,Investigation of the Hardness of a Composite Cladding on 309 Stainless Steel by Laser Cladding,8th International Conference on Welding and Non Destructive Testing & 26th National Conference on Welding & Inspection & 15th National Conference on NDT & 4th National Conference on Additive Manufacturing,Tehran
ارائهشده در
مجموعه مقالات هشتمین کنفرانس بین المللی جوشکاری و آزمایش های غیرمخرب، بیست و ششمین کنفرانس ملی جوش و بازرسی، پانزدهمین کنفرانس ملی آزمایش های غیرمخرب و چهارمین کنفرانس ملی ساخت افزایشی20 بهمن 1404 · تهران