Amirkabir University of Technology Amirkabir Journal of Mechanical Engineering 2008-6032 52 3 2018 05 02 A Comparative Study on the Effect of Ultrasonic Vibration on Aluminum Surface Properties in Electrical Discharge Alloying A Comparative Study on the Effect of Ultrasonic Vibration on Aluminum Surface Properties in Electrical Discharge Alloying 657 668 2896 10.22060/mej.2018.13924.5755 FA Hadi Eivazi Bagheri Stu. Hamid Gorji Babol Noshirvani University of Technolog 0000-0003-2446-7839 Mohammad Reza Shabgard Department of Mechanical Engineering, University of Tabriz, Tabriz, Iran Salman Nourouzi Department of Mechanical Engineering, Noshirvani University of Technology, Babol, Iran Journal Article 2018 01 15 In this paper, considering the importance of surface integrity, effect of ultrasonic vibration of the Monel 400 electrode with a frequency of 20 kHz on the output parameters of the aluminum surface properties (surface hardness and wear resistance, thickness of the surface layer, the depth of copper and nickel diffusion to the aluminum surface and surface roughness) by the method of electrical discharge surface alloying has been studied. Based on the results of the scanning electron microscope images, the surface layer thickness in the combination of ultrasonic vibration with the electrical discharge alloying process is more than the non-vibration mode. Therefore, increasing the thickness of this layer increases the surface wear resistance. Also, the micro hardness test results show that surface hardness of the aluminum has increased to 450 Vickers after the combination of ultrasonic vibration with the alloying process. According to the results of energy dispersive X-ray analysis, the diffusion depth of alloying elements (copper and nickel) is higher in ultrasonic electrical discharge alloying, So that the surface layer thickness is up to 50 microns. Also, based on the results of surface roughness measuring, ultrasonic vibrations reduce the aluminum surface roughness after surface alloying. In this paper, considering the importance of surface integrity, effect of ultrasonic vibration of the Monel 400 electrode with a frequency of 20 kHz on the output parameters of the aluminum surface properties (surface hardness and wear resistance, thickness of the surface layer, the depth of copper and nickel diffusion to the aluminum surface and surface roughness) by the method of electrical discharge surface alloying has been studied. Based on the results of the scanning electron microscope images, the surface layer thickness in the combination of ultrasonic vibration with the electrical discharge alloying process is more than the non-vibration mode. Therefore, increasing the thickness of this layer increases the surface wear resistance. Also, the micro hardness test results show that surface hardness of the aluminum has increased to 450 Vickers after the combination of ultrasonic vibration with the alloying process. According to the results of energy dispersive X-ray analysis, the diffusion depth of alloying elements (copper and nickel) is higher in ultrasonic electrical discharge alloying, So that the surface layer thickness is up to 50 microns. Also, based on the results of surface roughness measuring, ultrasonic vibrations reduce the aluminum surface roughness after surface alloying. https://mej.aut.ac.ir/article_2896_e8f2779682fd11fa2067beffc27a9192.pdf