Thesis Defense – Muhammad Farhan Raza (MSME)

Muhammad Farhan Raza – MSC Mechanical Engineering

Prof. Dr. Güney Güven Yapıcı – Advisor

Date: 27.12.2022

Time: 16:30

Location: AB1 412

APPLICATION OF INTERLAYER FRICTION STIR SPOT WELDING ON 304 STAINLESS STEEL AND 6061 ALUMINUM ALLOY

Prof. Dr. Güney Güven Yapıcı, Özyeğin University

Asst. Prof. Dr. Altuğ Melik Başol, Özyeğin University

Asst. Prof. Dr. Mehmet İpekoğlu, Turkish-German University

Abstract:

Friction Stir Spot Welding (FSSW) is the modification of solid-state welding known as Friction Stir Welding (FSW). During recent years, FSSW have become the most commonly used welding technique in the automotive, aerospace, and various manufacturing industries. The FSSW process is the most suitable welding technique for joining such metals and alloys which cannot be welded using conventional fusion welding techniques. Despite the superiority of this technique, a keyhole that appears on the weld spot as a result of the pin of the tool is a serious issue and several researchers focused on resolving this problem which results in the development of a novel technique called Interlayer Friction Stir Spot welding (IL-FSSW) which is developed in the Manufacturing Technologies Laboratory within MEMFIS at Ozyegin University. This study comprises of employment of IL-FSSW process in joining similar and dissimilar stainless steel and aluminum alloys. The keyhole-free weld joint has successfully been fabricated by utilizing this technique and this study elaborates on the zero effect of the welding parameters on the surface appearance of the weld spot. The utilization of a flat tip tool and intermediate layer helps to fabricate flat weld joints without a keyhole in comparison of conventional FSSW techniques.

Bio:

Muhammad Farhan Raza received his Bachelor’s degree in Material Science Engineering (Manufacturing) in 2018. Then, he worked at the same university as a lab engineer in Material Science and Manufacturing Department for 2 years. In 2020 he received a scholarship from Ozyegin University Istanbul Turkey to complete his Masters' studies in the Republic of Turkey. Currently, he perusing a Master’s degree in Mechanical Engineering under the supervision of Professor Dr. Yapici in MEMFIS research group. His research interest mainly concentrated on the implementation of a novel friction welding technique called Intermediate Layer Friction Stir Spot welding (IL-FSSW) on similar and dissimilar metal alloys.