http://www.iaeme.com/IJMET/index.asp 183 editor@iaeme.com International Journal of Mechanical Engineering and Technology (IJMET) Volume 8, Issue 2, February 2017, pp. 183–193 Article ID: IJMET_08_02_022 Available online at http://www.iaeme.com/IJMET/issues.asp?JType=IJMET&VType=8&IType=2 ISSN Print: 0976-6340 and ISSN Online: 0976-6359 © IAEME Publication EVALUATION OF PROCESSES PARAMETER AND MECHANICAL PROPERTIES IN FRICTION STIR WELDED STEELS Rajiv Ranjan Kumar Research Scholar, Mechanical Engineering, N.I.T. Jamshedpur, India Ashok Kumar Associate Professor, Metallurgical and Materials Engineering, N.I.T. Jamshedpur, India Shalendra Kumar Professor, Mechanical Engineering, N.I.T. Jamshedpur, India ABSTRACT The present study focuses on Friction Stir Welding of steel being very popular due to the vast application in the fields of automotive and ship building industries. The main constrained of welding steel has considered due to severe loads and temperatures at the interface of FSW tool and parent materials. Ti and pcBN based alloys are suitable for joining steel alloys up to 15 mm thick was found during study. Many researchers carried out study on FSW of steel and found on weld process parameters, mechanical properties, microstructure and the tool employed to produce the weld. It was found that carbon content, welding speed as well as the rotational speed affects between the mechanical properties and the microstructure of the weld. Key words: Friction Stir Welding, Processes parameter, Tool geometry, mechanical properties, Microstructure. Cite this Article: Rajiv Ranjan Kumar, Ashok Kumar and Shalendra Kumar. Evaluation of Processes Parameter and Mechanical Properties in Friction Stir Welded Steels. International Journal of Mechanical Engineering and Technology, 8(2), 2017, pp. 183–193. http://www.iaeme.com/ijmet/issues.asp?JType=IJMET&VType=8&IType=2 1. INTRODUCTION In recent decade, the weight saving of automobile and ship building is one of the important parameter favoring the reduction in the energy consumption and hazardous emissions. As structural steel is strengthen by the addition of rare metals such as Ni and Mo. The tensile strength of structural steel can be increased by the addition of the amount of carbon content. So, it can be concluded that rare metals can be replaced by much cheaper carbon content [1, 2]. The Friction stir welding (FSW) is a novel solid state joining process developed in 1991 by The Welding Institute, Cambridge, UK. The FSW process is performed at much lower temperature than the conventional welding due to no melting behavior. It also allows to avoid environmental and safety issues [3, 4]. Therefore it has wide application potential in ship building, aerospace, automobiles and other manufacturing industries. With the development of FSW and highly durable rotating tools, this