Mechanical and microstructural testing of C-45 material welded by using SMAW and GMAW process

Abstract

Welding is commonly used for joining of metals and alloys at cost-effective ways in various industries. In present exploration, tensile testing, microstructural analysis and dye penetration test (DPT) was done on C45 (AISI 1045) alloy. The main objective is to generate the weldability of C45 alloy. There was pre and post weld heat treatment (PWHT) on the C45 material. In the existing work, Gas Metal Arc Welding (GMAW) and Shielded Metal Arc Welding (SMAW) processes were used. The selection of the electrodes and welding sample preparation is according to American Society for Welding (ASW) clauses A5.1 and A5.5 and the American Society of Mechanical Engineers (ASME) pressure vessel codes. There were 3 types of electrodes namely as E7018, E9018 and ER70S-6 electrodes for welding of specimen and achieved the comparison between them. The work concluded in the achieving the tensile properties, microstructural property and DPT for different types of welding and different types of electrodes on the specimen of 16 mm thick plate of C45 (AISI 1045) and is appropriate to all the industries.