Effect of Pressure and Welding Time on Physical and Mechanical Properties of Dissimilar Metal AISI 316 Austenitic Stainless Steel and AISI 4140 Allow Steel Joints using Friction Welding
Bambang Margono, Haikal*, Harlita Indra Atmaja, Joko Wibowo
Faculty of Mechanical Engineering, Akademi Teknologi Warga Surakarta
Jalan Raya Solo-Baki Km. 2, Kwarasan , Solo Baru, Sukoharjo 57552, Indonesia
*basalamahhaikal3[at]gmail.com
Abstract
Friction welding is one of the solid-state welding processes that is capable of producing high quality joints for dissimilar materials. This study aims to determine the effect of pressure and welding time on the physical and mechanical properties of friction welding joints of AISI 316 and AISI 4140. The physical are microstructure on interface joint and dimension of flash was investigated. The variation of friction pressure used is 50 kg/cm², 70 kg/cm² and 90 kg/cm², while the time variations used are 35 seconds, 50 seconds and 65 seconds. The results of this study indicate that the greater the friction pressure and friction time applied, the greater the tensile strength achieved is 27.31 KN/mm². The effect of increasing friction pressure variations can reduce the value of weld joint hardness, but conversely if the friction time increases, the hardness value in the weld joint area will also increase. It was proven that in the variation of the minimum friction pressure the hardness achieved was 530.5 HVN but the maximum friction pressure variation only reached 352.2 HVN. The greater the friction pressure and friction time applied, the greater flash produced, which is 8.9 mm.
Keywords: Friction welding; Dissimilar metals; AISI 316 austeitic stainless steel; AISI 4140 steel; Physics; Mechanical properties
Topic: Mechanical Engineering