Effect of Welding Parameters in the Microstructure and Mechanical Properties of Friction-Welded Joints of ۱۰۰Cr۶ Steel

In this study, high-carbon, chromium alloy steel (۱۰۰Cr۶) having the initial spheroidized microstructure was welded using the rotary friction welding method. The effects of process parameters such as friction time and friction force were experimentally investigated. The friction welded joints were produced of two ۱۰۰Cr۶ steel rods. In order to examine the microstructure and mechanical properties of the friction welded ۱۰۰cr۶ steel joints, tensile and hardness tests were conducted. The microstructure of weld zone was examined by optical microscopy. It was found that after cooling, martensitic structure is obtained at the core and periphery of the weld joint. It was found that the tensile strength of friction welded samples is increased with increasing time and force of friction up to a certain level and then decreases again. Hardness measurements show a higher hardness at the centre of the weld joint in comparison with its periphery.

کلیدواژه ها:

Rotary friction welding ، ۱۰۰Cr۶ steel ، Heat Affected Zone ، mechanical properties ، microstructure.