A. Khorram, A. Davoodi Jamalooei, A. Jafari,
Volume 3, Issue 2 (Journal OF Welding Science and Technology of Iran 2018)
Abstract
In this study, microstructural evaluation and mechanical properties of similar TLP bonded of Inconel 600 by using of BNi-2 interlayer were investigated. The bonding tests were carried out at 1050°C and 1100°C for 5-45 min which homogenization treatment was performed on the best of the bonded samples. Results showed that Ni-B eutectic compound was formed in the a-thermally solidification zone (ASZ) of the bonded sample at 1050°C. In addition to existence of the Ni-B compound, Cr-B was observed in the ASZ of the bonded sample at 1100°C. Ni-B and Ni-Cr-B were formed in the diffusion affected zone (DAZ). TLP bonded sample at 1050°C for 45min including discontinuous areas of ASZ in isothermal solidification zone (ISZ) was the best bonded sample. Homogenization process was carried out on this sample caused to elimination of the eutectic compounds, completely. Mechanical investigation revealed that due to existence of the intermetallic compounds in the ASZ and DAZ, value of hardness for this region were about 510 and 311 HV, respectively. Whit elimination of the intermetallic compounds by performing of homogenization treatment, mechanical properties of the boding region were improved.
M.m. Jafari, A. Afsari, S.a. Behgozin, Sh. Heidari,
Volume 8, Issue 2 (Journal OF Welding Science and Technology 2023)
Abstract
In this study, the mechanical and tribological properties of 4 different types of welding filler metals were examined on a 1.6959 steel (DIN35NiCrMoV12-5) by the Gas Tungsten Arc Welding process. The fillers used in this study include ER70S-6, ER80S-G, ER80S-Ni1, ER80S-B2. The main reasons for choosing these fillers in this study are their availability and close chemical composition to the base metal. To evaluate the weld and quality of weld joints, tensile, impact, hardness and abrasion tests performed on the samples and related microstructures was investigated by optical microscope. The results indicated that the presence of molybdenum and chromium alloying elements in ER80S-B2 filler and related microstructure at HAZ has led to an increase in weld strength up to 38 percent. The best and worst wear resistance obtained from the filler ER 80S-Ni1 and ER 70S-6 respectively. The best weld quality and mechanical properties were acquired in welding using ER 80S-B2 welding filler metal.
