Investigation on microstructure and tensile properties of dissimilar weld joints between AISI 316l and duplex 2205 stainless steel

2nd International conference on Advances in Mechanical Engineering

Tumu, Dhananjay Parashar^1 ; Subramani, P.^1 ; Gokul Kumar, K.^1 ; Manikandan, M.^1 ; Mohan, C.G.^1 ; Arivazhagan, N.^1 ; Rajan, Deva N.^2

School of Mechanical Engineering, Vellore Institute of Technology, Vellore, India^1

Delta Weartech Engineers, Chennai, India^2

关键词: Dissimilar weld joint;    Dissimilar welding;    Duplex 2205;    Ferritic structures;    Fusion zones;    Mechanical characterizations;    Optical microstructures;    Pulsed current gas tungsten arc welding;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/402/1/012075/pdf
DOI  :  10.1088/1757-899X/402/1/012075

来源: IOP

【 摘 要 】

The present study investigates the dissimilar weld joints between AISI 316L and Duplex 2205 stainless steel. The joints were fabricated with the Pulsed current gas tungsten arc welding with ER316L and ER309L filler wire. The weld joints were subjected to metallurgical and mechanical characterization. The macro examination and optical microstructure examination were carried out to see the defect in the weld joints and structural changes in the fusion zone. The results show that the defect free welding was achieved in the both the filler wire. The optical microstructure shows the ferritic structure in both filler wire. The strength of the weld joints was tested with the tensile test. The results indicate the fracture occurred in the base metal in both cases.