Prediction of Fracture Location of Duplex Stainless Steel Welds
Publication: Earth and Space 2022
ABSTRACT
The influence of heat input on the tensile-test fracture location of bead-on-plate welds duplex stainless using an automatic MIG welding machine was investigated. An experiment-based thermal analysis has been performed to obtain the thermal histories, which can be applied to determine the peak temperature for different welding conditions. The temperature distribution during the welding process significantly affects the mechanical and metallurgical properties of a weldment. The changes in microstructure in a weldment are very dependent on the temperature distribution. Based on these facts, this research aims to develop an analytical model for predicting the tensile-test fracture location of the welds varying heat input during the welding process. For this study, a 3×3 matrix with a low, medium, and high level for each of the welding parameters will be applied, giving a total of 27 weld bead plates. Temperature distribution curves have been drawn. Two tensile specimens were manufactured from each welded plate, resulting in 54 tensile specimens for testing. The results show that the fracture location measurements increase until a maximum of HI of 1.267 kJ/mm then decrease.
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Earth and Space 2022
Pages: 529 - 541
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Published online: Jan 5, 2023
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