Effect of High Temperatures on the Mechanical Properties of the Weld Metal in the Welded Joint of Low-Carbon Low-Alloy Steel

The mechanical properties of the weld metal in a welded joint of low-carbon low-alloy 22K steel are studied using uniaxial tensile tests in the temperature range from room temperature to 1200°C. The changes in the structures and the strength and plastic properties of the base metal and the weld metal in the temperature range are compared and analyzed.