Effect of magnesium and carbon on the ductility of alloy KhN56VMTYu

The Role of Magnesium in Superalloys—A Review

“…Tensile properties did not respond to the addition of Mg content while the tests were conducted at room temperature, 500˚C and 650˚C. High temperature tensile ductility of wrought heat resistant alloy EP 199, showed a consistency in ductility in the work of Topilin and Tsvetkeva [35]. A fairly high strength and ductility characteristics at 20˚C and 900˚C were obtained with Mg concentration of 150 -290 ppm.…”

“…The fracture surface analysis by SEM while conducting hot ductility testing showed ductile appearance at very low level of sulfur [35]. When sulfur increased the fracture surface appeared to be intergranular and sulfur was found on grain boundaries.…”