MATERIAL EVALUATION OF D6ac STEEL EXTRUSION MECHANICAL AND METALLURGICAL PROPERTIES OF

摘要

1. Relatively uniform smooth tensile properties were obtained for the D6ac steel heat treated to 220-240 KSI regardless of grain directionality or location in the extrusion.n2. At the 260-290 KSI strength level the junction of legs of the extrusion displayed the highest ultimate strength.n3. The notch tensile (Kt - 5.7) strength of the extrusion in the longitudinal grain direction was equal to or slightly greater than the ultimate strength for both heat treat levels.