Quantitative Evaluation of Structural Alloy Steel Banded Structure

详细

Quantitative estimation of structural banding in alloy steels 40KhN2MA, 38KhGMA, and 20KhN3A is performed. The dependence of anisotropy index according to GOST R 54570 (ASTM E 1268) on the steel bar diameter and sample selection position is determined. It is shown that there is a direct relationship between structural banding, specified by the anisotropy index and steel mechanical properties (scatter of the microhardness values and anisotropy of the impact strength).