Effect of rare earth elements on microstructure and properties of high chromium white iron

Abstract

The influence of rare earth elements, such as cerium, lanthanum, and neodymium, on the microstructure and properties of high chromium white cast iron are examined. It has been demonstrated that rare earth elements can change the microstructural characteristics of white iron containing 18 wt-%Cr and that these elements improve its mechanical properties. The optimum content of cerium, lanthanum, and neodymium in high chromium white iron is 0·13–0·26 wt-%. The wear resistance of these alloys is improved by 10% in comparison with a basic alloy containing no rare earth elements, and there are no changes in fracture toughness.MST/1980