Abstract
On the two series of Cr3, W 10%and Cr3, W 5%, we studied the influences of C content on the followings: (1) The trangformation point; (2) The hardness and the microstructure after water quenched from 700-1300°C; (3) The hardness when tempered at the temperatures up, to 700°C after quenched from the various temperatures above described. From these data we constituted the phase diagrams which show tbe changes of phases by the C content at the bases of Cr 3, W 10% and Cr 3, W 5%.
