Abstract��On the basis of matrix composition calculation, quenching hardness can be written as ��HRC��=������(1+���ª�)/(0.00915��������0.00527) according to austenite compositions at some austenitizing temperature, where ������ is square root of carbon content in the matrix and ���ª� is correctness factor of alloy elements in the matrix. The before��mentioned formula for quenching hardness implies that there exists a relation of Rockwell hardness measurement with martensite strengthening. The formula is suitable for other steels. There is secondary hardening at high tempering temperature in the Cr��W��Mo��V high alloy steels. The highest hardness is related not only to the thermodynamic conditions of all types of carbides, but also to the progress of the residual austenite transformation. According to the austenite matrix composition at austenitizing temperature, both formula ��C����p��0.011W��0.02Mo��0.057Cr��0.19V and ��H����c=��a����1+��b����/(0.0127��a����0.00267) are brought forward, in which ��a�� is carbon saturation in the matrix, ��b�� is modified factor of the amount of carbides precipitation.
������;����;�ߺ���;������. Cr��W��Mo��V�Ͻ�ֵĴ��Ӳ�Ⱥͻػ�Ӳ�ȵļ���[J]. �й������ڿ���, 2007, 25(3): 15-0.
MA Yong��qing;ZHANG Yang;GAO Hong��tao;ZHU Bei��bei. Calculation of Quenching Hardness and Tempering Hardness for Cr��W��Mo��V Alloy Steels. Chinese Journal of Iron and Steel, 2007, 25(3): 15-0.
2007, Vol. 25 
