高铬铸铁碳化物形貌的研究

Investigation of Carbide Morphology in High Chromium Cast Iron

研究了含铅9％～11％、含碳2．6％～3．6％的铸铁，并用稀土硅铁合金进行孕育，研究发现含碳量变化时析出的碳化物形貌不同，并用能谱分析了碳化物内的含铅量，发现碳化物内的含铬量达20％～50％。

This paper studied the high chromium cast iron which contains 9 % -11 % Cr and 2 .6 % -3. 6 % C. The high chromium cast irons were inoculated with RE - Si - Fe alloy. The results show that when the arnount of carbon has been changed, the carbide has a great variety of morphology. The percent age of chronlium in the carbide has been analyzed by SEM. Energy spectrum analysis revealed that contains 20 % - 50 % Cr in carbide.