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高铬铸铁广泛地应用于磨料介质中工作的铸件。高铬铸铁县有很高的耐磨性,首先是由于其组织中存在有大量的含铬碳化合物。碳当量CE为4.2～4.3％的合金具有最好的耐磨性,在此种合金中,含有数量最多的分枝状共晶碳化物Cr_7C_3继续提高碳和铬的合金化时,在组织中将会出现粗大、针状的铬的一次碳化物。使其与金属基体的联系削弱,因而会急剧降低高铬铸铁的机械性能和耐磨性。此种情况阻碍了高铬铸铁依靠
High-chromium cast iron is widely used in abrasive media work castings. High chromium cast iron county has a high wear resistance, first of all due to the presence of a large number of chromium-containing carbon compounds in its organization. The alloy with carbon equivalent CE of 4.2 ~ 4.3% has the best wear resistance. In the alloy containing the largest amount of branched eutectic carbide Cr_7C_3, when the alloying of carbon and chromium continues to be improved, There will be coarse, needle-shaped primary carbides. Weakened its connection with the metal matrix, which drastically reduced the mechanical properties and wear resistance of high chromium cast iron. This situation hindered the high-chromium cast iron from relying