《Table 2.Macrohardness and microhardness of the tested steels》

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《Feasibility of new ladle-treated Hadfield steel for mining purposes》

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Macrohardness determinations were performed on samples from the four heats.We observed that the hardness of ladle-treated Hadfield steels H3 and H4 is similar to that of the conventional heat-treated Hadfield steel H2.By contrast，the hardness of the as-cast Hadfield steel is twofold higher than that of either the ladle-treated（H3）or heat-treated（H2）Hadfield steel，as given in Table 2.The highest macrohardness observed for the as-cast Hadfield steel（H1）is attributed to the formation of needle-network cementite as a secondary phase.