【摘要】 对低铬铜白口耐磨铸铁(Cr1.5～2.0%,Cu0.5～1.0%),通过正火和等温淬火处理,改变网状碳化物的形貌、大小及分布,可大大提高其冲击韧性和硬度。结果表明,950%×1.5h加热正火,a_k值达7.25～9.9J/cm~2,硬度达54.3～56.1HRC;950℃×1.5h加热,290℃等温淬火,a_k值达11.92～14.6J/cm~2,硬度达52～55HRC。更多还原

【Abstract】 By nonmalizing and isothermal quenching so that the morphology.size and distribution of network carbides were changed, the impact toughness and hardness were obviously raised for white wear-resisting cast iron with low Cr and Cu.更多还原