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日本特开昭61—250109A。加热钢铁零件至高于A_1点奥氏体稳定温度,在加热条件下在零件表面渗入或扩散金属或非金属元素。然后快速冷却零件至贝氏体化
Japanese Patent Laid-Open No. 61-250109A. Heating steel parts to a stable temperature above the austenite point A_1, infiltrating or diffusing metallic or non-metallic elements on the surface of the part under heating. Then quickly cool the part to bainite