| 摘要 |
Method of spheroidizing annealing of hypo-eutectoid low alloy steel, wherein a hot rolled steel typical comprising ferrite and a high carbon phase such as pearlite or martensitic/bainitic microstructural constituents a) is heated to a temperature between A1 and A3 until austenitic domains with higher carbon content than the base composition has been created, b) the temperature is lowered and held under A1 to enable the austenite to transform into ferrite and carbides, c) the temperature is held under A1 until a desired degree of spheroidizing of the carbide is obtained. <IMAGE> |
