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前言Fe—C 合金在奥氏体化后,用大于临界冷速的速度进行冷却,就能获得马氏体。由于合金成份、奥氏体化温度、冷却速度或冷
Preface Fe-C alloys after austenitizing are cooled at a rate greater than the critical cooling rate to obtain martensite. Due to alloy composition, austenitizing temperature, cooling rate or cold