【摘要】 本文用各种不同的加热温度和不同的冷却方式,对20A深冲弹钢中出现的各种铁素体形态进行了光学金相和电子金相的观察,经过分析表明,在含碳量一定的低碳钢中,铁素体的形态和冷却方式,冷却速度有关,并且这些形态大都符合Dubè所作的分类。本文根据铁素体片的形态讨论了它的形核和长大的机构学。更多还原

【Abstract】 The morphologg of ferrite of deep drawing scel 20A after different treatment has been studied by optical microscope and electron microscope. It was found that the morphology of ferrite is related to the cooling mode and the cooling rate.The morphology is in reasonable agreement with Dubes Classification. The mechanism of the nucleation and growth of ferrite was discussed.更多还原