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一、绪言我们对经过各种热处理的低碳钢的低温脆性进行了研究,结果了解到从适当的温度急冷可使晶粒均匀而细化,同时显著提高冲击韧性,降低冲击韧性转变温度,而
I. INTRODUCTION We studied the low temperature brittleness of low carbon steels after various heat treatments and found that quenching from the proper temperature can make the grains uniform and fine, and at the same time significantly improve the impact toughness and reduce the impact toughness transition temperature.