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本文对40Cr钢进行深冷处理.试验结果表明:深冷处理可以减轻第二类回头脆性,提高合金结构钢韧性.
In this paper, 40Cr steel is cryogenic treatment.The results show that: cryogenic treatment can reduce the second kind of back brittleness, improve the toughness of the alloy structural steel.