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脉冲电流对低碳微合金钢力学性能的影响

Keywords: 脉冲电流,低碳微合金钢,粒细化,学性能

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Abstract:

?研究了脉冲电流对一种低碳微合金钢的组织和力学性能的影响.结果表明,脉冲电流处理可以使该钢的晶粒显著细化,从而使其力学性能提高.细化后的组织热稳定性好,在400℃长时间保温不会出现晶粒长大.脉冲电流加热速度快,作用时间短和降低相变势垒的作用是晶粒细化的原因。

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