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金属学报  1983 

硼钢淬透性与硼向奥氏体晶界的偏聚

, PP. 5-114

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Abstract:

用改进的径迹显微照相技术研究了50B钢800—1150℃顶端淬火试样中硼分布状态的变化规律及其与硼钢淬透性的关系。试验表明,硼钢淬透性的变化与冷却时硼向奥氏体晶界偏聚的发展速度密切相关。由硼的成分剖面图可定量测定出这种偏聚的发展速度。晶界硼偏聚发展过快或过慢均不利于硼提高淬透性的效应。只有当晶界硼偏聚的发展速度与基体成分相变孕育期相配合时,硼才能发挥最大效应。利用这种观点可以说明硼钢淬透性的变化特征,分析影响硼钢淬透性的各种因素。

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