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V(C,N)在奥氏体中析出的动力学行为及其对晶粒细化的作用 被引量:4

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摘要 控制VN在奥氏体中的有效析出是利用VN诱导晶内铁素体细化铁素体晶粒的关键技术。本文采用应力松弛法研究了低碳钒氮微合金钢V(C,N)在奥氏体区的等温析出行为,结果表明,试验钢的析出-温度-时间(PTT)曲线呈典型的“C”形状,本实验条件下析出开始时间最短的“鼻子”温度为870℃左右。增加钢中的碳、氮含量以及形变量等对PTT曲线有较大影响,均使“C”曲线向短时间方向移动,特别是氮含量对V(C,N)析出的影响最显著。V的高温析出促进了铁素体形核,产生了明显的晶粒细化效果。
出处 《钢铁研究学报》 CAS CSCD 北大核心 2005年第B08期96-101,共6页 Journal of Iron and Steel Research
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参考文献6

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共引文献67

同被引文献18

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