含镁夹杂物对一种管线钢固体相变的影响

来源期刊：钢铁2010年第7期

论文作者：李贵阳 李太全

文章页码：76 - 80

关键词：夹杂物； 固体相变； 诱导

Key words：inclusion； solid transformation； stimulation

摘    要：为了研究含镁夹杂物在管线钢中的物理冶金作用,应用Gleeble-3800模拟了微镁处理X120管线钢轧制工艺,发现含镁夹杂物可以在轧制中作为形变奥氏体的形核核心,也可以在γ-α相变中作为铁素体的形核核心,能够在小于50μm甚至10μm的形变奥氏体内诱导晶内铁素体,得出了夹杂物诱导能力指数随温度变化的规律,管线钢微镁处理还可以形成大量小于300 nm的细小含镁复合夹杂物。

Abstract: In order to study the function of the inclusions containing Mg during TMCP mill rolling,the hot rolling simulation was carried out on Gleeble-3800 in X120 pipeline steel with Mg treatment.It was found that the inclusions containing Mg could act as the nucleuses of fine deformed austenite during rolling process,and also as the nucleuses of intra-granular ferrite during transformation process from austenite to ferrite where the size of austenite was within 50 μm and even 10 μm.The relationship between the inductive capability and treating temperature was obtained,and it could be also found many fine inclusions containing Mg whose sizes were less than 300 nm.