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Bhadeshia和Edmonds曾发现Fe-C-Si-Mn钢贝氏体铁素体中分布有多重变态碳化物,认为这是贝氏体相变以切变机制完成的有力证据之一,但因其贝氏体组织特征不明显,有人认为这种碳化物实际上是一种由贝氏体相变导致奥氏体应变诱发形成的马氏体自回火产物,从而否定了文献[1]中结论.以往的研究表明,由于硅阻滞碳化
Bhadeshia and Edmonds have found that the distribution of multiple metamorphic carbides in Fe-C-Si-Mn bainitic ferrite is considered as one of the most powerful evidences for the bainite transformation to be achieved by the shear mechanism. However, The characteristics of the microstructure are not obvious. Some people think that this kind of carbide is actually a martensite self-tempering product induced by the austenite strain induced by the bainite transformation, thus denying the conclusion in the literature [1]. Previous studies have shown that silicon blocks carbonization