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本文对低合金结构钢15MnMoVNRE中的粒状贝氏体的精细结构进行了观察。观察指出:粒状贝氏体小岛的亚结构是复杂的,富碳小岛有发生其它类型相变的条件,粒贝铁素体转变具有扩散型台阶长大机制的特征。
In this paper, the fine structure of granular bainite in low alloy structural steel 15MnMoVNRE was observed. It is observed that the sub-structure of the granular bainite island is complex, and other types of phase transitions occur on the carbon-rich islets. The transformation of the grain-shell ferrite has the characteristics of a diffusion-type step-growth mechanism.