This study aims at the exploration of the observation of the morphological changes of bainite with M/A constituents and precipitation of carbides during the tempering treatment.

• 本研究从变韧肥粒铁、微量富含碳之M/A相形态改变之观察以及碳化物析出变化等三方面探讨随回火时间增长时其对应之变化。