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铸态高速钢深腐蚀试样及电解萃取粉末试样的电镜观察表明:随着高速钢成份的改变共晶碳化物的形态还有许多种;骨骼状共晶周围有一层碳化物“墙”,羽毛状共晶碳化物的片块上有明显的生长台阶;δ—共析体中的碳化物呈丝束状。
Electron microscopy observation of as-cast samples of high-speed as-cast steels and samples of electrolytic-extraction powders showed that there were many kinds of eutectic carbides along with the change of high-speed steels. There was a layer of carbide “wall” The feathered eutectic carbide has obvious growth steps on the patches; the carbides in δ-eutectoid are in the shape of tow.