摘要
The morphology and structure of δ-eutectoid and the transformation of δ-eutectoidic austenite in high speed steel have been studied under SEM and TEM.The δ-eutectoid in as-cast high speed steel is rod-shaped eutectoidic units with different orientations and is markedly surrounded by carbide shell.The eutectoidic carbide is rod-shaped M_6C of square eross section.The eutectoidic austenite may transform into pearlite structure during cooling.
The morphology and structure of δ-eutectoid and the transformation of δ-eutectoidic austenite in high speed steel have been studied under SEM and TEM.The δ-eutectoid in as-cast high speed steel is rod-shaped eutectoidic units with different orientations and is markedly surrounded by carbide shell.The eutectoidic carbide is rod-shaped M_6C of square eross section.The eutectoidic austenite may transform into pearlite structure during cooling.
