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Acta Metall Sin  1991, Vol. 27 Issue (5): 66-69    DOI:
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ELECTRON MICROSCOPE STUDY ON δ EUTECTOID IN HIGH SPEED STEEL
SHI Gongqi;DING Peidao;ZHOU Shouze Chongqing University
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SHI Gongqi;DING Peidao;ZHOU Shouze Chongqing University. ELECTRON MICROSCOPE STUDY ON δ EUTECTOID IN HIGH SPEED STEEL. Acta Metall Sin, 1991, 27(5): 66-69.

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Abstract  The morphology and structure of δ eutectoid and the transformation of δ 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 cross section. The eutectoid austenite may transform into pearlite structure during cooling.
Key words:  high speed steel      eutectoidic carbide      eutectoidic austenite     
Received:  18 May 1991     
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Kuo K. J Iron Steel Inst, 1955; 10: 128--134
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