FORMATION OF AUSTENITE SHELL AROUND SPHEROIDAL GRAPHITE AND ITS EFFECT ON DETERIORATION OF GRAPHITE

金属学报(英文版), 1989, 2(10): 261-265.

FORMATION OF AUSTENITE SHELL AROUND SPHEROIDAL GRAPHITE AND ITS EFFECT ON DETERIORATION OF GRAPHITE

ZHOU Jiyang Dalian University of Technology , Liaoning , ChinaW.SCHMITZ S.ENGLER Aachen Institute of Technology , FRG Associate Professor , Divisionof Foundry , Dalian Institute of Technology , Liaoning , China

Keywords： Spheroidal graphite , null , null , null

To study the growth of austenitic shells around the spheroidal graphite,color metallography has been employed.It is found that the shell is not a continuous layer of austenite,but a clus- ter of wedge-shaped crystals.Three types of shells have been observed.That may strongly af- fect the deterioration of the spheroidal graphite.The mechanism of the formation of the austenitic shells has also been discussed.

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FORMATION OF AUSTENITE SHELL AROUND SPHEROIDAL GRAPHITE AND ITS EFFECT ON DETERIORATION OF GRAPHITE

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