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오스템퍼링 처리한 구상흑연주철의 피로특성에 미치는 열처리의 영향
박은서(Eun-Suh Park) 산업기술교육훈련학회 2009 산업기술연구논문지 (JITR) Vol.14 No.4
Austempered ductile cast iron (ADI) has attracted considerable interest in recent years because of its excellent properties, such as high strength with good ductility good wear resistance and fatigue strength. In this investigation, The effect of this variable austempering process temperature heat treatment on the microstructure and mechanical properties of the material was examined and compared with the samples processed by conventional isothermal austempering process. Test results show a significant improvement in elongation and fatigue limit of the material as a result of the variable austempering process.