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오스템퍼링처리한 C/V 흑연주철의 마멸특성에 미치는 오스템퍼링 온도의 영향에 관한 연구
김창규,김중배,장영석 ( Chang Gyu Kim,Jung Bae Kim,Young Suk Jang ) 한국주조공학회 1996 한국주조공학회지 Vol.16 No.3
N/A C/V graphite cast iron containing a small amount of Cu and Mo for better hardenability and microstructure, was poured into the CO₂mold and then austenitized at 900℃ for 2hours. After austenitizing, the specimens of castings were austempered at 250℃, 300℃ and 350℃, respectively. The interrelationship among matrix structures, mechanical properties, wear characteristics, and austempering temperatures were investigated in this study. Wear amount increased with the increase of ferrite and retained austenite. The amount of sliding wear loss increased as sliding speed and final load increased, and wear loss of austempered C/V graphite cast iron under dry sliding condition was characterized by three models; initial wear, stationary wear and abnormal wear. The wear amount decreased with the decrease of austempering temperature, with the increase of tensile strength and hardness.