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자료유형
학술저널
저자정보
허하리 (국민대학교) 권혁우 (국민대학교) 김명곤 (국민대학교) 김용석 (국민대학교)
저널정보
한국소성·가공학회 소성·가공 소성가공 제23권 제6호
발행연도
2014.10
수록면
345 - 350 (6page)

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The current study elucidates the effects of cementite spheroidization and pro-eutectoid ferrite on the sliding wear resistance in medium carbon (0.45wt%C) and high carbon (1wt%C) steels. Both steels were initially heat treated to obtain a fully pearlite or ferrite + pearlite microstructure. Spheroidizing heat treatments were performed on both steels to spheroidize the pearlitic cementite. Sliding wear tests were conducted using a pin-on-disk wear tester with the steel specimens as the disk and an alumina (Al₂O₃) ball as the pin. The sliding wear tests were carried out at room temperature in air with humidity of 40±2 %. Adapted sliding distance and applied load was 300m and 100N, respectively. Sliding speed was 0.1m/s and the wear-track radius was 9 mm. Worn surfaces and cross-sections of the wear track were examined using an SEM. Micro Vickers hardness of the wear-track subsurface was measured as a function of depth from the worn surface. Hardness and sliding-wear resistance of both steel decreased with increased spheroidization of the cementite. The decrease was more significant in the fully pearlitic steel (1wt%C steel). The steel with the pro-eutectoid ferrite showed relatively higher wear resistance compared to the spheroidized pearlitic steel.

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Abstract
1. 서론
2. 실험 방법
3. 결과 및 고찰
4. 결론
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UCI(KEPA) : I410-ECN-0101-2015-550-002728856