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자료유형
학술대회자료
저자정보
허하리 (국민대학교) 권혁우 (국민대학교) 구본우 (국민대학교) 김용석 (국민대학교)
저널정보
한국소성·가공학회 한국소성가공학회 학술대회 논문집 2015년도 한국소성가공학회 추계학술대회 논문집
발행연도
2015.10
수록면
254 - 257 (4page)

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This study was conducted to elucidate the effect of cementite morphology and matrix ferrite microstructure on sliding wear behavior of spheroidized high carbon (1 wt. %C) steel. The high carbon steel was primarily heat treated to obtain full pearlite and martensite microstructure before the spheroidization. Spheroidizing heat treatment was performed on the full pearlite steel for 100 hours at 700 ℃ and tempering was performed on the martensite steel for 3 hours at 650 ℃ to get spheroidized cementite in ferrite matrix in both full pearlite and martensite microstructure. Sliding wear tests were carried out using pin-on-disk wear tester with the steel as a disk specimen. An alumina(Al₂O₃) ball was used as a pin counterpart. The sliding wear tests were carried out at room temperature in the air with humidity of 402%. Adapted sliding distance and applied load was 300 m and 100 N, respectively. Sliding speed was 0.1m/s and the wear-track radius was 9mm. Worn surfaces and cross-sections of wear track were examined using an SEM. Micro Vickers hardness of the wear track subsurface was measure as a function of depth from the worn surface. After the spheroidizing heat treatment and the tempering, both pearlite and martensite exhibited similar microstructure of spheroidized cementite in ferrite matrix. Spheroidized pearlite specimens showed lower hardness than the tempered martensite, but wear resistance of the spheroidized pearlite was superior to that of the tempered martensite.

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Abstract
1. 서론
2. 실험방법
3. 결과 및 고찰
4. 결론
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UCI(KEPA) : I410-ECN-0101-2017-551-000826056