Effects of Fiber Orientations and Hybrid Ratios on Lubricant Tribological Characteristics of Al2O3f/SiCp Reinforced MMCs
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
The lubricant tribological characteristics of Al2O3 fiber and SiC particle hybrid metal matrix composites (MMCs) fabricated by squeeze casting method was investigated using a pin-on-disk wear tester. The wear tests of the MMCs were performed according to fiber/particle hybrid ratio in the planar-random (PR) and normal (N) orientations sliding against a counter steel disk at a fixed speed and 25 kgf loading under different sliding distances and temperatures. The test results showed that the wear behavior of MMCs varied with fiber orientation and hybrid ratio. At room temperature, the lubricant wear behavior of F20P0 unhybrid PR-MMCs was superior to that of N-MMCs while the hybrid composites exhibited the reverse lubricant wear behavior. It was also revealed that the wear resistance of PR-MMCs was superior to that of the N-MMCs due to the joint action of reinforcements and lubricant film between the friction surfaces at an elevated temperature of 100 °C for both fiber only and hybrid cases. In case of 150 °C, although the trend of weight loss was similar to that of others, the wear resistance of PR-MMCs was better than that of N-MMCs for hybrid MMCs.
Abstract
The lubricant tribological characteristics of Al2O3 fiber and SiC particle hybrid metal matrix composites (MMCs) fabricated by squeeze casting method was investigated using a pin-on-disk wear tester. The wear tests of the MMCs were performed according to fiber/particle hybrid ratio in the planar-random (PR) and normal (N) orientations sliding against a counter steel disk at a fixed speed and 25 kgf loading under different sliding distances and temperatures. The test results showed that the wear behavior of MMCs varied with fiber orientation and hybrid ratio. At room temperature, the lubricant wear behavior of F20P0 unhybrid PR-MMCs was superior to that of N-MMCs while the hybrid composites exhibited the reverse lubricant wear behavior. It was also revealed that the wear resistance of PR-MMCs was superior to that of the N-MMCs due to the joint action of reinforcements and lubricant film between the friction surfaces at an elevated temperature of 100 °C for both fiber only and hybrid cases. In case of 150 °C, although the trend of weight loss was similar to that of others, the wear resistance of PR-MMCs was better than that of N-MMCs for hybrid MMCs.
참고문헌 (13)
- Nom, H. W, "The dynamic behavior of metal-matrix composites under low-velocity impact", Compos. Sci. Technol., 60, pp.817~823 (2000)
- Fu, H. H., "Wear properties of Saffil", Al, Saffil, Al and Saffil, pp.SiC, Al hybrid metal matrix composites[DOI]
- Du, Z. M, "Study of Al2O3sfSiCp", Al composites and their wear-resisting properties, 2004, pp.151, 298~301
- Walker, J. C., "Lubricated sliding wear behaviour of aluminium alloy composites", Wear, 259(1), pp.577~589 (2005)
- Song, J. I., "Effect of volume fraction of carbon fibers on wear behavior of Al", Al2O3, J. Mater. Process. Technol., pp.1997, 39(3)[DOI]
- Shipway, H. P., "Sliding wear behavior of aluminium-based metal matrix composites produced by a novel liquid route", Wear, 216, pp.160~171 (1998)
- Kato, K., "Wear in relation to friction-a review", Wear, 241, pp.151~157 (2000)
- Singh, J., "Elevated temperature wear of Al6061 and Al6060-20%Al2O3", Metall. Mater. Trans. A, 32(7), pp.1099~1105 (1995)
- Deuis, R. L., "Abrasive wear of aluminium composites-a review", Wear, 201, pp.132~144 (1996)
- Wilson, S., "Effect of temperature on the sliding wear performance of Al alloys and Al matrix composites", Wear, 196, pp.270~278 (1996)
- Benal, M. M., "Effects of reinforcements content and ageing durations on wear characteristics of Al (6061) based hybrid composites", Wear, 262(5), pp.759~763 (2007)
- Tang, F., "Dry sliding friction and wear properties of B4C particulate-reinforced Al-5083 matrix composites", Wear, 264(7), pp.555~561 (2008)
- Rosenberger, M. R., "Wear behavior of AA1060 reinforced with alumina under different loads", Wear, 266(1), pp.356~359 (2009)