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Initiation and Growth Behavior of Small Surface Fatigue Cracks on SiC Whisker Reinforced Aluminum Composite
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 Title & Authors
Initiation and Growth Behavior of Small Surface Fatigue Cracks on SiC Whisker Reinforced Aluminum Composite
Choe, Yeong-Geun; Lee, Taek-Sun; Kim, Sang-Tae; Seo, Chang-Min; Lee, Mun-Hwan;
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 Abstract
Reversed plane bending fatigue tests were conducted on SiC whisker reinforced aluminum composite which were consolidated by squeeze casting process. Initiation and growth of small surface fatigue c racks were investigated by means of a plastic replica technique. The fatigue crack initiated in the vicinity of SiC whisker/matrix interface. It was found that a fatigue crack deflected along SiC whisker and grew in a zig-zag manner microscopically, although the crack propagated along the direction normal to the loading axis macroscopically. The coalescence of micro-cracks was observed in the tests conducted at high stress levels, but were not evident in tests in which lower levels of stress were applied. Due to the coalescence, a higher crack growth rate of small cracks rather than those of long cracks was recognized in da/dn -ΔK realtionship.
 Keywords
Crack Initiation;Small Surface Crack;SiC Whisker Reinforced Aluminum Matrix Composite;Bending Fatigue Test;Stress Intensity Factor Range;
 Language
Korean
 Cited by
 References
1.
福永秀春, 1991, '金屬基複合材料の現狀と將來(1),' 日本金屬學會會報, 第30卷 第4號, pp. 276-288

2.
Paris, P. and Erdogan, F., 1963,' A Critical Analysis of Crack Propagation Laws,' Trans. ASME, Ser. D, 85, pp. 528-533

3.
Elber, W., 1971, 'The Significance of Fati-gue Crack Closure,' ASTM, STP486, pp. 230-242

4.
Shang, J. K. and Ritchie, R. O., 1989, 'On the Particle-Size Dependence of Fatigue Crack Propagation Thresholds in SiC Particulate Reinforced Aluminum-Alloy Composites:Role of Crack Closure and Crack Trapping,' Acta Metall., Vol. 37, No. 8, pp. 2267-2278

5.
Choi, Y. G., Lee, T. S., and Lee, M. H., 1995, 'Initiation and Growth Behavior of Small Surface Fatigue Cracks on SiC Particulate Reinforced Aluminum Matrix Composites,' Transations of the KSME, Vol. 19, No. 11, pp. 2787-2796

6.
小林俊郞, 1991, SiC 粒子强化 6061 アルミニウムの疲勞龜裂傳播特性, 日本金屬學會誌 第 55卷, 第l號, pp. 72-78

7.
Whitehouse, A. F. and Clyne, T. W., 1993, 'Cavity Formation During Tensile Stringing of Particulate and short Fiber Metal Matrix Composites,' Acta. Metall. Mater., Vol. 41, No. 6, pp. 1701-1711 crossref(new window)

8.
小磯信重, 1989, 'SiC 粒子强化 Al 合金의 據勞特性', 材料, Vol. 38, No. 433, pp. 1206-1211

9.
Kumai, S., King, J. E., and Knoot, J. F., 1990, 'Fatigue Crack Growth in SiC Particulate Reinforced Aluminium Alloys,' Fatigue 90, Vol. II, pp. 869-874

10.
Shang, J. K. and .Ritchie, R. O., 1989, 'Crack Bridging by uncracked Ligaments during Fatigue-Crack Growth in SiC-Reinforced Aluminum-Alloy Composites,' Metall. Trans. A, Vol. 20A, pp. 897-908 crossref(new window)

11.
Kumai, S.,.King, J. E., and Knott, J. F., 1990, 'Short and Long Fatigue Crack Growth in a SiC Reinforced Aluminium Alloy,' Fatigue Fract. Engng. Mater. Struct., Vol.13, No.5, pp.511-524 crossref(new window)

12.
增田千利, 1989, 'SiC ウイスカ-强化及び SiC 粒子分散 複合材料の疲勞破壞 機構,' 鐵と鋼, Vol. 75, No.9, pp.1753-1760

13.
Newman, J. C. and Raju, I. S., 1983, 'Stress Intensity Factor Equations for Cracks in Three-Dimensional Finite Bodies,' ASTM STP 791, pp. 238-265

14.
Kitagawa. H., Suh. C. M., 1979, 'Quantitative Analysis of Fatigue Process Micro-Cracks and Slip Lines under Cyclic Strains,' ASTM STP 678, pp. 420-449

15.
Suh,C.M., and Kitagawa, H., 1987, 'Crack Growth Behavior of Fatigue Microcracks in Low Carbon Steels,' Fatigue Fract. Engng. Mater. struct., Vol. 9-6, pp. 409-424 crossref(new window)

16.
Suh,C.M., Ritchie, R.O. and Kang,Y.G., 1989, 'Growth Behavior of Short Surface Fatigue Cracks in 2.25Cr-lMo Steel,' KSME Journal, Vol. 3-2, pp. 78-85

17.
서창민, 1985, '인장 축하중 피로에 의한 미소 표면 균열의 발생·성장 거동,' 대한기계학회논문칩 제 9권, 제l호, pp.1-9