Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지
DOI QR코드

DOI QR Code

Fretting Fatigue Behavior of High Strength Aluminum Alloys

고강도 알루미늄 합금의 프레팅 피로거동

  • 최성종 (경일대학교 기계자동차학과) ;
  • 이학선 (영남대학교 대학원) ;
  • 이철재 (한국항공우주산업주식회사) ;
  • 김상태 (영남대학교 기계공학부)
  • Published : 2007.02.01
Download PDF
⟨ Previous Next ⟩

Abstract

Fretting is a contact damage process that occurs between two contact surfaces. Fretting fatigue reduces fatigue strength of the material due to low amplitude oscillatory sliding and changes in the contact surfaces of strongly connected machine and structure such as bolt, key, pin, fixed rivet and connected shaft, which have relative slip of repeatedly extreme low frequency amplitude. In this research, the fretting fatigue behavior of 2024-T3511 and 7050-T7451 aluminum alloys used mainly in aircraft and automobile industry were experimentally estimated. Based on this experimental wort the following results were obtained: (1) A significant decrease of fatigue lift was observed in the fretting fatigue compared to the plain fatigue. The fatigue limit of 2024-T3511 aluminum alloy decreased about 59% while 7050-T7451 aluminum alloy decreased about 75%. (2) In 7050-T7451 specimen using ATSI4030 contact pad, crack was initiated more early stage than using 2024-T3511 contact pad. (3) In all specimens, oblique cracks were initiated at contact edge. (4) Tire tracks and rubbed scars were observed in the oblique crack region of fracture surface.

Keywords

References

  1. Waterhouse, R. B., 1972, FRETTING CORROSION, Pergamon Press, pp. 106-159
  2. Endo, K., 1981, 'Practical Observations of Initiation and Propagation of Fretting Fatigue Cracks,' in FRETTING FATIGUE, edited by Waterhouse, R. B., Applied Science Publishers LTD., pp. 127-141
  3. Waterhouse, R. B., 1972, FRETTING CORROSION, Pergamon Press, pp. 197-231
  4. Totten, George E. and MacKenzie, D. Scott, 2003, Handbook of Aluminum-Vol.1, Marcel Dekker Inc., pp. 1-32
  5. Sato, K., Fujii, H. and Kodama, S., 1985, 'Fretting-Fatigue Crack Propagation Behavior of A2024-T3 Aluminum Alloy,' Trans. of the JSMS(Zairyo), Vol. 34, No. 384, pp. 74-79
  6. Saeed, A., 1991, Investigation of Fretting Fatigue Mechanisms on 7075-T6 Aluminum and Ti-6Al-4V Titanium Alloy, Thesis, The University of Utah
  7. ASTM, 'Conducting Constant Amplitude Axial Fatigue Tests of Metallic Materials,' ASTM E 466 82, pp. 470-474
  8. JSME, 2002, Standard Method of Fretting Fatigue Testing, JSME S 015, pp. 1-6
  9. Mutoh, Y., 1995, 'Mechanisms of Fretting Fatigue,' JSME International Journal(A), Vol. 38, No. 4, pp. 405-415
  10. Kwon, J. D., Sung, S. S. and Choi, S. J., 2001. 'A Study on Material Degradation and Fretting Fatigue Behavior,' Trans. of the KSME(A), Vol. 25, No. 8, pp. 1287-1293
  11. Nagata, K. and Fukuhara J., 1992. 'Effect of Contact Materials on Fretting Fatigue Strength of 3.5Ni-Cr-Mo-V Rotor Steel and Life-Prediction Method,' Trans. of the JSME(A), Vol. 58, No. 553, pp. 1561-1568 https://doi.org/10.1299/kikaia.58.1561
  12. K. Tanaka, Y. Mutoh and S. Sakoda, 'Effect of Contact Materials on Fretting Fatigue in a Spring Steel,' Trans. of the JSME(A), Vol. 51, No. 464, pp. 1200-1207
  13. Waterhouse, R. B., 1972, FRETTING CORROSION, Pergamon Press, pp. 155-161
  14. Waterhouse, R. B., 1981, 'Theories of Fretting Process,' in FRETTING FATIGUE, edited by Waterhouse, R. B., Applied Science Publishers LTD., pp. 203-219
  15. Koterazawa, R., 1981, Application of Fractography, Nikankougyosinbunsya, p. 52
  16. JSMS, 2000, Fractography: Analysis of Fracture Surface and Failure Information, Maruzen, pp. 167-169
  17. Koterazawa, R., 1981, Application of Fractography, Nikankougyosinbunsya, p. 31