Advanced SearchSearch Tips
Variation of Rotating Bending Fatigue Characteristics by UNSM on Ti-6Al-4V
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Variation of Rotating Bending Fatigue Characteristics by UNSM on Ti-6Al-4V
Suh, Chang-Min; Pyoun, Young-Sik; Suh, Min-Soo;
  PDF(new window)
In order to analyze feasibility of replacing a conventional 6-mm Ti bar with a 5-mm bar, a series of rotating bending fatigue tests were carried out on Ti-6Al-4V bars by strengthening the fatigue performance using a special technique called UNSM (Ultrasonic Nanocrystal Surface Modification). The results of S-N curves clearly showed that the performance of the 5-mm titanium specimen was similar to that of the 6-mm specimen when the UNSM treatment was applied. The 5-mm treated specimen converged with small scattering band into the linear line of the non-treated 6-mm one. Below the fatigue life of cycles, the UNSM treatment did not show any significant superiority in the bending stress and fatigue life. However, over the fatigue life of cycles, the effect of UNSM was superior for each fatigue life, and the bending stress became longer and higher than that of the untreated one. In the case of 6-mm Ti-bar with UNSM, the fatigue limit was about 592 MPa, and there was fatigue strength increase of about 30.7% at the fatigue life of cycles compared to the untreated 6-mm bar. Therefore, the compressive residual stress made by the UNSM in Ti-6Al-4V increased the fatigue strength by more than 30%.
Rotating bending fatigue test;S-N curve;Ultrasonic nanocrystal surface modification technology;Compressive residual stress;
 Cited by
Altenberger, I. (2005). "Deep Rolling - The Past, The Present and The Future", Proc. 9th Int. Conf. on Shot Peening, pp 144-155.

Chai, G. (2006). "The Formation of Subsurface Non-Defect Fatigue Crack Origins", International Journal of Fatigue. Vol 28-11, pp 1533-1539. crossref(new window)

Ochi, Y., Matsumura, T., Sasaki, R., Masaki,. K., Sakai, T. and Sano, Y. (2011). "Effects of Laser Peening Treatment Without Protective Coation on High Cycle Fatigue Property of Ti-6Al-4V alloy", 5th International conference on Very High Cycle Fatigue, pp 369-374.

Petit, J., Christine Sarrazin-Baudoux and Martinez, J. (2007). "Very High Cycle Fatigue Behavior of Ti6246 Alloy in Air and in High Vacuum", 4th International Conference on Very High Cycle Fatigue, pp 399-408.

Prevey, P. and Jayaraman, N. (2005). "Overview of Low Plasticity Burnishing for Mitigation of Fatigue Damage Mechanisms", Proc. 9th Int. Conf. on Shot Peening, pp 267-272.

Suh, C.M., An, Y.D., Pyun, Y.S., Cho, L.H. and Suh, M.S. (2011). "Improvement of VHCF Properties of AISI 1045, 4137, 52100 & H13 steel by UNSM treatment", 2011년도 한국해양과학기술협의회 공동학술대회, pp 1574-1579.

Suh, C.M., Kim, M.H., Baek, U.B., Pyun, Y.S., Kim, C.S. and Chi, C.H. (2010a). "A Stduy on The Alternative Technonogy Using UNSM Instead of The Persetting Method for Torsion Bar", International journal of modern physics B, Vol 24, Nos 15-16, pp 2435-2440. crossref(new window)

Suh, C.M. and Kitagawa, H. (1985), "Fatigue Microcracks in a Low Carbon Steel", Fatigue Fract. Engng. Mater. Struct., Vol 8-2, pp 193-203. crossref(new window)

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

Suh, C.M., Lee, M.H. and Pyoun, Y.S. (2010b). " Fatigue Characteristics of SKD-61 by Ultrasonic Nanocrystal Surface Modification Technology Under Static Load Variation", International journal of modern physics B, Vol 24, Nos 15-16, pp 2645-2650. crossref(new window)

Suh, C.M., Song, G.H. Suh, M.S. and Pyoun, Y.S. (2007). "Fatigue and Mechanical Characteristic of Nano-Structured Tool Steel by Ultrasonic Cold Forging Technology", Materials Science and Engineering A 443, pp 101-106. crossref(new window)

Thomas, M.B. (2002). "High Cycles Fatigue (HCF) Science and Technology Program 2001 Annual Report", AFRL-PR-WPTR-2002-2060.

Watanabe, Y., Hasegawa, N. and Duchazeaubeneix J.M. (2003). "Effect of Ultrasonic Shot Peening on Fatigue Strength of High Strength Steel", Proc. 8th Int. Conf. on Shot Peening, pp 306-310.

편영식, 박정현, 조인호, 김창식, 서창민 (2009). "초음파 나노표면개질기술의 특성과 활용방안 연구", 대한기계학회논문집 (A), 33-3, pp 190-195. crossref(new window)