Fatigue crack tip strain evolution and crack growth prediction under single overload in laser melting deposited Ti-6.5Al-3.5Mo-1.5Zr-0.3Si titanium alloy
作者： Yanzeng Wu , Rui Bao
DOI: 10.1016/J.IJFATIGUE.2018.07.011
关键词:
摘要: Abstract This paper focuses on the fatigue crack tip strain evolution in laser melting deposited Ti-6.5Al-3.5Mo-1.5Zr-0.3Si titanium alloy under constant amplitude loading plus single overload (OL). The digital image correlation (DIC) technique was used to capture and evaluate fields closure variation; results showed that strains near become larger opening load increases after application of OL. size retardation distance is consistent with analysis fields. model based DIC can provide good predictions growth life for both low high ratios.
sci-hub.se 参考文章(44)
Jaap Schijve, Fatigue of structures and materials ,(2001)
Titanium and titanium alloys : fundamentals and applications Titanium and Titanium Alloys: Fundamentals and Applications. pp. 532- ,(2005) , 10.1002/3527602119
D. NOWELL, M. E. KARTAL, P. F. P. DE MATOS, Digital image correlation measurement of near-tip fatigue crack displacement fields: constant amplitude loading and load history effects Fatigue & Fracture of Engineering Materials & Structures. ,vol. 36, pp. 3- 13 ,(2013) , 10.1111/J.1460-2695.2012.01707.X
W. ZHANG, Y. LIU, Plastic zone size estimation under cyclic loadings using in situ optical microscopy fatigue testing Fatigue & Fracture of Engineering Materials & Structures. ,vol. 34, pp. 717- 727 ,(2011) , 10.1111/J.1460-2695.2011.01567.X
D.G Pavlou, Prediction of fatigue crack growth under real stress histories Engineering Structures. ,vol. 22, pp. 1707- 1713 ,(2000) , 10.1016/S0141-0296(99)00069-3
Zheng Liu, Zuo-Xiang Qin, Fang Liu, Xing Lu, Hua-Ming Wang, The microstructure and mechanical behaviors of the Ti–6.5Al–3.5Mo–1.5Zr–0.3Si alloy produced by laser melting deposition Materials Characterization. ,vol. 97, pp. 132- 139 ,(2014) , 10.1016/J.MATCHAR.2014.09.002
O. E. Wheeler, Spectrum Loading and Crack Growth Journal of Basic Engineering. ,vol. 94, pp. 181- 186 ,(1972) , 10.1115/1.3425362
Viggo Tvergaard, Effect of underloads or overloads in fatigue crack growth by crack-tip blunting Engineering Fracture Mechanics. ,vol. 73, pp. 869- 879 ,(2006) , 10.1016/J.ENGFRACMECH.2005.10.009
D.G. Pavlou, N.V. Vlachakis, M.G. Pavlou, V.N. Vlachakis, Estimation of fatigue crack growth retardation due to crack branching Computational Materials Science. ,vol. 29, pp. 446- 452 ,(2004) , 10.1016/J.COMMATSCI.2003.12.003
A.B. Li, L.J. Huang, Q.Y. Meng, L. Geng, X.P. Cui, Hot working of Ti–6Al–3Mo–2Zr–0.3Si alloy with lamellar α + β starting structure using processing map Materials & Design. ,vol. 30, pp. 1625- 1631 ,(2009) , 10.1016/J.MATDES.2008.07.031