Development of crystallographic-orientation-dependent internal strains around a fatigue-crack tip during overloading and underloading
作者： S.Y. Lee , E.-W. Huang , W. Wu , P.K. Liaw , A.M. Paradowska
DOI: 10.1016/J.MATCHAR.2013.02.008
关键词:
摘要: Abstract In-situ neutron diffraction was employed to directly measure the crystallographic-orientation-dependent (i.e. hkl) internal strains as a function of distance from crack tip on pre-cracked Hastelloy C-2000 compact-tension specimen. Both in-plane (IP) and through-thickness (TT) strain evolutions for various grain orientations were examined during tensile overloading compressive underloading cycles. After overloading, their combination loadings applied unloaded, significantly different {hkl} residual profiles obtained in vicinity tip. The load responses {200} orientation both IP TT directions more significant than those any other orientations. It is suggested that orientation-dependent distributions around are caused by combined effects elastic plastic anisotropy each reflection upon loading subsequent development stresses generated near unloading result deformation.
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sci-hub.se 参考文章(34)
C SHIN, S HSU, On the mechanisms and behaviour of overload retardation in AISI 304 stainless steel International Journal of Fatigue. ,vol. 15, pp. 181- 192 ,(1993) , 10.1016/0142-1123(93)90175-P
T Lorentzen, MR Daymond, Bjorn Clausen, CN Tomé, None, Lattice strain evolution during cyclic loading of stainless steel Acta Materialia. ,vol. 50, pp. 1627- 1638 ,(2002) , 10.1016/S1359-6454(02)00029-0
A. Steuwer, L. Edwards, S. Pratihar, S. Ganguly, M. Peel, M.E. Fitzpatrick, T.J. Marrow, P.J. Withers, I. Sinclair, K.D. Singh, N. Gao, T. Buslaps, J.-Y. Buffière, In situ analysis of cracks in structural materials using synchrotron X-ray tomography and diffraction Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms. ,vol. 246, pp. 217- 225 ,(2006) , 10.1016/J.NIMB.2005.12.063
P.K. Liaw, H. Choo, R.A. Buchanan, C.R. Hubbard, X.L. Wang, Development of an in situ neutron-scattering facility for research and education in the mechanical behavior of materials Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 437, pp. 126- 133 ,(2006) , 10.1016/J.MSEA.2006.04.097
J. Smith, M.N. Bassim, C.D. Liu, T.M. Holden, Measurement of crack tip strains using neutron diffraction Engineering Fracture Mechanics. ,vol. 52, pp. 843- 851 ,(1995) , 10.1016/0013-7944(95)00047-Y
E-Wen Huang, Rozaliya I. Barabash, Bjørn Clausen, Peter K. Liaw, Cyclic-loading induced lattice-strain asymmetry in loading and transverse directions Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science. ,vol. 43, pp. 1454- 1461 ,(2012) , 10.1007/S11661-011-0972-9
J Kim, A statistical approach for predicting the crack retardation due to a single tensile overload International Journal of Fatigue. ,vol. 25, pp. 335- 342 ,(2003) , 10.1016/S0142-1123(02)00145-7
S.Y. Lee, H. Choo, P.K. Liaw, E.C. Oliver, A.M. Paradowska, In situ neutron diffraction study of internal strain evolution around a crack tip under variable-amplitude fatigue-loading conditions Scripta Materialia. ,vol. 60, pp. 866- 869 ,(2009) , 10.1016/J.SCRIPTAMAT.2009.01.036
P. K. Liaw, A. Saxena, V. P. Swaminathan, T. T. Shih, Effects of load ratio and temperature on the near-threshold fatigue crack propagation behavior in a CrMoV steel Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science. ,vol. 14, pp. 1631- 1640 ,(1983) , 10.1007/BF02654391
C HOU, J CHARNG, Estimation of plasticity-induced crack closure in a pre-existing plastic zone International Journal of Fatigue. ,vol. 18, pp. 463- 474 ,(1996) , 10.1016/0142-1123(96)00107-7