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micromechanics was used to predict the high cycle fatigue of microstructurally small crack formation and growth in notched polycrystalline nickel-base superalloys and to quantify the variability...-dimensional perspectives of microstructural features influencing fatigue crack growth in notched nickel-base superalloys,which accounts for the effects of nonlocal notch root plasticity, loading......
Trans. Nonferrous Met. Soc. China 30(2020) 2459-2471 Effect of α phase morphology on fatigue crack growth behavior of Ti-5Al-5Mo-5V-1Cr-1Fe alloy Kui-wai CHEN1, Su-ping PAN1,2, Hui-qun LIU1,3, Yong..., the fatigue crack growth sensitivity and fracture features with various tailored α phase morphologies were thoroughly investigated using fatigue crack growth rate (FCGR) test, optical microscopy (OM......
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CREEP CRACK GROWTH BEHAVIOR OF ALLOY 718 DURING HIGH TEMPERATURE EXPOSURE Y.P.Zeng1,X.S.Xie1,J.X.Dong1,M.C.Zhang1 (1.Department of Material Science, University of Science and Technology Beijing... crack growth rate(CCGR) was investigated after high temperature exposure at 593, 650 and 677℃ for 2000h inAlloy 718. In addition to the coalescence of γ''/ γ" and the amount increasing of δ phase......
J. Cent. South Univ. (2017) 24: 866-874 DOI: 10.1007/s11771-017-3489-6 Crack growth analysis for rock-like materials with ordered multiple pre-cracks under biaxial compression WANG Min(王敏)1, 2, CAO... in these experiments. Through biaxial compression experiments, the influence of both the number of pre-cracks and pre-cracks angles to crack growth was analyzed. Meanwhile, species of rock bridge failure were summarized......
caused a dramatical decrease in fatigue lives of FS welds, the corrosion fatigue lives of FS welds were almost a half of those of the as-welded specimens. The crack growth rates in FS welds were higher... stir welding; aluminium alloy; fatigue; crack growth rate; corrosion 1 Introduction High strength aluminium alloys are known to be attractive materials for aerospace industry because of their high......
not be debonded [6]. It is well known that grain boundary characteristic is one of the main barriers to the fatigue crack growth behaviour in most metallic structures, which especially often accounts for the short fatigue crack growth rate [7]. The short crack propagation behavior of Al-Li 8090 alloys [8,9] was dominated by the twist and tilt components of crack plane deflection at grain boundaries......
. Probabilistic crack growth analyses using a boundary element model: Applications in linear elastic fracture and fatigue problems [J]. Engineering Analysis with Boundary Elements, 2012, 36: 944-959. [18...] OLIVEIRA H L, LEONEL E D. An alternative BEM formulation, based on dipoles of stresses and tangent operator technique, applied to cohesive crack growth modeling [J]. Engineering Analysis with Boundary......
Molecular dynamics simulation of bending crack initiation and growth of single crystal aluminiumSHAN De-bin(单德彬), YUAN Lin(袁 , 林), GUO Bin(郭 斌)(School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)Abstract:Molecular dynamics (MD) simulation was employed to research the mechanism of bending crack initiation and growth of single crystal aluminium......
; 文献标志码:A Effect of microstructure heterogeneity on fatigue crack growth of TA15 electron beam welded joint LI Xing-zhi, HU Shu-bing, XIAO Jiang-zhong, JI Long-bo (State Key Laboratory of Material..., hardness, fatigue crack growth rate and fatigue fractograph in the welding seam (WS) and heat-affected zone (HAZ) of thick TA15 alloy electron beam (EB) welded joint were studied. The results indicate......