Macroscopic variables governing the microscopic fracture of pearlitic steels
作者： J. Toribio , A.M. Lancha , M. Elices
DOI: 10.1016/0921-5093(91)90246-J
关键词: Scanning electron microscope 、 Fracture (geology) 、 Microvoid coalescence 、 Structural engineering 、 Continuum mechanics 、 Materials science 、 Hydrostatic equilibrium 、 Tearing 、 Hydrostatic stress 、 Stress (mechanics) 、 Mechanics
摘要: Abstract The main macroscopic variables (in the continuum mechanics sense) which govern microscopic fracture of notched samples high strength steel are studied. investigation, performed in inert and aggressive environments, offers therefore a quantitative relationship between approaches to fracture, allows prediction size critical microstructural zone by numerical computation. experimental programme included tests on covering broad range geometries, air hydrogen environments. Fractographic analysis means scanning electron microscopy showed topographies after failure. study consisted elastic-plastic finite-element method computations determine distribution at instant fracture. region for develops microvoid coalescence its extension is governed stress triaxiality (the ratio hydrostatic equivalent stress). show specific mode, called tearing topography surface whose asymptotic depth extends up location maximum stress.
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sci-hub.se 参考文章(31)
John J. Lewandowski, Anthony W. Thompson, Effects of the prior austenite grain size on the ductility of fully pearlitic eutectoid steel Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science. ,vol. 17, pp. 461- 472 ,(1986) , 10.1007/BF02643953
Jean Lemaitre, A CONTINUOUS DAMAGE MECHANICS MODEL FOR DUCTILE FRACTURE Journal of Engineering Materials and Technology-transactions of The Asme. ,vol. 107, pp. 83- 89 ,(1985) , 10.1115/1.3225775
D.S. Liu, M. Manoharan, J.J. Lewandowski, Effects of superimposed hydrostatic pressure on the fracture properties of particulate reinforced metal matrix composites Scripta Metallurgica. ,vol. 23, pp. 253- 256 ,(1989) , 10.1016/0036-9748(89)90421-3
A. Neimitz, Elias C. Aifantis, On the role of the process zone in hydrogen assisted cracking—II. Kinetic conditions Engineering Fracture Mechanics. ,vol. 31, pp. 19- 25 ,(1988) , 10.1016/0013-7944(88)90118-X
D. S. Liu, M. Manoharan, J. J. Lewandowski, Matrix effects on the ductility of aluminium-based composites deformed under hydrostatic pressure Journal of Materials Science Letters. ,vol. 8, pp. 1447- 1448 ,(1989) , 10.1007/BF00720219
W. W. Gerberich, S. -H. Chen, C. -S. Lee, T. Livne, Brittle fracture: Weakest link or process zone control? Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science. ,vol. 18, pp. 1861- 1875 ,(1987) , 10.1007/BF02647016
Anthony W. Thompson, James C. Chesnutt, Identification of a fracture mode: the tearing topography surface Metallurgical Transactions A. ,vol. 10, pp. 1193- 1196 ,(1979) , 10.1007/BF02811666
D.J. Neville, On the distance criterion for failure at the tips of cracks, minimum fracture toughness, and non-dimensional toughness parameters Journal of the Mechanics and Physics of Solids. ,vol. 36, pp. 443- 457 ,(1988) , 10.1016/0022-5096(88)90027-0
G. Rousselier, Ductile fracture models and their potential in local approach of fracture Nuclear Engineering and Design. ,vol. 105, pp. 97- 111 ,(1987) , 10.1016/0029-5493(87)90234-2
D. M. Norris, J. E. Reaugh, B. Moran, D. F. Quin˜ones, A Plastic-Strain, Mean-Stress Criterion for Ductile Fracture Journal of Engineering Materials and Technology. ,vol. 100, pp. 279- 286 ,(1978) , 10.1115/1.3443491