Influence of crack orientation on the ductile-brittle behavior in Fe-3 wt.% Si single crystals

Materials Characterization

Volumn 58, Issue 10, 2007, Pages 892-900

  Spielmannová, Alena ^a,b   Landa, Michal ^a   Machová, Anna ^a   Haušild, Petr ^b   Lejček, Pavel ^c  

^a INSTITUTE OF THERMOMECHANICS   (Czech Republic)

^b CZECH TECHNICAL UNIVERSITY IN PRAGUE   (Czech Republic)

^c INSTITUTE OF PHYSICS   (Czech Republic)

Author keywords

bcc iron; Experiments; Fracture

Indexed keywords

ACOUSTIC EMISSIONS; COMPUTER SIMULATION; CRACK INITIATION; IRON ALLOYS; MOLECULAR DYNAMICS; SCANNING ELECTRON MICROSCOPY;

CRACK STABILITY; FRACTOGRAPHIC ANALYSIS; IRON-SILICON SINGLE CRYSTALS; ROOM TEMPERATURE;

SINGLE CRYSTALS;

EID: 34548170063     PISSN: 10445803     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.matchar.2006.09.001     Document Type: Article

References (27)

1. Biggs W.D., and Pratt P.L. The deformation and fracture of alpha-iron at low temperatures. Acta Metall 6 (1958) 694-703
2. Hull D. Effect of grain size and temperature on slip, twinning and fracture in 3% silicon iron. Acta Metall (1961) 191-204
3. Hull D. Nucleation of cracks by the intersection of twins in α-iron. Philos Mag 3 (1958) 1468-1469
4. Hertzberg R.W. Deformation and fracture mechanics of engineering materials (1983), John Wiley and Sons, New York
5. Landa M., Machová A., Převorovský Z., Červ J., and Adámek J. Crack growth in single crystals of α-iron (3wt.%Si). Czech J Phys 48 (1998) 1589-1606
6. Šmida T., and Bošanský J. Deformation twinning and its possible influence on the ductile brittle transition temperature of ferritic steels. Mater Sci Eng A Struct Mater Prop Microstruct Process 287 (2000) 107-115
7. Bošanský J., and Šmida T. Deformation twins - probable inherent nuclei of cleavage fracture in ferritic steels. Mater Sci Eng A Struct Mater Prop Microstruct Process 323 (2002) 198-205
8. Marsh P.G., Zielinski W., Huang H., and Gerberich W.W. Crack-tip dislocation emission arrangements for equilibrium: III. Application to large applied stress intensities. Acta Metall Mater 40 (1992) 2883-2894
9. Karlík M., Nedbal I., and Siegl J. Microstructure of a reactor pressure vessel steel close to the zones of ductile tearing and cleavage. Mater Sci Eng A Struct Mater Prop Microstruct Process 357 (2003) 423-428
10. Prahl J, Machová A, Landa M, Haušild P, Karlík M, Spielmanová A, et al. Fracture of Fe-3wt.%Si single crystals. Mater Sci Eng A Struct Mater Prop Microstruct Process in press.
11. Lin I.H., and Thomson R. Cleavage, dislocation emission, and shielding for cracks under general loading. Acta Metall 34 (1986) 187-206
12. Rice J.R. Dislocation nucleation from a crack tip: an analysis based on the Peierls concept. J Mech Phys Solids 40 (1992) 239-271
13. Rice J.R., and Beltz G.E. The activation energy for dislocation nucleation at a crack. J Mech Phys Solids 42 (1994) 333-360
14. Beltz G.E., and Fischer L.L. Effect of T-stress on edge dislocation formation at a crack tip under mode I loading. In: Chuang T.J., and Rudnicki J.W. (Eds). Multiscale deformation and fracture in materials and structures (2001), Kluwer Academic Publishers, Boston 237-242
15. Mullins M., and Dokainish M.A. Simulation of the (001) plane crack in á-iron employing a new boundary scheme. Philos Mag A 46 (1982) 771-787
16. Kohlhoff S., Gumbsch P., and Fischmeister H.F. Crack propagation in b.c.c. crystals studied with a combined finite-element and atomistic model. Philos Mag A 64 (1991) 851-878
17. Cheung K.S., and Sidney Y. A molecular-dynamics simulation of crack-tip extension: the brittle-to-ductile transition. Model Simul Mater Sci Eng 2 (1994) 865-892
18. Shastry V., and Farkas D. Molecular statics simulation of fracture in α-iron. Model Simul Mater Sci Eng 4 (1996) 473-492
19. Landa M., Cerv J., Machová A., and Rosecky Z. Acoustic emission sources by atomistic simulations. J Acoust Emiss 20 (2002) 25-38
20. Machová A., and Beltz G.E. Ductile-brittle behavior of (001)[110] nano-cracks in bcc iron. Mater Sci Eng A Struct Mater Prop Microstruct Process 387-389 (2004) 414-418
21. Beltz G.E., and Machová A. Effect of T-stress on dislocation emission in iron. Scr Mater 50 (2004) 483-487
22. Spielmannová A. Atomistic simulations of crack stability in alpha iron, Diploma thesis (in Czech), Faculty of nuclear sciences and physical engineering CTU, Prague, Czech republic, 2005.
23. Kadečková S., and Šesták B. The mosaic structure of Fe-3% Si alloy single crystals prepared by floating zone melting at different growing rates. Krist Tech 4 (1969) 243-252
24. Dienes G.J., and Paskin A. Molecular dynamic simulation of crack propagation. J Phys Chem Solids 48 (1987) 1015-1033
25. Harris D O. Stress Intensity Factors for Hollow Circumferentially Notched Round Bars. J Bas Engng, Trans ASME, Series D 1967; B9: 49-54.
26. Rice J.R. Limitations to the small scale yielding approximation for crack tip plasticity. J Mech Phys Solids 22 (1974) 17-26
27. Fett T. A compendium of T-stress solutions. Research report FZKA vol. 6057 (1998), Forschungszentrum Karlsruhe GmbH, Karlsruhe, Germany