Nucleation and propagation of deformation twin in polysynthetically twinned TiAl

CMES - Computer Modeling in Engineering and Sciences

Volumn 6, Issue 3, 2004, Pages 245-251

  Zhou, L G ^a   Hsiung, L M ^b   Huang, Hanchen ^a  

^a RENSSELAER POLYTECHNIC INSTITUTE   (United States)

^b LAWRENCE LIVERMORE NATIONAL LABORATORY   (United States)

Author keywords

Dislocation; Interface; Molecular dynamics; TiAl; Twin

Indexed keywords

ALUMINUM; COMPUTER SIMULATION; DEFORMATION; DISLOCATIONS (CRYSTALS); INTERFACES (MATERIALS); INTERMETALLICS; NUCLEATION; STACKING FAULTS; TITANIUM ALLOYS; TITANIUM COMPOUNDS; TWINNING;

DISLOCATION; POLYSYNTHETICALLY TWINNED (PST) TIAL; TIAL; TWIN;

MOLECULAR DYNAMICS;

EID: 8344284416     PISSN: 15261492     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (21)

1. Appel, F.; Wagner, R. (1998): Microstructure and deformation of two-phase gamma-titanium aluminides. Mater Sci Eng R, vol.22, pp. 187-268.
2. Clarke, A. S., Jonsson, H. (1993): Structural-changes accompanying densification of random hard-sphere packings. Phys Rev E, vol. 47, pp. 3975-3984.
3. Farenc, S.; Coujou, A.; Couret, A. (1993): An insitu study of twin propagation in TiAl. Philo Mag A, vol. 67, pp. 127-142
4. Feng, C. R.; Michel, D. J.; Crowe, C. R. (1989): Twinning in TiAl. Script Metal, vol. 23, pp. 1135-1140.
5. Ghoniem, N. M.; Cho, K. (2002): The emerging role of multiscale modeling in nano- and micro-mechanics of materials. CMES: Computer Modeling in Engineering & Sciences, vol. 3, pp. 147-174.
6. Hsiung, L. M.; Nieh, T. G. (1997): The evolution of deformation substructure in a creep deformed full-lamellar TiAl alloy. Mater Sci Eng A, vol. 239-240, pp. 438-444.
7. Hsiung, L. M.; Nieh, T. G.; Choi, B. W.; Wadsworth, J. (2002): Interfacial dislocations and deformation twinning in fully lamellar TiAl. Mater Sci Eng A, vol.329, pp. 637-643.
8. Inui, H.; Oh, M. H.; Nakamura, A.; Yamaguchi, M. (1992): Room-temperature tensile deformation of polysynthetically twinned (PST) crystals of TiAl. Acta Metal Mater, vol. 40, pp. 3095-3104.
9. Jin, Z.; Bieler, T. R. (1995): An in-situ observation of mechanical twin nucleation and propagation in TiAl. Philo Mag A, vol. 71, pp. 925-947.
10. Kim, H. Y.; Maruyama, K. (2003): Stability of lamellar microstructure of hard orientated PST crystal of TiAl alloy. Acta Mater, Vol. 51, pp. 2191-2204.
11. Liang, H.; Woo, C. H.; Huang, H; Ngan, A. H. W.; Yu, T. X. (2004): Crystalline plasticity on copper (001), (110), and (111) surfaces during nanoindentation. CMES: Computer Modeling in Engineering & Sciences, Vol. 6, pp. 105-114
12. Liu, C. T.; Maziasz, P. J. (1998): Microstructural control and mechanical properties of dual-phase TiAl alloys. Intermetallics, vol. 6, pp. 653-661.
13. Liu, C. T.; Schneibel, J. H.; Maziasz, P. J.; Wright, J. L.; Easton, D. S. (1996): Tensile properties and fracture toughness of TiAl alloys with controlled microstructures. Intermetallics, vol. 4, pp. 429-440.
14. Liu, W. C.; Shi, S. Q.; Woo, C. H.; Huang, H. (2002): Dislocation nucleation and propagation during thin film deposition under tension. CMES: Computer Modeling in Engineering & Sciences, vol. 3, pp. 213-218.
15. Maruyama, K.; Yamamoto, R.; Nakakuki, H.; Fujitsuna, N. (1997): Effects of lamellar spacing, volume fraction and grain size on creep strength of fully lamellar TiAl alloys. Mater Sci Eng A, vol. 240, pp. 419-428.
16. Morris, M. A.; Lipe, T. (1997): Creep deformation of duplex and lamellar TiAl alloys. Intermetallics, vol. 5, pp. 329-337.
17. Parrinello, M.; Rahman, A. (1981): Polymorphic transitions in single-crystals - a new molecular-dynamics method. J Appl Phys, vol. 52, pp. 7182-7190.
18. Parthasarathy, T. A.; Subramanian, P. R.; Mendiratta, M. G.; Dimiduk, D. M. (2000): Phenomenological observations of lamellar orientation effects on the creep behavior of Ti-48at. %A1 PST crystals. Acta Mater, vol. 48, pp. 541-551.
19. Wegmann, G.; Suda, T; Maruyama, K. (2000): Deformation characteristics of polysynthetically twinned (PST) crystals during creep at 1150 K. Intermetallics, vol. 8, pp. 165-177.
20. 3Al/TiAl structure. Soli Stat Comm, vol. 126, pp. 217-221.
21. Zope, R. R.; Mishin, Y. (2003) Interatomic potentials for atomistic simulations of the Ti-Al system. Phys Rev B, vol. 68, pp. 024102.