journal article·2003-10

Analysis of elastic-plastic deformation in TiAl polycrystals

Robert A. Brockman

Publisher page

Abstract

A computational model is described for analyzing stress variations within polycrystals of γ-TiAl, including the effect of anisotropic yielding and small-scale plastic flow. Interlamellar (soft mode) slip behavior is controlled by a separate collection of slip systems whose properties are derived from measurements on polysynthetically twinned (PST) specimens. When used to represent several hundred randomly oriented material grains, the model provides distributions and statistical data about the local stress, strain, and plastic deformation resulting from a prescribed macroscopic loading.
Source: expertdata · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Intermetallics and Advanced Alloy Properties · MXene and MAX Phase Materials · Microstructure and mechanical properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

References (29)

Show source-provided references
1. A computational procedure for rate-independent plasticity10.1016/0022-5096(96)00001-4 ↗
2. Microstructure and deformation of two-phase γ-titanium aluminides10.1016/S0927-796X(97)00018-1 ↗
3. A hybrid finite element formulation for polycrystal plasticity with consideration of macrostructural and microstructural linking10.1016/S0749-6419(99)80003-5 ↗
4. A theoretical derivation of the plastic properties of a polycrystalline face-centered metal10.1080/14786444108561385 ↗
5. Deformation and fracture under compressive loading in lamellar TiAl microstructures10.1080/01418619608243529 ↗
6. Frank, G.J., 1999. University of Dayton Research Institute. Private communication.
7. A crystallographic model for the study of local deformation processes in polycrystals10.1016/S0749-6419(99)00002-9 ↗
8. Yield and fracture of lamellar γ/α2 TiAl alloys10.1016/0921-5093(94)03216-5 ↗
9. Room-temperature tensile deformation of polysynthetically twinned (PST) crystals of TiAl10.1016/0956-7151(92)90472-Q ↗
10. Numerical simulations of plastic deformation and fracture effects in two phase γ-TiAl and α2-Ti3Al lamellar microstructures10.1080/01418619508244469 ↗
11. Numerical simulations of stress–strain behavior in two phase α2+γ lamellar TiAl alloys10.1016/0921-5093(94)03210-6 ↗
12. Apparent Hall–Petch effects in polycrystalline lamellar TiAl10.1080/01418619708210284 ↗
13. Kim, M.-C., Nomura, M., Vitek, V., Pope, D.P., 1999. Deformation of polysynthetically twinned TiAl single crystals with near-hard orientation. Mater. Res. Soc. Symp. Proc. 552, KK3.1.1–6.10.1557/PROC-552-KK3.1.1 ↗
14. Plastic flow of γ–TiA1–based polysynthetically twinned crystals: micromechanical modeling and experimental validation10.1016/S1359-6454(98)00132-3 ↗
15. Marketz, W.T., Fischer, F.D., Clemens, H. 1999. Deformation behavior of gamma titanium aluminides—micromechanical modeling of single PST crystals and polycrystalline materials. In: Kim, Y.-K., Dimiduk, D.M., Loretto, M.H. (Eds.), Gamma Titanium Aluminides 1999. The Minerals, Metals, and Materials Society, pp. 579–586.
16. Marketz, W.T., Fischer, F.D., Clemens, H. Deformation mechanisms in TiAl intermetallics—experiments and modeling. Int. J. Plasticity (in press).10.1016/S0749-6419(01)00036-5 ↗
17. Polycrystal plasticity modeling of intracrystalline boundary textures10.1016/S1359-6454(98)00386-3 ↗
18. Exact moduli of anisotropic laminates
19. Numerical simulation of the plastic behavior of polysynthetically twinned Ti-Al crystals10.1016/0921-5093(94)03229-7 ↗
20. Flow behavior of PST and fully lamellar polycrystals of Ti-48Al in the microstrain regime10.1016/S1359-6454(98)00067-6 ↗
21. Effects of interactions among crystals on the inhomogeneous deformations of polycrystals10.1016/1359-6454(95)00309-6 ↗
22. A continuum framework for finite viscoplasticity10.1016/S0749-6419(00)00080-2 ↗
23. Micromechanical modelling of TiAl intermetallics10.1016/S0927-0256(96)00057-2 ↗
24. The role of slip and twinning in the deformation behaviour of polysynthetically twinned crystals of TiAl10.1080/01418619708207193 ↗
25. Numerical simulation of yield loci for PST crystals of TiAl10.1016/S0921-5093(97)00668-0 ↗
26. Aspects of non-associated single crystal plasticity10.1016/S0020-7683(97)00241-2 ↗
27. Plastic strain in metals
28. Yamaguchi, M., Inui, H., 1993. TiAl compounds for structural applications. In: Dariola, R., Lewandowski, J.J., Liu, C.T., Martin, P.L., Miracle, D.B., Nathal, M.V. (Eds.), Structural Intermetallics. The Minerals, Metals, and Materials Society, pp. 127–142.
29. Physical constants, deformation twinning, and microcracking of titanium aluminide10.1007/s11661-998-0158-2 ↗