Modelling of plastic deformation in magnesium
Source abstract
Abstract
In the present contribution, a viscoplastic rate-dependent constitutive model based on Schmid’s law has been used to designate the activity level of pure magnesium deformation systems. A crystal plasticity model in the framework of finite elements was used to investigate the deformation systems on the scale of single- and polycrystals. Twinning has been modelled by coupling between finite shear and subsequent lattice rotation. It is shown for pure magnesium, that twinning can affect the slip systems activities and therefore changes the hardening mode within the crystal as a result of crystal reorientation. Furthermore, the twinning evolution during in plane and through-thickness deformation of pure Mg polycrystal rolled plate reveals that tensile {10-12} and compression {10-11} twinning have different effects on the mechanical response.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnesium Alloys: Properties and Applications · Aluminum Alloys Composites Properties · Microstructure and mechanical properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (11)
Show source-provided references
1. Beck, A.: Magnesium und seine Legierungen. Springer, Berlin, 1939.
2. Reed-Hill, R.E., Robertson, W.D.: Deformation of magnesium single crystals by non basal slip. Trans. Metall. Soc. AIME 209, 496–502, 1957.
3. Wonsiewicz, B.C., Backofen, W.A.: Plasticity of magnesium crystals. Trans. Metall. Soc. AIME 239, 1422–1431, 1967.
4. Obara, T., Yoshinga, H., Morozumi, S.: {11-22}<-1-123> slip system in magnesium. Acta Metall. 21, 845–853, 1973.10.1016/0001-6160(73)90141-7 ↗
5. Clausen, B., Tome, C.N., Brown D.W., et al: Reorientation and stress relaxation due to twinning: Modelling and experimental characterization for Mg, Acta Mater, 56, 2456–68, 2008.10.1016/j.actamat.2008.01.057 ↗
6. Lee, E.H.: Elastic-plastic deformation at finite strains. Journal of Applied Mechanic 36, 1–6, 1969.10.1115/1.3564580 ↗
7. Peirce, D., Asaro, R.J., Needleman, A.: Material rate dependence and localized deformation in crystalline solids. Acta Metall. 31, 1951–76, 1983.10.1016/0001-6160(83)90014-7 ↗
8. Kelley, E.W., Hosford, W.F.: Plane-strain compression of magnesium and magnesium alloy crystals.Trans. Metall. Soc. AIME 242, 5–13, 1968.
9. Kelley, E.W., Hosford, W.F.: The deformation characteristics of textured magnesium. Trans. Metall. Soc. AIME 242, 654–661, 1968.
10. Graff, S., Brocks, W., Steglich, D.: Yielding of magnesium: From single crystal to polycrystalline aggregates, Int. J. Plasticity, 23, 1957–1978, 2007.10.1016/j.ijplas.2007.07.009 ↗
11. Huang, Y.: A user-material subroutine incorporating single crystal plasticity in the ABAQUS finite element program, Harvard University, Cambridge, MA, 1991.