NUMERICAL STUDY OF STRESS-STRAIN LOCALIZATION IN THE TITANIUM SURFACE MODIFIED BY AN ELECTRON BEAM TREATMENT

Ruslan Balokhonov, Varvara Romanova, Alexey Panin, Sergey Martynov, Marina Kazachenok

DOI Number
10.22190/FUME1603329B
First page
329
Last page
334

Abstract

Numerical simulation is performed to investigate the mesoscale stress-strain localization in a surface-modified commercial titanium alloy. The calculated crystalline microstructure corresponds to that observed in experiments and is accounted for in an explicit way as initial conditions of a dynamic boundary-value problem. The latter is stated in terms of plane strain developing in microstructure subjected to tension and is solved numerically by the finite-difference method. Elastic-plastic constitutive models were built to describe the experimental mechanical response both of the substrate and of the modified layer. Plastic strain localization is found to depend on the grain yield strength.

Keywords

Microstructure-based Numerical Simulation, Plastic Strain Localization, Titanium Alloys, Surface-modified Materials

Full Text:

PDF

References

Antolovich, S.D., Armstrong, R.W., 2014, Plastic strain localization in metals: origins and consequences, Progress in Materials Science, 59, pp. 1–160.

Becker, R., Needleman, A., 1986, Effect of yield surface curvature on necking and failure in porous plastic solids, J. Appl. Mech., 53, pp. 491–499.

Xue, L., 2010, Localization conditions and diffused necking for damage plastic solids, Engineering Fracture Mechanics, 77, pp. 1275–1297.

Wang, Y.Y., Sun, X., Wang, Y.D., Hu, X.H., Zbib, H.M., 2014, A mechanism-based model for deformation twinning in polycrystalline FCC steel, Materials Science & Engineering A, 607, pp. 206–218.

Borg, U., 2007, Strain gradient crystal plasticity effects on flow localization. International Journal of Plasticity, 23, pp. 1400–1416

Anand, L., Aslan, O., Chester, S.A., 2012, A large-deformation gradient theory for elastic–plastic materials: Strain softening and regularization of shear bands, International Journal of Plasticity, 30–31, pp. 116–143.

Mroginski J.L., Guillermo E., 2014, Discontinuous bifurcation analysis of thermodynamically consistent gradient poroplastic materials, International Journal of Solids and Structures, 51, pp. 1834–1846

Llorca, J., Needleman, A., Suresh, S., 1991, An analysis of the effects of matrix void growth on deformation and ductility in metal-ceramic composites, Acta Metallurgica et Materialia, 39, pp. 2317-2335.

Needleman, A., 2000, Computational mechanics at the mesoscale. Acta Materialia, 48, pp. 105-124.

Panin, V.E., (Eds.), 1998, Physical mesomechanics of heterogeneous media and computer-aided design of materials, Cambridge International Science Publishing, Cambridge, 380 pp.

Diard, O., Leclercq, S., Rousselier, G., and Cailletaud, G., 2005, Evaluation of finite element based analysis of 3D multicrystalline aggregates plasticity: Application to crystal plasticity model identification and the study of stress and strain fields near grain boundaries, International Journal of Plasticity, 21, pp. 691-722.

Williams, J.J., Segurado, J., LLorca, J., Chawla, N., 2012, Three dimensional (3D) microstructure-based modeling of interfacial decohesion in particle reinforced metal matrix composites, Materials Science & Engineering A, 557, pp. 113–118.

Romanova V.A., Balokhonov R.R., 2009, Numerical simulation of surface and bulk deformation in three-dimensional polycrystals, Physical Mesomechanics, 12, 3-4, pp. 130-140.

Balokhonov R.R., Romanova V.A., Batukhtina E.E., Martynov S.A., Zinovjev A.V., Zinovjeva O.S., 2016, A mesomechanical analysis of the stress-strain localisation in friction stir welds of polycrystalline aluminum alloys, Meccanica, 51 (2), pp. 319-328.

Romanova V., Balokhonov R., Makarov P., Schmauder S. and Soppa E., 2003, Simulation of elasto-plastic behaviour of an artificial 3D-structure under dynamic loading, Computational Materials Science, 28 (3-4), pp. 518–528.

Balokhonov R.R., Romanova V.A., Schmauder S., 2006, Computational analysis of deformation and fracture in a composite material on the mesoscale level, Computational Materials Science, 37, pp. 110–118.

Balokhonov, R.R., Romanova, V.A., 2009, The effect of the irregular interface geometry in deformation and fracture of a steel substrate–boride coating composite, International Journal of Plasticity, 25 (11), pp. 2225-2248.

Balokhonov R.R., Zinovjev A.V., Romanova V.A., Bakeev R.A, Zinovjeva O.S., 2016, Numerical simulation of deformation and fracture in a material with a polysilazane-based coating, Physical Mesomechanics, 19 (4), pp. 430-440.

Panin A.V., Kazachenok M.S., Kretova O.M., Perevalova O.B., Ivanov Y.F., Lider A.M., Stepanova O.M., and Kroening M.H., 2013, The effect of electron beam treatment on hydrogen sorption ability of commercially pure titanium, Appl. Surf. Scie., 284, pp. 750–756.




DOI: http://dx.doi.org/10.22190/FUME1603329B

Refbacks

  • There are currently no refbacks.


ISSN: 0354-2025 (Print)

ISSN: 2335-0164 (Online)

COBISS.SR-ID 98732551

ZDB-ID: 2766459-4