Hostname: page-component-586b7cd67f-vdxz6 Total loading time: 0 Render date: 2024-11-24T09:17:40.208Z Has data issue: false hasContentIssue false
  • English
  • Français

Shear band widening mechanism in Ti–6Al–4V under high strain rate deformation

Published online by Cambridge University Press:  12 March 2020

Anuj Bisht ,
Subhash Kumar ,
Ka Ho Pang ,
Rongxin Zhou ,
Anish Roy ,
Vadim V. Silberschmidt  and
Satyam Suwas
Anuj Bisht*
Affiliation:
Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India
Subhash Kumar
Affiliation:
Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India
Ka Ho Pang
Affiliation:
Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough LE11 3TU, U.K.
Rongxin Zhou
Affiliation:
Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough LE11 3TU, U.K.
Anish Roy
Affiliation:
Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough LE11 3TU, U.K.
Vadim V. Silberschmidt
Affiliation:
Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough LE11 3TU, U.K.
Satyam Suwas
Affiliation:
Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India
*
a)Address all correspondence to this author. e-mail: [email protected]
Get access

Abstract

In this study, mechanical properties and microstructural investigation of Ti64 at high strain rate are studied using a split-Hopkinson pressure bar method under compression for temperatures up to 800 °C. Flow softening in the mechanical response of material to such loading conditions hints at instability in compression, which increases with an increase in temperature. Microstructural characterization of the deformed material is characterized using the electron-backscattered diffraction technique. It reveals the presence of instabilities in Ti64 in the form of a fine network of shear bands. The shear band width grows with an increase in temperature along with the area fraction of shear band in the material, displaying its improved capacity to contain microstructural instabilities at higher temperature. After a detailed microstructural investigation, a mechanism for shear band widening is proposed. Based on this mechanism, a path generating nuclei within shear bands is discussed.

Keywords

Tistress/strain relationshiptexture
Type
Article
Information
Journal of Materials Research , Volume 35 , Issue 13: Focus Section: Interactions of Shear Transformation Bands , 14 July 2020 , pp. 1623 - 1634
Check for updates
Copyright
Copyright © Materials Research Society 2020

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Williams, J.C. and Starke, E.A.: Progress in structural materials for aerospace systems, edited by S. Suresh. Acta Mater. 51, 5775 (2003).10.1016/j.actamat.2003.08.023CrossRefGoogle Scholar
Roy, S., Sarkar, A., and Suwas, S.: On characterization of deformation microstructure in Boron modified Ti–6Al–4V alloy. Mater. Sci. Eng., A 528, 449 (2010).10.1016/j.msea.2010.09.026CrossRefGoogle Scholar
Kailas, S.V., Prasad, Y.V.R.K., and Biswas, S.K.: Flow Instabilities and fracture in Ti–6Al–4V deformed in compression at 298 K to 673 K. Metall. Mater. Trans. A 25, 2173 (1994).10.1007/BF02652318CrossRefGoogle Scholar
Wagoner Johnson, A.J., Bull, C.W., Kumar, K.S., and Briant, C.L.: The influence of microstructure and strain rate on the compressive deformation behavior of Ti–6Al–4V. Metall. Mater. Trans. A 34, 295 (2003).10.1007/s11661-003-0331-6CrossRefGoogle Scholar
Roy, S. and Suwas, S.: The influence of temperature and strain rate on the deformation response and microstructural evolution during hot compression of a titanium alloy Ti–6Al–4V–0.1B. J. Alloys Compd. 548, 110 (2013).10.1016/j.jallcom.2012.08.123CrossRefGoogle Scholar
Murr, L.E., Ramirez, A.C., Gaytan, S.M., Lopez, M.I., Martinez, E.Y., Hernandez, D.H., and Martinez, E.: Microstructure evolution associated with adiabatic shear bands and shear band failure in ballistic plug formation in Ti–6Al–4V targets. Mater. Sci. Eng., A 516, 205 (2009).CrossRefGoogle Scholar
Timothy, S.P. and Hutchings, I.M.: Initiation and growth of microfractures along adiabatic shear bands in Ti–6AI–4V. Mater. Sci. Technol. 1, 526 (1985).CrossRefGoogle Scholar
Xue, Q., Meyers, M.A., and Nesterenko, V.F.: Self-organization of shear bands in titanium and Ti–6Al–4V alloy. Acta Mater. 50, 575 (2002).10.1016/S1359-6454(01)00356-1CrossRefGoogle Scholar
Yang, Y. and Wang, B.F.: Dynamic recrystallization in adiabatic shear band in α-titanium. Mater. Lett. 60, 2198 (2006).CrossRefGoogle Scholar
Kuang, L., Chen, Z., Jiang, Y., Wang, Z., Wang, R., and Liu, C.: Adiabatic shear behaviors in rolled and annealed pure titanium subjected to dynamic impact loading. Mater. Sci. Eng., A 685, 95 (2017).CrossRefGoogle Scholar
Li, Z., Wang, B., Zhao, S., Valiev, R.Z., Vecchio, K.S., and Meyers, M.A.: Dynamic deformation and failure of ultrafine-grained titanium. Acta Mater. 125, 210 (2017).CrossRefGoogle Scholar
Peirs, J., Tirry, W., Amin-Ahmadi, B., Coghe, F., Verleysen, P., Rabet, L., Schryvers, D., and Degrieck, J.: Microstructure of adiabatic shear bands in Ti6Al4V. Mater. Charact. 75, 79 (2013).10.1016/j.matchar.2012.10.009CrossRefGoogle Scholar
Chichili, D.R., Ramesh, K.T., and Hemker, K.J.: Adiabatic shear localization in α-titanium: Experiments, modeling and microstructural evolution. J. Mech. Phys. Solids 52, 1889 (2004).10.1016/j.jmps.2004.02.013CrossRefGoogle Scholar
Rittel, D., Landau, P., and Venkert, A.: Dynamic recrystallization as a potential cause for adiabatic shear failure. Phys. Rev. Lett. 101, 165501 (2008).10.1103/PhysRevLett.101.165501CrossRefGoogle ScholarPubMed
Zhang, Z., Eakins, D.E., and Dunne, F.P.E.: On the formation of adiabatic shear bands in textured HCP polycrystals. Int. J. Plast. 79, 196 (2016).10.1016/j.ijplas.2015.12.004CrossRefGoogle Scholar
Meyers, M.A., Nesterenko, V.F., LaSalvia, J.C., and Xue, Q.: Shear localization in dynamic deformation of materials: Microstructural evolution and self-organization. Mater. Sci. Eng., A 317, 204 (2001).CrossRefGoogle Scholar
Lee, W-S. and Lin, C-F.: High-temperature deformation behaviour of Ti6Al4V alloy evaluated by high strain-rate compression tests. J. Mater. Process. Technol. 75, 127 (1998).10.1016/S0924-0136(97)00302-6CrossRefGoogle Scholar
Hutchinson, J.W. and Tvergaard, V.: Shear band formation in plane strain. Int. J. Solids Struct. 17, 451 (1981).CrossRefGoogle Scholar
Xing, D., Bai, Y.L., Min, C., and Huang, X.L.: On post-instability processes in adiabatic shear in hot rolled steel. J. Mech. Phys. Solids 39, 1017 (1991).10.1016/0022-5096(91)90050-XCrossRefGoogle Scholar
Xu, Y., Bai, Y., and Meyers, M.A.: Deformation, phase transformation and recrystallization in the shear bands induced by high-strain rate loading in titanium and its alloys. J. Mater. Sci. Technol. 22, 737 (2006).Google Scholar
Walley, S.M.: Shear localization: A historical overview. Metall. Mater. Trans. A 38, 2629 (2007).CrossRefGoogle Scholar
Antolovich, S.D. and Armstrong, R.W.: Plastic strain localization in metals: Origins and consequences. Prog. Mater. Sci. 59, 1 (2014).10.1016/j.pmatsci.2013.06.001CrossRefGoogle Scholar
Roy, S. and Suwas, S.: On the absence of shear cracking and grain boundary cavitation in secondary tensile regions of Ti–6Al–4V–0.1B alloy during hot (α + β)-compression. Philos. Mag. 94, 447 (2014).CrossRefGoogle Scholar
Molinari, A., Musquar, C., and Sutter, G.: Adiabatic shear banding in high speed machining of Ti–6Al–4V: Experiments and modeling. Int. J. Plast. 18, 443 (2002).CrossRefGoogle Scholar
Hong, C.S., Tao, N.R., Huang, X., and Lu, K.: Nucleation and thickening of shear bands in nano-scale twin/matrix lamellae of a Cu–Al alloy processed by dynamic plastic deformation. Acta Mater. 58, 3103 (2010).10.1016/j.actamat.2010.01.049CrossRefGoogle Scholar
Seshacharyulu, T., Medeiros, S.C., Frazier, W.G., and Prasad, Y.V.R.K.: Microstructural mechanisms during hot working of commercial grade Ti–6Al–4V with lamellar starting structure. Mater. Sci. Eng., A 325, 112 (2002).10.1016/S0921-5093(01)01448-4CrossRefGoogle Scholar
Liu, X., Tan, C., Zhang, J., Hu, Y., Ma, H., Wang, F., and Cai, H.: Influence of microstructure and strain rate on adiabatic shearing behavior in Ti–6Al–4V alloys. Mater. Sci. Eng., A 501, 30 (2009).CrossRefGoogle Scholar
Zhou, R., Pang, K.H., Bisht, A., Roy, A., Suwas, S., and Silberschmidt, V.V.: Modelling strain localization in Ti–6Al–4V at high loading rate: A phenomenological approach. Philos. Trans. R. Soc., A 378, 12 (2019).Google ScholarPubMed
Mironov, S., Murzinova, M., Zherebtsov, S., Salishchev, G.A., and Semiatin, S.L.: Microstructure evolution during warm working of Ti–6Al–4V with a colony-α microstructure. Acta Mater. 57, 2470 (2009).CrossRefGoogle Scholar
Paton, N.E. and Backofen, W.A.: Plastic deformation of titanium at elevated temperatures. Metall. Trans. 1(10), pp.2839–2847. (1970).Google Scholar
Davidson, D.L., Lindholm, U.S., and Yeakley, L.M.: The deformation behavior of high purity polycrystalline iron and single crystal molybdenum as a function of strain rate at 300 K. Acta Metall. 14, 703 (1966).CrossRefGoogle Scholar
Bachmann, F., Hielscher, R., Jupp, P.E., Pantleon, W., Schaeben, H., and Wegert, E.: Inferential statistics of electron backscatter diffraction data from within individual crystalline grains. J. Appl. Crystallogr. 43, 1338 (2010).10.1107/S002188981003027XCrossRefGoogle Scholar