Abstract
The effect of microstructural anisotropy on the mechanical behavior of a hot rolled Ti-6Al-4V alloy has been investigated. Quasi-static and dynamic experiments in compression and tension were conducted on specimens with their deformation axis aligned along the rolling (RD), transverse (TD), and through thickness (TT) directions. Digital image correlation (DIC) was utilized to observe in-situ the development of deformation fields. Optic al and electron backscatter diffraction (EBSD) microscopy were conducted on pristine and deformed specimens to examine the microstructural evolution for each loading profile. Initial characterization results show that the plate possesses a preferred orientation of the c-axis along the TD direction and about 40° from the TT. This resulted in the TD direction showing a tensile strength ~12% greater than RD and TT for all loading profiles. Post mortem characterization confirms these results as they reveal the presence of adiabatic shear bands with an accompanying localized re-orientation of the c-axes by ~90°, indicative of substantial tensile twinning.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
F. Froes, Titanium: alloying, Encyclopedia of Materials: Science and Technology, (Elsevier Science Ltd., 2001), 9361–9364.
W. Lee and C. Iin, “High temperature deformation behavior of Ti6A14V alloy evaluated by high strain-rate compression tests,” Journal of Materials Processing Technology, (1998), pp. 127–136.
J. Mllett, G. Whiteman, N. Bourne and G. Gray, “Role of anisotropy in response of Ti-6A14V to shock loading,” Journal of Applied Physics, (2008)
E. Wielewski, G Appleby-Thomas, P. Hazell, and A. Hameed, “Micro-mechanics of spall initiation and propagation in Ti-6A1–4V during shock loading,” Materials Science and Engineering, (2013), pp. 331–339.
J. Zhang, C. Tan, Y. Ren, X. Yu, H. Ma and H. Cai, “Adiabatic shear fracture in Ti-6A1–4V alloy,” Transactions of Nonferrous Metals Society of China, (2011), pp. 2396–5401.
S. Osovski, D. Rittel, P. Landau and A. Venkert, “Mcrostructural effects on adiabatic shear band formation,” Scripta Materialia, (2012), pp. 9–12.
D. Rittel, Z.G Wang, “Themio-mechanical aspects of adiabatic shear failure of AM50 and Ti6A14V alloys,” Mechanics of Materials, (2008), pp. 629–635.
S. Osovski, D. Rittel, A. Venkert, “The respective influence of microstructural and thermal softening on adiabatic shear localization,” Mechanics of Materials, (2013), pp. 11–22.
AS. Khan, YS. Suh, R Kazmi, “Quasi-static and dynamic loading responses and constitutive modeling of titanium alloys,” International Journal of Plasticity, (2004), pp. 2233–2248.
N. Biswas, J.L Ding, V.K. Balla, D.P. Field and A. Bandyopadhyay, “Deformation and fracture behavior of laser processed dense and porous Ti6A14V alloy under static and dynamic loading,” Materials Science and Engineering A, (2012), pp. 213–221.
S. Nemat-Nasser, W. Guo, V.F Nesterenko, S.S. Lidrakanti, Y Gu, “Dynamic response of conventional and hot isostatically pressed Ti-6A1–4V alloys: experiments and modeling,” Mechanics of Materials, (2001), pp. 425–439.
E. Wielewski, C.R. Siviour and N. Petrinic, “On the correlation between macrozones and twinning in Ti-6A1–4V at very high strain rates,” Scripta Materialia, (2012), pp. 229–232.
J. Peirs, P. Verleysen, J. Degrieck, “Experimental study of the influence of strain rate on fracture of Ti6M4V,” Procedia Engineering, (2011), pp. 2336–2341.
F. Cogue, W. Tiny, L. Rabet, D. Schryvers and P. Van Houtte, “Importance of twinning in static and dynamic compression of Ti-6A1–4V with an equiaxed microstructure,” Materials Science and Engineering, (2012), pp. 1–10.
D. Leo Prakash, R. Ding, R. Moat, I. Jones, P. Withers, J. Quinta da Fonseca and M. Preuss, “Deformation twinning in Ti-6A1-4V during low strain rate deformation to moderate strains at room temperature,” Materials Science and Engineering A, no. 527, (2010), pp. 5734–5744.
J. Galan, P. Verleysen and J. Degrieck, “Thermal effects during tensile deformation of Ti-6A1–4V at different strain rates,” Strain, no. 49, (2013), pp. 354–365.
A.A. Salem et al., eds., Electron Backscatter Diffraction in Materials Science, (New York, NY: Springer Science+Business Media, 2009), 317.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2016 TMS (The Minerals, Metals & Materials Society)
About this chapter
Cite this chapter
Lock, A.C.H. et al. (2016). Effect of Microstructural Anisotropy on the Dynamic Mechanical Behaviour of Rolled Ti-6Al-4V. In: Ikhmayies, S.J., et al. Characterization of Minerals, Metals, and Materials 2016. Springer, Cham. https://doi.org/10.1007/978-3-319-48210-1_1
Download citation
DOI: https://doi.org/10.1007/978-3-319-48210-1_1
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48623-9
Online ISBN: 978-3-319-48210-1
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)