Abstract
With Ti alloys like Ti-6Al-4V, the solidification conditions across virtually all AM platforms lead to strongly textured, coarse columnar, β grain structures. Transformation to α on cooling dilutes the texture, but significant texture is still inherited which contributes to undesirable anisotropy in AM parts. In the work presented a deformation step has been integrated into the manufacture of components produced by the blown powder method, using an Ultrasonic Impact Treatment (UIT), which has the additional benefit of reducing residual stresses. It has been found that the introduction of surface deformation to each layer can lead to a greatly refined grain structure with a more randomised texture. To investigate the origin of this effect, reconstruction of the β grain structure and texture from the α EBSD measurements has been used to characterise the high temperature β microstructure.
Access provided by Autonomous University of Puebla. Download to read the full chapter text
Chapter PDF
Similar content being viewed by others
References
P. Kobryn N. Ontko L. Perkins and J. Tiley (2006).
S. S. Al-Bermani M. L. Blackmore W. Zhang and I. Todd Metall. Mater. Trans. A 41, 3422 (2010).
A. A. Antonysamy J. Meyer and P. B. Prangnell Mater. Charact. (2013).
F. Wang S. Williams P. Colegrove and A. A. Antonysamy, Metall. Mater. Trans. A 44, 968 (2012).
P. Colegrove H. E. Coules J. Fairman F. Martina T. Kashoob H. Mamash and L. D. Cozzolino J. Mater. Process. Technol. 213, 1782 (2013).
K. Taminger and R. Hafley NATO AVT (2006).
S. Reginster A. Mertens H. Paydas J. Tchuindjang Q. Contrepois T. Dormal O. Lemaire and J. Lecomte-Beckers Mater. Sci. Forum 765, 413 (2013).
R. R. Boyer Mater. Sci. Eng. A 213, 103 (1996).
G. Lütjering Mater. Sci. Eng. A 243, 32 (1998).
M. J. Bermingham S. D. McDonald M. S. Dargusch and D. H. StJohn J. Mater. Res. 23, 97 (2011).
M. J. Bermingham S. D. McDonald K. Nogita D. H. St. John, and M. S. Dargusch Scr. Mater. 59, 538 (2008).
G. Lütjering and J. C. Williams, Titanium, 2nd ed. (Springer, Berlin, n.d.).
W. G. Burgers Phys. I 561 (1933).
L. Hacini N. Lê and P. Bocher Exp. Mech. 49, 775 (2008).
D. F. O. Braga H. E. Coules T. Pirling V. Richter-Trummer P. Colegrove and P. M. S. T. de Castro J. Mater. Process. Technol. 213, 2323 (2013).
A. A. Antonysamy Microstructure, Texture and Mechanical Property Evolution during Additive Manufacturing of Ti6Al4V Alloy for Aerospace Applications, University of Manchester, 2012.
S. Roy and J. Fisher Int. J. Steel Struct. (2005).
P. S. Davies An Investigation of Microstructure and Texture Evolution in the Near-Α Titanium Alloy Timetal 834, University of Sheffield, 2009.
E. Brandl A. Schoberth and C. Leyens Mater. Sci. Eng. A 532, 295 (2012).
P. Kobryn and S. Semiatin J. Mater. Process. Technol. 135, 330 (2003).
Author information
Authors and Affiliations
Editor information
Rights and permissions
Copyright information
© 2015 TMS (The Minerals, Metals & Materials Society)
About this paper
Cite this paper
Donoghue, J., Sidhu, J., Wescott, A., Prangnell, P. (2015). Integration of Deformation Processing with Additive Manufacture of Ti-6Al-4V Components for Improved β Grain Structure and Texture. In: TMS 2015 144th Annual Meeting & Exhibition. Springer, Cham. https://doi.org/10.1007/978-3-319-48127-2_55
Download citation
DOI: https://doi.org/10.1007/978-3-319-48127-2_55
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48608-6
Online ISBN: 978-3-319-48127-2
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)