Abstract
In additive manufacturing (AM) the moving heat source and layer deposition gives rise to each volume of material receiving a complex thermal history. In addition, the machine control systems can vary the heat input as a function of the component geometry and process themes. Together, this can potentially cause both short and long range microstructure heterogeneity, which can potentially impact on the local mechanical properties of AM components. To systematically quantify the heterogeneity typically seen in the lamellar microstructures found in AM titanium parts, a tool has been developed that combine’s automatic high resolution SEM image mapping with batch image analysis, to enable efficient quantification over large areas at the required resolution. This method has been applied to parts produced in Ti6Al4V by selective electron beam melting using an Arcam machine. The method and test cases are described, where both long and short range heterogeneity have been identified in samples and correlated to the build parameters.
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
L. E. Murr et al., “Metal Fabrication by Additive Manufacturing Using Laser and Electron Beam Melting Technologies,” J. Mater. Sci. Technol., 28 (2012), 1–14.
E. Brandl et al., “Additive manufactured Ti-6A1–4V using welding wire: Comparison of laser and arc beam deposition and evaluation with respect to aerospace material specifications,” Phys. Procedia, 5 (2010), 595–606.
A. A. Antonysamy “Microstructure, Texture and Mechanical Property Evolution during Additive Manufacturing of Ti6Al4V Alloy for Aerospace Applications” (Ph. D. thesis University of Manchester, 2012).
B. Baufeld O. V. D. Biest and R. Gault “Additive manufacturing of Ti-6Al-4V components by shaped metal deposition: Microstructure and mechanical properties,” Mater. Des., 31 (2010), 106–111.
S. Leuders et al., “On the mechanical behaviour of titanium alloy TiAl6V4 manufactured by selective laser melting: Fatigue resistance and crack growth performance,” International Journal of Fatigue, 48 (2013), 300–307.
B. Song S. Dong B. Zhang H. Liao and C. Coddet “Effects of processing parameters on microstructure and mechanical property of selective laser melted Ti6Al4V,” Mater. Des., 35 (2012), 120–125.
S. S. Al-Bermani M. L. Blackmore W. Zhang and I. Todd “The origin of microstructural diversity, texture, and mechanical properties in electron beam melted Ti-6Al-4V,” Metall. Mater. Trans. A Phys. Metall. Mater. Sci., 41 (2010), 3422–3434.
A. A. Antonysamy “The Effect of Integrating Rolling Deformation with Wire Arc Additive Manufacturing of Ti-6Al-4V – on Grain Size and Texture Refinement”, Material Characterisation, 84(2013), 153–168.
L. Tan and Jean Jiang Digital Signal Processing (Second Edition) (New York, NY: Elsevier Inc., 2013), 692–718.
John W. Woods Multidimensional Signal, Image and Video Processing and Coding (New York, NY: Elsevier Inc., 2013), 223–255.
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
Zhao, H., Antonysamy, A.A., Meyer, J., Ciuca, O., Williams, S.T., Prangnell, P.B. (2015). Automated Multi-Scale Microstructure Heterogeneity Analysis of Selective Electron Beam Melted TiAl6V4 Components. In: TMS 2015 144th Annual Meeting & Exhibition. Springer, Cham. https://doi.org/10.1007/978-3-319-48127-2_54
Download citation
DOI: https://doi.org/10.1007/978-3-319-48127-2_54
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)