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Texture Evolution in Boron Modified Ti-6Al-4V Alloy

Roy, Shibayan and Gurao, Nilesh and Suwas, Satyam and Tamirisakandala, S and Srinivasan, R and Miracle, DB (2009) Texture Evolution in Boron Modified Ti-6Al-4V Alloy. In: 15th International Conference on Textures of Materials, JUN 01-06, 2008, Pittsburgh, PA, pp. 585-592.

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/9780470...


Owing to their high strength-to-weight ratio, excellent mechanical properties and corrosion resistance, titanium (Ti) and its alloys, especially (alpha+beta) alloys like Ti-6Al-4V is the backbone materials for aerospace, energy, and chemical industries. Trace boron addition (similar to 0.1 wt. %) to the alloy Ti-6Al-4V produces a reduction in as-cast grain size by roughly an order of magnitude resulting in enhanced ductility, higher stiffness, strength and good fracture resistance. Boron addition could also affect the evolution of texture and microstructure in the material. The solidification microstructures of Boron free as well as Boron containing Ti-6Al-4V are found to be almost homogeneous from periphery towards the center of as-cast ingot in terms of both alpha-colony size and distribution. Boron addition substantially reduces alpha-colony size (similar to 50-80 mu m). A gradual change in alpha texture from periphery towards the center has been observed with orientations close to specific texture components suggesting the formation of texture zones. The mechanism of texture evolution can be visualized as a result of variant selection during solidification through (alpha+beta) phase field.

Item Type: Conference Paper
Additional Information: Copyright of this article belongs to Amer Ceramic Soc.
Keywords: Ti-6Al-4V;texture evolution;boron;EBSD
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Depositing User: Id for Latest eprints
Date Deposited: 08 Apr 2011 06:24
Last Modified: 03 Nov 2018 12:10
URI: http://eprints.iisc.ac.in/id/eprint/36586

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