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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 12    
Website: http://www.ijser.org
scirp IJSER >> Volume 2, Issue 12, December 2011
Superplastic hemispherical Bulge Forming of a Ti-Al-Mn Alloy
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B.Yogesha & S. S. Bhattacharya
Ti-Al-Mn (OT4-1) alloy, superplastic forming, bulge forming, forming pressure
Superplastic sheet thermoforming has been identified as a standard processing route for the production of complex shapes, especially in the aerospace industry. Ti-Al-Mn (OT4-1) alloy is currently being used for aero engine components as well as other aerospace applications by forming through a conventional route which is typically cost, labour and equipment intensive. The Ti-Al-Mn alloy (made as per the Russian specification, OT4-1) is a candidate material for aerospace applications. However, there is virtually little or no information available on its superplastic forming behavior. In this paper the superplastic deformation capability of the Ti-Al-Mn alloy was studied. Sheets of 1 mm thickness were successfully bulge formed to a hemispherical component of 90 mm diameter using a sheet thermoforming route.
1. Padmanabhan, K.A. and G.J. Davies Superplasticity. Springer-Verlang, Berlin, 1980.

2. Langdon, T.G (1982) Metallurgical Transactions. 13A, 689-701.

3. Pilling, J. and N. Ridley Superplasticity in Crystalline solids” Institute of Metals, 1989.

4. Bhattacharya, S.S and K.A. Padmanabhan (1989) Procedings of NMD, Indian Institute of Metals, Calcutta.

5. Boyer, R.B (1996) An overview on the use of tita-nium in the aerospace industry. Materials Science and Engineering, A213, 103-114.

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