IJSER Home >> Journal >> IJSER
International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 3    
Website: http://www.ijser.org
scirp IJSER >> Volume 3,Issue 3,March 2012
Superplastic Tensile Behavior Of A Ti-al-mn Alloy
Full Text(PDF, )  PP.326-329  
Mahesh D.C, H.V.Divya, Laxmana Naik. L, B.Yogesha and S.S.Bhattacharya
Superplastic behavior, Ti-Al-Mn alloy, elongation to failure, strain rate
Titanium (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. Titanium alloys such as Ti-6Al-4V is expensive because of the alloying additions like Vanadium are extremely expensive, still this alloy is widely used in aerospace applications by manufacturing the components through superplastic route. The alloy Ti-Al-Mn (made as per the Russian specification, OT4-1) could be a candidate material for replacing the costly Ti-6Al-4V alloys. In the present investigation, tensile tests were carried out on this alloy in the temperature range of I073 K to 1173 K (800 to 900?C) in the strain rate range of 1xI0-5 to 1xI0-2 s-1 in order to characterize the high temperature superplastic deformation behavior. A maximum elongation of 450% was observed at 1123 K at an initial strain rate of 5.52xI0-4 s-1 indicating superplastic behavior of this alloy. From the obtained tensile test results, the optimum superplastic temperature range was identified as I098 to 1148 K at a strain rate range of 1.38xI0-4 to 1.38xI0-3 s-1
[1]Backofen, W.A (1964) Fracture of engineering materials. American Society of Metals, Ohio, 121-124.

[2]Hedworth, J. and M.J. Stowell (1971) Journal of Material Science. 6, 1061-1069.

[3]Padmanabhan, K.A. and G.J. Davies Superplasticity. Springer-Verlang, Berlin, 1980.

[4]Langdon, T.G (1982) Metallurgical Transactions. 13A, 689- 701.

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

[6]Boyer, R.B (1996) An overview on the use of titanium in the aerospace industry. Materials Science and Engineering, A213, 103-114.

Untitled Page