Microstructure and Tensile Properties of Hot Worked High Nb Containing TiAl Alloy on Industrial Scale

Abstract:

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. A hot working and its effect on the microstructure and tensile properties of Ti-45Al-9 (Nb, W, B, Y) alloy ingot on industrial scale were investigated. The results showed that the alloy has good workability in anα+γphase region. An ingot on industrial scale was successfully extruded followed by multi-step canned forging. The initial microstructure of the alloy is fine full lamellar (FL) microstructure. After hot working a sound pancake exhibiting a fine grain duplex (DP) microstructure with grain size about 20μm was obtained. The as-forged alloy has more balanced tensile properties than the small heats with similar composition and microstructure at both room and high temperatures.

Info:

Periodical:

Materials Science Forum (Volumes 475-479)

Main Theme:

Edited by:

Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie

Pages:

785-788

DOI:

10.4028/www.scientific.net/MSF.475-479.785

Citation:

J. P. Lin et al., "Microstructure and Tensile Properties of Hot Worked High Nb Containing TiAl Alloy on Industrial Scale", Materials Science Forum, Vols. 475-479, pp. 785-788, 2005

Online since:

January 2005

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$35.00

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