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

Jun Pin Lin; Xiang Jun Xu; Jian Feng Gao; Yan Li Wang; Zhi Lin; Guo Liang  Chen

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

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HomeMaterials Science ForumMaterials Science Forum Vols. 475-479Microstructure and Tensile Properties of Hot...

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

Abstract:

. 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.

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Materials Science Forum (Volumes 475-479)

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785-788

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https://doi.org/10.4028/www.scientific.net/MSF.475-479.785

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Online since:

January 2005

Authors:

Jun Pin Lin, Xiang Jun Xu, Jian Feng Gao, Yan Li Wang, Zhi Lin, Guo Liang Chen

Keywords:

Hot Working, Microstructure, Tensile Properties, Titanium Aluminide Alloy

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