Turbine blades for airplanes work in adverse conditions, under corrosive environment and high temperatures and pressure conditions. Ti-6Al-2Sn-4Zr-2Mo alloy was developed for high temperatures applications in aerospace area. In this work, Ti-6Al-2Sn-4Zr-2Mo alloy was obtained by powder metallurgy using titanium hydride powders. Samples were manufactured by blended elemental method from a sequence of uniaxial and cold isostatic pressing with subsequent densification by sintering among 800 up to 1400°C, in vacuum. The objective of this work is the analysis of microstructural evolution from the powders dissolution with the increase of the sintering temperature. The alloy was characterized by scanning electron microscopy, X-ray diffraction and Vickers microhardness measurement. Density was measured by Archimedes method. The results show that a α+β (Widmanstätten) homogenous microstructure is obtained in the whole sample extension with the increase of the sintering temperature from the dissolution of molybdenum particles.
Development of titanium alloys production for high temperatures applications
Sae Technical Papers
SAE Brasil 2010 Congress and Exhibit ; 2010
2010-10-06
Conference paper
English
Titanium alloys for high temperature applications
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