Low Temperature Transformations in β-Metastable Ti 5553 Titanium Alloy

Abstract:

Precipitation decomposition in β metastable phase in TI 5553 alloy were characterized by electrical resistivity and high energy X-ray diffraction for two thermal paths, isothermal transformation at 325°C after direct quenching, or cooling to room temperature and further ageing at 325°C. Both treatments led to different transformation sequences with formation of ω and/or α''. Mean cell parameters of β and α'' were characterized all along the transformation. Results suggest a transformation with poor solute partitioning and building of large stresses in each phase.

• Periodical: Materials Science Forum (Volumes 738-739)
• Pages: 97-102
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.738-739.97
• Online since: January 2013
• Authors: A. Settefrati, E. Aeby-Gautier, B. Appolaire, M. Dehmas, G. Geandier, G. Khelifati
• Keywords: High-Energy X-Ray Diffraction, Kinetic, Titanium Alloy, α'' Precipitation, ω Precipitation

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