Predicting Strength of Titanium Alloys Using Aluminum and Molybdenum Equivalents at Operating Temperatures

Abstract:

This study contains the results of statistical studies of strength of sheeted products and bars made from α-, near α-, and α+β titanium alloys based on their composition. Based on summarizing the literature data, we have studied the ultimate tensile strength after mill annealing of 30 serial and experimental alloys at testing temperatures between 20 and 600°C. We have also substantiated the possibility to evaluate the tensile strength of semi-finished products using the strength equivalents (such as aluminum and molybdenum) of alloying elements and impurities at various temperatures. We have put forth models that help to predict the ultimate strength of titanium alloys based on their composition and the operating temperature with a confidence level of 0.95 and statistical errors comparable with the regulated spread.

• Periodical: Defect and Diffusion Forum (Volume 410)
• Pages: 15-20
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.410.15
• Online since: August 2021
• Authors: Yuliia B. Egorova, Lyudmila V. Davydenko*, Alisa V. Shmyrova
• Keywords: Aluminum and Molybdenum Equivalents, Molybdenum Equivalents, Predicting Properties, Statistical Study, Strength, Test Temperature, Titanium Alloys

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