Microstructure and creep behavior of electron beam directed energy deposited TC11 titanium alloy

The creep behavior of TC11 titanium alloy prepared by electron beam directed energy deposition (EB-DED) under various temperatures and stresses was investigated. The results indicated that TC11 prepared by EB-DED maintained excellent creep resistance in the temperature range from 550 °C to 600 °C, c...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2024-10, Vol.913, p.147020, Article 147020
Main Authors: Yao, Mengxin, Yao, Zhengjun, Yi, Chang, Moliar, Oleksandr, Soloviova, Tetiana, Trosnikova, Iryna, Yurkova, Alexandra, Loboda, Petro, Zhang, Shasha
Format: Article
Language:English
Subjects:
Creep behavior
Electron beam directed energy deposition
TC11 titanium alloy
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Summary:The creep behavior of TC11 titanium alloy prepared by electron beam directed energy deposition (EB-DED) under various temperatures and stresses was investigated. The results indicated that TC11 prepared by EB-DED maintained excellent creep resistance in the temperature range from 550 °C to 600 °C, compared with the forged TC and TA series titanium alloys. The creep process accelerated with increasing temperature and stress, leading to elevated creep rates and shortened creep lifetimes. The improved creep resistance was related to the multiscale microstructures, i.e., the primary β columnar grains, the refined α lamellar microstructure and the solid solution strengthening effect of Si element predominantly existing in a nearly fully dissolved state.
ISSN:0921-5093
DOI:10.1016/j.msea.2024.147020