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Improving mechanical property of Ti55531 alloy by yttrium dopant.
- Source :
-
Journal of Alloys & Compounds . Dec2022, Vol. 928, pN.PAG-N.PAG. 1p. - Publication Year :
- 2022
-
Abstract
- Obtaining higher mechanical properties, particularly the coexistence of strength and ductility, is always an important issue for high-strength and high-ductile metastable β titanium alloy, such as Ti55531. Rare earth element doping to gain reticulate structure is a possible way to break the strength-ductility trade-off considering the excellent capability of yttrium in improving the properties of titanium alloys and limiting grain growth. In this study, a new strategy was devised for the preparation of Ti55531 alloys with a reticulate structure by introducing yttrium and a tailored spark plasma sintering (SPS) procedure. Compared to the homogeneous structure, the strength of the material with a reticulate structure is prominently improved at the little expense of loss in ductility. Furthermore, the addition of yttrium can significantly increase the precipitation of α phase by affecting the local element concentration. It is hoped that this study can provide important inspiration for improving the mechanical properties of powder metallurgy fabricated titanium alloys. • Titanium alloys with reticulate structure prepared by doping yttrium and SPS technology. • The Ti55531 alloy with reticulate structure has good strength-ductility matching. • Yttrium affects the microstructure evolution and crack propagation path of Ti55531 alloy. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09258388
- Volume :
- 928
- Database :
- Academic Search Index
- Journal :
- Journal of Alloys & Compounds
- Publication Type :
- Academic Journal
- Accession number :
- 159475925
- Full Text :
- https://doi.org/10.1016/j.jallcom.2022.167122