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Mechanical properties and microstructure of heterogeneous commercial pure titanium prepared by rotary swaging and annealing.
- Source :
-
Journal of Materials Science . Jun2024, Vol. 59 Issue 22, p9645-9656. 12p. - Publication Year :
- 2024
-
Abstract
- The industrial applications of commercial pure titanium (CP-Ti) are significantly limited due to the strength-ductility trade-off in metallic materials. The strategy of heterostructured materials has been proposed to design microstructures for desired strength and ductility. To improve the mechanical properties of CP-Ti, a heterostructured rod, consisting of ultrafine fibrous grains and recrystallized grains, was produced by rotary swaging and subsequent annealing. The heterostructured Ti exhibits a high tensile strength of 636 MPa, simultaneously sustaining a high ductility of 11.9%, its tensile toughness is three times that of the swaged sample. The superior mechanical properties are attributed to the significant hetero-deformation induced (HDI) hardening in heterostructured Ti. It is found that the HDI hardening is induced by the interactions between geometrically necessary dislocations (GNDs) and hetero-interfaces. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00222461
- Volume :
- 59
- Issue :
- 22
- Database :
- Academic Search Index
- Journal :
- Journal of Materials Science
- Publication Type :
- Academic Journal
- Accession number :
- 177777000
- Full Text :
- https://doi.org/10.1007/s10853-023-09073-3