Development of near β titanium alloy with high strength and superplastic properties

Development of near β titanium alloy with high strength and superplastic properties

Ultrafine-grained (UFG) structure with an average element size of about 0.25 µm was obtained in a near β titanium alloy under severe plastic deformation by abc pressing. It is shown that the formation of such structure greatly increases the ultimate strength of the alloy compared to its coarse-grain...

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Hauptverfasser: Naydenkin, E. V., Ratochka, I. V., Mishin, I. P., Lykova, O. N.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Elongation
High strength alloys
Plastic deformation
Superplasticity
Titanium alloys
Titanium base alloys
Ultimate tensile strength
Ultrafines
Yield strength
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Zusammenfassung:Ultrafine-grained (UFG) structure with an average element size of about 0.25 µm was obtained in a near β titanium alloy under severe plastic deformation by abc pressing. It is shown that the formation of such structure greatly increases the ultimate strength of the alloy compared to its coarse-grained state (up to 1610 MPa). In addition, the UFG alloy features improved superplastic characteristics under tension at temperatures of 973–1073 K: its elongation to failure exceeds 1300% and the flow stress decreases to several MPa.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.5013827