Mechanical Properties of Cold-worked and High-Low Temperature Duplex-aged Ti-15V-3Cr-3Sn-3Al Alloy

Mechanical Properties of Cold-worked and High-Low Temperature Duplex-aged Ti-15V-3Cr-3Sn-3Al Alloy

Mechanical properties were studied by tensile test of a Ti-15V-3Cr-3Sn-3Al alloy obtained by duplex-aging after cold-swaging, i.e. aging at high temperatures followed by re-aging at a lower temperature. Combinations of short-time aging at 823, 873 and 923 K and re-aging at 673 K have greatly improve...

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Veröffentlicht in:ISIJ International 1991/08/15, Vol.31(8), pp.856-862
Hauptverfasser: Niwa, Naotake, Arai, Akira, Takatori, Hideo, Ito, Kunio
Format: Artikel
Sprache:eng
Schlagworte:
aging
beta titanium alloy
cold-working
duplex-aging
mechanical properties
Ti-15V-3Cr-3Sn-3Al
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Zusammenfassung:Mechanical properties were studied by tensile test of a Ti-15V-3Cr-3Sn-3Al alloy obtained by duplex-aging after cold-swaging, i.e. aging at high temperatures followed by re-aging at a lower temperature. Combinations of short-time aging at 823, 873 and 923 K and re-aging at 673 K have greatly improved the strength-ductility balance of this alloy, realizing high strength of about 1.8 GPa with tensile elongation of 5%. This duplex-aging process further diminishes the influence of the amount of reduction by cold-swaging on the mechanical properties after aging.
ISSN:0915-1559
1347-5460
DOI:10.2355/isijinternational.31.856