Decomposition of the metastable beta titanium alloy Ti-15-3

Author(s):  
Y. L. Chen ◽  
S. Fujlshiro

Metastable beta titanium alloys have been known to have numerous advantages such as cold formability, high strength, good fracture resistance, deep hardenability, and cost effectiveness. Very high strength is obtainable by precipitation of the hexagonal alpha phase in a bcc beta matrix in these alloys. Precipitation hardening in the metastable beta alloys may also result from the formation of transition phases such as omega phase. Ti-15-3 (Ti-15V- 3Cr-3Al-3Sn) has been developed recently by TIMET and USAF for low cost sheet metal applications. The purpose of the present study was to examine the aging characteristics in this alloy.The composition of the as-received material is: 14.7 V, 3.14 Cr, 3.05 Al, 2.26 Sn, and 0.145 Fe. The beta transus temperature as determined by optical metallographic method was about 770°C. Specimen coupons were prepared from a mill-annealed 1.2 mm thick sheet, and solution treated at 827°C for 2 hr in argon, then water quenched. Aging was also done in argon at temperatures ranging from 316 to 616°C for various times.

2014 ◽  
Vol 788 ◽  
pp. 134-137 ◽  
Author(s):  
Pei Tong Ni ◽  
Li Peng Zhou ◽  
Bao Liang Bai ◽  
Ming Chen Han ◽  
Mei Sheng Zhu

Metastable beta titanium alloy Ti-5Mo-5V-8Cr-3Al, with high-strength, favorite ductility and outstanding capacity of cold forming and welding, has been found the applications in sheet metal component, pressure vessel, corrugated shell and cold heading rivet at the temperature lower than 350°C. In the present paper, the effect of cold machining deformation rate and heat treatment process on the properties and microstructures of Ti-5Mo-5V-8Cr-3Al strip were investigated. The results revealed that excellent comprehensive mechanical properties could be achieved with the alloy by reasonable cold machining process and with solution treatment at 800°C followed by gas quenching. Upon a solution and aging treatment at 480°C, the alloy performed favorite plasticity and high ultimate tensile strength of 1250MPa.


Alloy Digest ◽  
2004 ◽  
Vol 53 (7) ◽  

Abstract Allvac 38-644 is a metastable beta titanium alloy known for its ductility in the solution treated condition and its high strength and ductility in the solution treated and aged condition. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, machining, and joining. Filing Code: TI-134. Producer or source: Allvac Metals Company.


Alloy Digest ◽  
1992 ◽  
Vol 41 (11) ◽  

Abstract TIMETAL 15-3 is a metastable beta titanium alloy that offers substantial weight reductions over other engineering materials. In the solution treated condition, it has excellent cold formability; in the aged condition, it has high strength. TIMETAL 15-3 is usually acceptable for use at temperatures up to 550 F. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on forming and heat treating. Filing Code: Ti-101. Producer or source: Titanium Metals Corporation (Timet).


Alloy Digest ◽  
2021 ◽  
Vol 70 (7) ◽  

Abstract CarTech Ti 15V-3Cr-3Sn-3Al (UNS R58153) is a metastable beta titanium alloy that offers substantial weight reduction in comparison with other engineering materials. If used in the solution heat treated condition, the alloy has excellent cold formability. In the aged condition, the alloy has high strength. It is acceptable for use up to 230 °C (550 °F). This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: Ti-180. Producer or source: Carpenter Technology Corporation.


Wear ◽  
2021 ◽  
pp. 203998
Author(s):  
Alex Graves ◽  
Susanne Norgren ◽  
Wei Wan ◽  
Sandeep Singh ◽  
Mikael Kritikos ◽  
...  

Alloy Digest ◽  
1973 ◽  
Vol 22 (5) ◽  

Abstract Ti-8Mo-8V-2Fe-3A1 is a metastable beta titanium alloy that can be age hardened to high-strength levels. Aging in the range of 800-1200 F partially transforms beta to alpha to produce the high strength. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. It also includes information on low and high temperature performance, and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ti-68. Producer or source: Titanium Metals Corporation of America.


Alloy Digest ◽  
1965 ◽  
Vol 14 (6) ◽  

Abstract Ti-6A1-6V-2Sn is an alpha-beta titanium alloy capable of heat treatment to very high strength levels. It provides effective weight saving when extruded shapes, thick plate sections, or forged parts are required for airborne assemblies operating at long times to temperatures up to 700 F. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Ti-44. Producer or source: Titanium Metals Corporation of America.


2010 ◽  
Vol 146-147 ◽  
pp. 1815-1820 ◽  
Author(s):  
Peng Ge

Ti-3.5Al-5Mo-4V-2Cr-1Fe-2Zr-2Sn titanium alloy is a new high strength metastable beta titanium alloy which was designed according to the principle of ‘near critical molybdenum equivalent and multicomponent strengthening’. The effect of solution treatment on aging responses of the new alloy including room temperature tensile properties and microstructures were investigated. There is a tendency that the tensile strength is increasing with the increase of solution temperatures on the same aging conditions and water quenching from solution temperatures can produce higher age hardening effect than that treated by air cooling. The results revealed that the specific aging response of the new alloy is from the high driving force of phase precipitation together with the effect of excess vacancies.


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