Rapid dynamic transformation in the initial stage of hot deformation of a near alpha titanium alloy

Abstract TIMETAL 829 is a Ti-5.5Al-3.5Sn-3Zr-1Nb-0.25Mo-0.3Si near-alpha titanium alloy that is weldable and has high strength and is a creep resistant high temperature alloy. The major application is as gas turbine engine components. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness, creep, and fatigue. It also includes information on forming and heat treating. Filing Code: TI-118. Producer or source: Timet.

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Ti-3Al-2.5V

Alloy Digest ◽

10.31399/asm.ad.ti0095 ◽

1990 ◽

Vol 39 (4) ◽

Keyword(s):

Corrosion Resistance ◽

Titanium Alloy ◽

Physical Properties ◽

Tensile Properties ◽

Elevated Temperatures ◽

Heat Treating ◽

Commercially Pure ◽

Pure Grade ◽

Alpha Titanium ◽

Cold Worked

Abstract Ti-3A1-2.5V is a near-alpha titanium alloy offering 20-50% higher tensile properties than the strongest commercially pure grade of titanium at both room and elevated temperatures. Normally furnished in the annealed, or in the cold-worked stress-relieved condition, Ti-3A1-2.5V titanium alloy features excellent cold formability and good notch tensile properties, as well as corrosion resistance in many environments. 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, machining, and joining. Filing Code: Ti-95. Producer or source: Titanium alloy mills.

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Hot Deformation Behavior and Processing Maps of a New Ti-6Al-2Nb-2Zr-0.4B Titanium Alloy

Materials ◽

10.3390/ma14092456 ◽

2021 ◽

Vol 14 (9) ◽

pp. 2456

Author(s):

Zhijun Yang ◽

Weixin Yu ◽

Shaoting Lang ◽

Junyi Wei ◽

Guanglong Wang ◽

...

Keyword(s):

Titanium Alloy ◽

Flow Stress ◽

Constitutive Equation ◽

Deformation Mechanism ◽

Power Dissipation ◽

Hot Deformation ◽

Dissipation Rate ◽

Dynamic Recovery ◽

Processing Maps ◽

Temperature Range

The hot deformation behaviors of a new Ti-6Al-2Nb-2Zr-0.4B titanium alloy in the strain rate range 0.01–10.0 s−1 and temperature range 850–1060 °C were evaluated using hot compressing testing on a Gleeble-3800 simulator at 60% of deformation degree. The flow stress characteristics of the alloy were analyzed according to the true stress–strain curve. The constitutive equation was established to describe the change of deformation temperature and flow stress with strain rate. The thermal deformation activation energy Q was equal to 551.7 kJ/mol. The constitutive equation was ε ˙=e54.41[sinh (0.01σ)]2.35exp(−551.7/RT). On the basis of the dynamic material model and the instability criterion, the processing maps were established at the strain of 0.5. The experimental results revealed that in the (α + β) region deformation, the power dissipation rate reached 53% in the range of 0.01–0.05 s−1 and temperature range of 920–980 °C, and the deformation mechanism was dynamic recovery. In the β region deformation, the power dissipation rate reached 48% in the range of 0.01–0.1 s−1 and temperature range of 1010–1040 °C, and the deformation mechanism involved dynamic recovery and dynamic recrystallization.

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Effects of hydrogen as a solid solution element on the deformation behavior of a near-alpha titanium alloy

Materials Science and Engineering A ◽

10.1016/j.msea.2021.141269 ◽

2021 ◽

pp. 141269

Author(s):

Yali Xu ◽

Binbin Zhang

Keyword(s):

Solid Solution ◽

Titanium Alloy ◽

Deformation Behavior ◽

Alpha Titanium ◽

Solution Element

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Experimental investigation of surface roughness in high-speed micro end milling of near alpha titanium alloy

International Journal of Precision Technology ◽

10.1504/ijptech.2017.090764 ◽

2017 ◽

Vol 7 (2/3/4) ◽

pp. 87

Author(s):

Chakradhar Bandapalli ◽

Bharatkumar Mohanbhai Sutaria ◽

Dhananjay Vishnuprasad Bhatt

Keyword(s):

Surface Roughness ◽

Experimental Investigation ◽

Titanium Alloy ◽

High Speed ◽

End Milling ◽

Micro End Milling ◽

Alpha Titanium

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Analysis of Hot Deformation Dynamics of TC18 Titanium Alloy

Materials Science Forum ◽

10.4028/www.scientific.net/msf.747-748.878 ◽

2013 ◽

Vol 747-748 ◽

pp. 878-884 ◽

Cited By ~ 1

Author(s):

Qing Rui Wang ◽

Ai Xue Sha ◽

Xing Wu Li ◽

Li Jun Huang

Keyword(s):

Titanium Alloy ◽

Phase Transformation ◽

Flow Stress ◽

Strain Rate ◽

Hot Deformation ◽

Deformation Temperature ◽

Relationship Model ◽

Deformation Dynamics ◽

Deformation Mechanics ◽

Versus Strain

The effect of strain rate and deformation temperature on flow stress of TC18 titanium alloy was studied through heat simulating tests in 760~960 with temperature interval and the strain rate interval in 0.01~10s-1. Relationship model of flow stress versus strain was established and hot deformation mechanics of TC18 titanium alloy was analyzed. The results show that the flow stress reduces obviously as the deformation temperature increases or the strain rate decreases. Dynamic recovery occurs at high strain rate above phase transformation point, while dynamic recrystallization occurs at low strain rate as well as at the temperature below phase transformation point.

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