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High-Temperature Formability and Friction Regulation Mechanism of TA17 Titanium Alloy with Typical Microstructures.

Bin Yan¹, Guocheng Zhang¹, Xiaoli Liu^2,3

¹School of Mechanical and Aviation Manufacturing Engineering, Anyang Institute of Technology, Anyang 455000, China.

Materials (Basel, Switzerland)

|June 12, 2026

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Optimizing TA17 titanium alloy hot forming requires an equiaxed microstructure and low friction. Controlling friction below 0.15 with lubricants enhances formability for aerospace components.

Area of Science:

Materials Science
Mechanical Engineering
Metallurgy

Background:

Limited research quantifies the impact of microstructure on TA17 titanium alloy's high-temperature formability.
The temperature-dependent friction coefficient and its effect on forming limits for TA17 are not well understood.
Few studies integrate both microstructure and friction effects on titanium alloy high-temperature formability.

Purpose of the Study:

To investigate the influence of initial microstructure and friction coefficient on TA17 titanium alloy's high-temperature formability.
To optimize hot forming processes for TA17 titanium alloy through theoretical and experimental data.
To provide insights into controlling microstructure and friction for improved formability.

Main Methods:

Keywords:

TA17 formability friction microstructures

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Preparation of three distinct microstructures via annealing processes.

High-temperature tensile tests and friction-wear tests.

Finite element (FE) simulation combined with experimental data.

Main Results:

Equiaxed microstructure annealed at 850 °C for 2 h showed superior high-temperature plasticity at 900 °C and 0.01 s^-1 strain rate.
High-temperature friction coefficient decreased from 0.56 at 650 °C to 0.19 at 800 °C, stabilizing below 0.2 between 800-900 °C.
Increased friction coefficient (0.05 to 0.2) reduced limit principal strain and punch stroke in deep-drawing.

Conclusions:

Fine equiaxed microstructure and low friction coefficient significantly enhance TA17 titanium alloy's high-temperature formability.
Recommends using equiaxed microstructure TA17 alloy for industrial hot forming.
Suggests controlling friction below 0.15 using lubricants to improve forming quality of complex aerospace parts.