1、 Introduction to TA1 Titanium Alloy

TA1 titanium alloy is a pure titanium alloy with excellent mechanical properties and corrosion resistance. Due to its advantages of lightweight, high strength, high temperature resistance, corrosion resistance, etc., it is widely used in aerospace, chemical, medical and other fields. This article will provide a detailed analysis of the high-temperature performance and chemical composition of TA1 titanium alloy.

2、 Chemical composition of TA1 titanium alloy

The main chemical components of TA1 titanium alloy include titanium (Ti), oxygen (O), nitrogen (N), carbon (C), hydrogen (H), and iron (Fe). The specific ingredients are as follows:

Titanium (Ti): 99.6% or more

Oxygen (O): ≤ 0.15%

Nitrogen (N): ≤ 0.03%

Carbon (C): ≤ 0.10%

Hydrogen (H): ≤ 0.015%

Iron (Fe): ≤ 0.20%

The content of these components has a significant impact on the properties of TA1 titanium alloy. Especially the content of oxygen, nitrogen, carbon, and hydrogen needs to be strictly controlled to ensure the purity and performance of the material.

3、 Analysis of High Temperature Performance of TA1 Titanium Alloy

1. High temperature strength

Below 300 ℃, the tensile strength of TA1 titanium alloy remains stable, approximately 240-270 MPa.

As the temperature rises to 500 ℃, the tensile strength decreases significantly, reaching about 180 MPa.

When the temperature reaches 700 ℃, the tensile strength decreases to about 100 MPa.

2. High temperature creep

At 400 ℃, the creep rate of TA1 titanium alloy under a stress of 100 MPa is about 10 ^ -6/h.

When the temperature is raised to 500 ℃, the creep rate increases to 10 ^ -5/h.

At 600 ℃, the creep rate further increases to 10 ^ -4/h.

3. High temperature fatigue performance

At 300 ℃, the fatigue life of TA1 titanium alloy is approximately 10 ^ 6 cycles.

At 400 ℃, the fatigue life is reduced to about 10 ^ 5 cycles.

When the temperature reaches 500 ℃, the fatigue life is only about 10 ^ 4 cycles.

4. High temperature antioxidant performance

TA1 titanium alloy exhibits excellent oxidation resistance at 300 ℃, with a very low oxidation rate.

At 500 ℃, the oxidation rate significantly increases and the thickness of the oxide film formed on the surface increases.

Above 600 ℃, the oxidation rate rapidly increases, and special attention should be paid to the protection of the material surface.

4、 Typical Applications of TA1 Titanium Alloy

1. Aerospace

Due to its excellent high-temperature performance, TA1 titanium alloy is commonly used in the manufacture of aircraft engine blades and turbine components.

For example, in an operating environment of 400 ℃, engine blades require materials with high creep resistance and fatigue life, and TA1 titanium alloy can effectively meet this requirement.

2. Chemical equipment

The corrosion resistance of TA1 titanium alloy makes it widely used in the chemical industry, especially in chemical reactors and pipelines at high temperatures.

For example, in the chlor alkali industry, TA1 titanium alloy can resist the corrosion of high-temperature chlorine gas and sodium hydroxide, extending the service life of equipment.

3. Medical devices

The biocompatibility and high-temperature disinfection ability of TA1 titanium alloy make it an important material for medical devices.

Artificial joints, bone nails, etc. require disinfection treatment at high temperatures, and the performance of TA1 titanium alloy can meet these requirements.

5、 TA1 titanium alloy experimental data support

In an experiment, researchers tested the tensile strength of TA1 titanium alloy at different temperatures. The results showed that the tensile strengths at 25 ℃, 300 ℃, 500 ℃, and 700 ℃ were 270 MPa, 260 MPa, 180 MPa, and 100 MPa, respectively. These data indicate that temperature has a significant impact on the mechanical properties of TA1 titanium alloy.

In another creep experiment, the creep rates of TA1 titanium alloy at 400 ℃, 500 ℃, and 600 ℃ were 10 ^ -6/h, 10 ^ -5/h, and 10 ^ -4/h, respectively, further verifying the effect of high temperature on the creep properties of the material.