阻燃鈦合金Ti40的熱物理性能及力學性能

阻燃鈦合金Ti40的熱物理性能及力學性能Thermo-physical Properties and Mechanical Properties of Burn-resistant Titanium Alloy Ti40

作為一種功能性鈦合金，Ti40阻燃鈦合金的熱物理性能數(shù)據首次被報道。采用真空自耗電弧熔煉技術制備的Ti40合金鑄錠成分均勻，利用熱擠壓開坯+包套保護鍛造方法制備的板坯組織均勻。性能測試結果表明：Ti40合金的室溫抗拉強度為950 MPa級，且在500 ℃下具有良好的熱暴露性能、高溫蠕變性能和高溫持久性能。在室溫到600 ℃范圍內，合金的楊氏模量和剪切模量隨著溫度的升高呈線性下降，泊松比隨著溫度升高而緩慢增加；線性熱膨脹曲線隨著溫度升高呈拋物線增加，平均線膨脹系數(shù)隨著溫度的升高呈線性增加。

As a functional material of burn-resistant titanium alloy, the physical properties of Ti40 alloy were first reported. The chemical compositions of Ti40 alloy ingots by VAR were uniform. The microstructures of Ti40 alloy slab manufactured by HEFF+WPF were uniform. The results show that the room temperature tensile strength of Ti40 alloy is 950 MPa degree. The properties of high temperature heat exposure, creep resistance and lasting time are good at 500 ℃. In the range from room temperature to 600 ℃, Young's modulus and shear modulus are decreased linearly with increasing the temperature, Poisson's ratio is increases slowly as the temperature rises, and linear thermal expansion coefficient and average linear expansion coefficient is increase as the temperature rises.

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