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Effect of thermal exposure on the microstructure and mechanical properties of Ti60 alloy
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Effect of thermal exposure on the microstructure and mechanical properties of Ti60 alloy
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Effect of thermal exposure on the microstructure and mechanical properties of Ti60 alloy
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Journal Article
Effect of thermal exposure on the microstructure and mechanical properties of Ti60 alloy
2024
Overview
The effect of thermal exposure on the microstructure and mechanical properties of Ti60 alloy was investigated in the present study. Meanwhile, the fatigue fracture microscopic appearance characteristics at elevated temperature were analyzed compared, providing the basis to further improve the performance of the series of high temperature titanium alloy. The results show that the yield strength and tensile strength were basically stable under long-term thermal exposure below 600°C, while the elongation decreased with the increase of exposure temperature. Thermal exposure below 800°C did not change the microstructure type of Ti60 alloy, but at higher temperature local β coursing occurred at the grain boundary. When the alloy was exposed above 600°C, Si was obviously concentrated in the grain boundary region, and the maximum concentration was up to 2.5%. With the increase of thermal exposure temperature, the characteristics of high-temperature fatigue fracture of Ti60 alloy change from trans-granular toughness to intergranular brittleness.
Publisher
IOP Publishing
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