【摘 要】
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The microstructure,martensitic transformation and mechanical/functional properties of Ti-Ta-Hf alloys with various thermo-mechanical treatments were investigated.The results reveal that the hot-rolling could refine the grain size and introduce a certain n
【机 构】
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College of Mechanical and Electrical Engineering,Northeast Forestry University Harbin,150001,China;C
论文部分内容阅读
The microstructure,martensitic transformation and mechanical/functional properties of Ti-Ta-Hf alloys with various thermo-mechanical treatments were investigated.The results reveal that the hot-rolling could refine the grain size and introduce a certain number of defects,resulting in the disappearance of martensitic transformation.The as-casted and solution treated Ti-Ta-Hf alloys were composed of α\" martensite phase and smaller volume of β phase.In contrast,the grain size of solution treated Ti-Ta-Hf alloy was slightly less than that of as-casted Ti-Ta-Hf alloy.This should be responsible to the higher yield stress and superior strain recovery characteristics for solution treated Ti-Ta-Hf alloy.The yield stress for the dislocation slip and the maximum recoverable strain of solution treated Ti-Ta-Hf alloy were 723 MPa and 5.06％,respectively.
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