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Date of Publication:2022-10-09

Journal:中国有色金属学报

Volume:28

Issue:11

Page Number:2249-2256

ISSN No.:1004-0609

Abstract:Comparing with microstructure and mechanical property of TC4 alloy bar after different procedures. The results show that the recrystallization microstructure of the bar is found to be affected significantly by high temperature annealing, while the mechanical property is affected by hyperbola straightening and low temperature annealing. The recrystallization degree of hot drawing bar is sufficient after being annealed at 730-750 for 2 h. Optical microstructure of straightening bar does not change significantly, but the Vickers hardness decreases evidently after being annealed at 580-700 for 2 h. When the high and low temperature annealing are performed at 730-750 and 580, respectively, the mechanical property of the bar is suitable for the medical TC4 alloy based on the microstructure control. In addition, the necking size of U-shaped nail processed from the bar is desirable to be lower than 0.05 mm. © 2018, Science Press. All right reserved.

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