Abstract
To investigate the mechanistic influence of the deviation ratio and heating temperature on the hot shear spinning of TA15 alloy, the geometric precision and microstructure evolution of the hot-spun parts were experimentally investigated under different conditions. The results show that diametrical shrinkage occurs under a negative deviation ratio, and a sudden decrease in heating temperature creates a sharp increase in the shrinkage. A pronounced diametrical enlargement increases from the bottom location to the open end of the workpiece under a positive deviation ratio with a gradual decrease in heating temperature. The hot shear spinning process can lead to a non-uniform microstructure that results from the non-uniform deformation along the thickness direction. The distortion degree of the fiber microstructure formed near the outer surface increases with the decrease in the deviation ratio. A deviation ratio near zero and heating to a temperature within the desired range are beneficial conditions for obtaining spun parts with satisfactory geometric precision and a uniform microstructure.
Original language | English |
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Pages (from-to) | 1617-1627 |
Number of pages | 11 |
Journal | Transactions of Nonferrous Metals Society of China (English Edition) |
Volume | 23 |
Issue number | 6 |
DOIs | |
State | Published - Jun 2013 |
Keywords
- geometric precision
- hot shear spinning
- microstructure
- titanium alloys