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- Title
Optimizing the hot-forging process parameters for connecting rods made of PM titanium alloy.
- Authors
Qiu, J.; Liu, Y.; Liu, B.; Wang, B.; Ryba, Earle; Tang, H.
- Abstract
In order to optimize the processing parameters of a new low-cost titanium alloy connecting rod made of powder forging, the deformation behavior of an α + β type Ti-1.5Fe-2.25Mo (wt%) alloy produced by elemental powder metallurgy (PM) route was studied using isothermal compression tests. The constitutive equations and a processing map were established to characterize the flow behavior and predict the optimum deformation parameters. The calculated apparent activation energy was 257.73 kJ/mol for deformation in the α + β phase region and 378.01 kJ/mol in the β phase region. Two deformation mechanism domains were found: α + β → β phase transformation and dynamic recrystallization. The results show that the optimum deformation parameters for the present alloy are (700-800 °C, 10-1 s) and (800-900 °C, 10-10 s). Based on these results, a finite element method (FEM) simulation of the hot-forming of a connecting rod was conducted, and the simulated results have been successfully used in an industrial forging of the connecting rod.
- Subjects
FORGING; TITANIUM alloys; POWDER metallurgy; DEFORMATIONS (Mechanics); RECRYSTALLIZATION (Metallurgy); MICROSTRUCTURE; STRAINS &; stresses (Mechanics); IRON-molybdenum alloys
- Publication
Journal of Materials Science, 2012, Vol 47, Issue 8, p3837
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-011-6239-4