Effects of the cross-wedge rolling parameters on the formability of Ti–6Al–4V alloy

Effects of the cross-wedge rolling parameters on the formability of Ti–6Al–4V alloy Ti–6Al–4V alloy is an ideal material for gas turbine blades with high strength and low density. The application of the cross-wedge rolling (CWR) process for manufacturing Ti–6Al–4V alloy blade preforms has great innovative potential. In this study, isothermal hot compression tests with strain rates between 0.01 and 10 s−1 and deformation temperatures between 850 and 1050 °C were carried out. The constitutive equation was established and implemented into a 3D finite element (FE) model to analyze the formability of the CWR of Ti–6Al–4V alloy. Furthermore, CWR experiments were developed to verify the dependability of the FE simulation results and to investigate the influence of the process parameters on the formability of Ti–6Al–4V. The comprehensive results of the FE simulation and CWR experiments show that both the tool parameters and rolling temperature significantly affect the formability of the Ti–6Al–4V alloy. When the forming angle was 30° or 35°, the stretching angle was less than 7°, the area reduction was less than 72.4%, and the rolling temperature was 950 °C, The surface quality during the CWR process can be significantly improved. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The International Journal of Advanced Manufacturing Technology Springer Journals

Effects of the cross-wedge rolling parameters on the formability of Ti–6Al–4V alloy

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Publisher
Springer London
Copyright
Copyright © 2017 by Springer-Verlag London
Subject
Engineering; Industrial and Production Engineering; Media Management; Mechanical Engineering; Computer-Aided Engineering (CAD, CAE) and Design
ISSN
0268-3768
eISSN
1433-3015
D.O.I.
10.1007/s00170-017-0263-8
Publisher site
See Article on Publisher Site

Abstract

Ti–6Al–4V alloy is an ideal material for gas turbine blades with high strength and low density. The application of the cross-wedge rolling (CWR) process for manufacturing Ti–6Al–4V alloy blade preforms has great innovative potential. In this study, isothermal hot compression tests with strain rates between 0.01 and 10 s−1 and deformation temperatures between 850 and 1050 °C were carried out. The constitutive equation was established and implemented into a 3D finite element (FE) model to analyze the formability of the CWR of Ti–6Al–4V alloy. Furthermore, CWR experiments were developed to verify the dependability of the FE simulation results and to investigate the influence of the process parameters on the formability of Ti–6Al–4V. The comprehensive results of the FE simulation and CWR experiments show that both the tool parameters and rolling temperature significantly affect the formability of the Ti–6Al–4V alloy. When the forming angle was 30° or 35°, the stretching angle was less than 7°, the area reduction was less than 72.4%, and the rolling temperature was 950 °C, The surface quality during the CWR process can be significantly improved.

Journal

The International Journal of Advanced Manufacturing TechnologySpringer Journals

Published: Mar 30, 2017

References

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