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Metals 2019, 9(3), 272; https://doi.org/10.3390/met9030272

Evaluation of the Formability and Dimensional Accuracy Improvement of Ti6Al4V in Warm SPIF Processes

1
Industrial Engineering School of Albacete, University of Castilla-La Mancha, 02071 Albacete, Spain
2
Regional Development Institute, Materials Science and Engineering, University of Castilla La Mancha, 02071 Albacete, Spain
*
Author to whom correspondence should be addressed.
Received: 1 February 2019 / Revised: 20 February 2019 / Accepted: 21 February 2019 / Published: 26 February 2019
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Abstract

Single Point Incremental Forming (SPIF) has great potential as it can be easily implemented and the forming process does not require the use of dies. However, its application to high performance alloys such as Ti6Al4V has not been resolved due to its characteristic low formability. In the literature, studies on the warm SPIF process applied to this alloy report improved formability. However, in some of these studies the procedures used are complex and in others the surface finishes obtained are unsatisfactory. The present study proposes a methodology consisting of a simple heating device which permits working at moderate temperatures and quantifies the benefit of the temperature on the alloy formability, the forces acting during the process, and finally the dimensional precision of the parts produced. Working temperatures in the range of 300–400 °C significantly reduce forces, increase formability of the alloy, and substantially reduce springback. However, the springback values suggest the need for dimensional compensation at the design stage of products. View Full-Text
Keywords: warm SPIF; Ti6Al4V; formability; springback warm SPIF; Ti6Al4V; formability; springback
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Naranjo, J.A.; Miguel, V.; Martínez, A.; Coello, J.; Manjabacas, M.C. Evaluation of the Formability and Dimensional Accuracy Improvement of Ti6Al4V in Warm SPIF Processes. Metals 2019, 9, 272.

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