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Title: High Velocity Forming of Magnesium and Titanium Sheets

Abstract

Cold forming of magnesium and titanium is difficult due to their hexagonal crystal structure and limited number of available slip systems. However, high velocity deformation can be quite effective in increasing the forming limits. In this study, electromagnetic forming (EMF) of thin AZ31B-O magnesium and CP grade 1 titanium sheets were compared with normal deep drawing. Same dies were used in both forming processes. Finite element (FE) simulations were carried out to improve the EMF process parameters. Constitutive data was determined using Split Hopkinson Pressure Bar tests (SHPB). To study formability, sample sheets were electromagnetically launched to the female die, using a flat spiral electromagnetic coil and aluminum driver sheets. Deep drawing tests were made by a laboratory press-machine.Results show that high velocity forming processes increase the formability of Magnesium and Titanium sheets although process parameters have to be carefully tuned to obtain good results.

Authors:
;  [1]; ;  [2]
  1. Technical Research Centre of Finland, P.O. Box 1000, 02044 VTT (Finland)
  2. Helsinki University of Technology, P.O. Box 6200, 02015 HUT (Finland)
Publication Date:
OSTI Identifier:
21057003
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 907; Journal Issue: 1; Conference: 10. ESAFORM conference on material forming, Zaragoza (Spain), 18-20 Apr 2007; Other Information: DOI: 10.1063/1.2729504; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM; COMPUTERIZED SIMULATION; CRYSTAL STRUCTURE; DEFORMATION; DRAWING; ELECTRODEPOSITION; ELECTROMOTIVE FORCE; FINITE ELEMENT METHOD; MAGNESIUM; MAGNESIUM ALLOYS; MAGNETIC FORMING; PRESSES; TITANIUM; TITANIUM ALLOYS

Citation Formats

Revuelta, A., Larkiola, J., Korhonen, A. S., and Kanervo, K. High Velocity Forming of Magnesium and Titanium Sheets. United States: N. p., 2007. Web. doi:10.1063/1.2729504.
Revuelta, A., Larkiola, J., Korhonen, A. S., & Kanervo, K. High Velocity Forming of Magnesium and Titanium Sheets. United States. doi:10.1063/1.2729504.
Revuelta, A., Larkiola, J., Korhonen, A. S., and Kanervo, K. Sat . "High Velocity Forming of Magnesium and Titanium Sheets". United States. doi:10.1063/1.2729504.
@article{osti_21057003,
title = {High Velocity Forming of Magnesium and Titanium Sheets},
author = {Revuelta, A. and Larkiola, J. and Korhonen, A. S. and Kanervo, K.},
abstractNote = {Cold forming of magnesium and titanium is difficult due to their hexagonal crystal structure and limited number of available slip systems. However, high velocity deformation can be quite effective in increasing the forming limits. In this study, electromagnetic forming (EMF) of thin AZ31B-O magnesium and CP grade 1 titanium sheets were compared with normal deep drawing. Same dies were used in both forming processes. Finite element (FE) simulations were carried out to improve the EMF process parameters. Constitutive data was determined using Split Hopkinson Pressure Bar tests (SHPB). To study formability, sample sheets were electromagnetically launched to the female die, using a flat spiral electromagnetic coil and aluminum driver sheets. Deep drawing tests were made by a laboratory press-machine.Results show that high velocity forming processes increase the formability of Magnesium and Titanium sheets although process parameters have to be carefully tuned to obtain good results.},
doi = {10.1063/1.2729504},
journal = {AIP Conference Proceedings},
number = 1,
volume = 907,
place = {United States},
year = {Sat Apr 07 00:00:00 EDT 2007},
month = {Sat Apr 07 00:00:00 EDT 2007}
}