Steel sheet metals are widely used in different industries due to their high strength, good weldability, availability, moderate cost, and the ability to form to complex 3D parts. The study of the formability of sheet metals is often done by means of Forming Limit Diagram (FLD) which presents the major and minor engineering strain thresholds under different deformation states. In this article, the formability parameters of three different steel sheet metals with the same thickness have been determined by uniaxial tension test and their FLDs have been produced by Hecker method: RRSt14O3, Zinc coated IF (Interstitial Free) steel and uncoated IF steel. Also the materials’ formability during the stamping process of a car door inner panel has been investigated as a case study to substitute the original design of raw material, coated IF steel, with a cheaper alternative. Among the tested materials to form the part, the uniaxial tension results showed that the formability parameters of uncoated IF steel was higher than the coated IF steel and the parameters of RRSt14O3 sheet metal was the lowest. The FLD of coated IF steel sheet was the highest (best formability). Differences among the formability parameters in uniaxial tension, the FLDs, and the stamping behavior of the part with different steel sheet metals have been explained by their surface roughnesses and the friction coefficients that affect the material flow during the FLD test as well as the stamping process.
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ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
August 15–18, 2010
Montreal, Quebec, Canada
Conference Sponsors:
- Design Engineering Division and Computers in Engineering Division
ISBN:
978-0-7918-4414-4
PROCEEDINGS PAPER
A Study on the Formability of IF and Plain Carbon Mild Steels Available to Purchase
Mohamadreza Nourani,
Mohamadreza Nourani
Supplying Automotive Parts Company, Tehran, Iran
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Hossein Aliverdilu,
Hossein Aliverdilu
K. N. Toosi University of Technology, Tehran, Iran
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Hossein Monajati Zadeh,
Hossein Monajati Zadeh
Islamic Azad University at Najafabad, Najafabad, Isfahan, Iran
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Hamid Khorsand,
Hamid Khorsand
K. N. Toosi University of Technology, Tehran, Iran
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Ali Shokuhfar,
Ali Shokuhfar
K. N. Toosi University of Technology, Tehran, Iran
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Abbas S. Milani
Abbas S. Milani
University of British Columbia-Okanagan, Kelowna, BC, Canada
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Mohamadreza Nourani
Supplying Automotive Parts Company, Tehran, Iran
Hossein Aliverdilu
K. N. Toosi University of Technology, Tehran, Iran
Hossein Monajati Zadeh
Islamic Azad University at Najafabad, Najafabad, Isfahan, Iran
Hamid Khorsand
K. N. Toosi University of Technology, Tehran, Iran
Ali Shokuhfar
K. N. Toosi University of Technology, Tehran, Iran
Abbas S. Milani
University of British Columbia-Okanagan, Kelowna, BC, Canada
Paper No:
DETC2010-29173, pp. 333-339; 7 pages
Published Online:
March 8, 2011
Citation
Nourani, M, Aliverdilu, H, Monajati Zadeh, H, Khorsand, H, Shokuhfar, A, & Milani, AS. "A Study on the Formability of IF and Plain Carbon Mild Steels." Proceedings of the ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 6: 15th Design for Manufacturing and the Lifecycle Conference; 7th Symposium on International Design and Design Education. Montreal, Quebec, Canada. August 15–18, 2010. pp. 333-339. ASME. https://doi.org/10.1115/DETC2010-29173
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