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Tensile and Micro Stretch Bending Experiments for Studying Stainless Steel 304 Foil for Micro Sheet Forming

[+] Author Affiliations
Chi-Han Chen, Rong-Shean Lee

National Cheng Kung University, Tainan, Taiwan

Jenn-Terng Gau

Northern Illinois University, DeKalb, IL

Paper No. MSEC_ICMP2008-72273, pp. 457-463; 7 pages
doi:10.1115/MSEC_ICMP2008-72273
From:
  • ASME 2008 International Manufacturing Science and Engineering Conference collocated with the 3rd JSME/ASME International Conference on Materials and Processing
  • ASME 2008 International Manufacturing Science and Engineering Conference, Volume 2
  • Evanston, Illinois, USA, October 7–10, 2008
  • Conference Sponsors: Manufacturing Engineering Division
  • ISBN: 978-0-7918-4852-4 | eISBN: 978-0-7918-3836-6
  • Copyright © 2008 by ASME

abstract

Tensile test and a micro stretch bending test were conducted to study the behavior of the stainless steel 304 foils for micro sheet forming. In this study, 4 different thicknesses stainless steel 304 foils were used as specimens while 5 micro deep draw dies were used for micro stretch bending experiments. By observing the tensile test results, it can be found that the stainless steel 304 foils with T/D (thickness/average grain diameter: the numbers of grains throughout the metal thickness) <10 has less formability than those with T/D>10. By observing the results of the micro stretch bending experiments, it can be concluded that the stainless steel foils with T/D>10 have less springback amount and smaller springback deviation in comparison with those with T/D<10. In order to have a better formability and less springback, it is recommend having the stainless steel 304 foils with T/D>10 for micro sheet forming application.

Copyright © 2008 by ASME
Topics: Stainless steel

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