Time-Dependent Springback
SCIE
SCOPUS
- Title
- Time-Dependent Springback
- Authors
- H. Lim; M. G. Lee; J. H. Sung; R. H. Wagoner
- Date Issued
- 2008-04
- Publisher
- ESAFORM
- Abstract
- Draw-bend tests performed some years ago on four aluminum alloys (2008-T4, 5182-O, 6022T4, and 6111-T4) revealed that specimens can continue to change shape for long periods, up to 15 months, following forming and unloading [1]. Contemporaneous tests of autobody steels (DQSK, AKDQ and HSLA steels) tested under identical conditions showed no such time-dependent springback over a 7 year period [2]. Current, preliminary results for a few advanced high strength steels (DP600, DP800, DP980 and TRIP780) revealed time-dependent springback at room temperature; the sign of the springback reversing for certain combinations of process conditions. Time-dependent behavior of four advanced high strength steel was measured and creep-simulated for various test conditions. Comparisons show qualitative agreement, but the simulations over-predict the magnitude of the effect
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/38613
- DOI
- 10.1007/s12289-008-0015-2
- ISSN
- 1960-6206
- Article Type
- Article
- Citation
- INTERNATIONAL JOURNAL OF MATERIAL FORMING, vol. 1, page. 157 - 160, 2008-04
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