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http://dx.doi.org/10.5228/KSPP.2008.17.7.473

Forming Limits Diagram of AZ31 Alloy Sheet with the Deformation Mode  

Jung, J.H. (한국기계연구원 부설 재료연구소 소성응용그룹)
Lee, Y.S. (한국기계연구원 부설 재료연구소 소성응용그룹)
Kwon, Y.N. (한국기계연구원 부설 재료연구소 소성응용그룹)
Lee, J.H. (한국기계연구원 부설 재료연구소 소성응용그룹)
Publication Information
Transactions of Materials Processing / v.17, no.7, 2008 , pp. 473-480 More about this Journal
Abstract
Sheet metal forming of Mg alloy is usually performed at elevated temperature because of the low formability at room temperature. Therefore, strain rates affected with the forming temperature and speed must be considered as important factor about formability. Effects of process parameters such as various temperatures and forming speeds were investigated in circular cup deep drawing. From the experimental results, it is known that LDR (Limit Drawing Ratio) increase as the strain rate increase. On the contrary, the FLD (Forming Limit Diagram) shows lower value as faster strain rate. Therefore, anisotropy values are investigated according to the temperature and strain rates at each forming temperature. R-values also represent higher value as faster strain rate. It is known that the formability can be different with the deformation mode on warm forming of AZ31 alloy sheet.
Keywords
AZ31; Strain Rate; LDR; R-Value; Cup Drawing; FLD; Deformation Mode;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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