| MEASUREMENT OF WELD ZONE PROPERTIES OF LASER-WELDED TAILOR-WELDED BLANKS AND ITS APPLICATION TO DEEP DRAWING |
| Yong Chan Hur1, Daeyong Kim2, Byung Min Kim1, Chung Yun Kang1, Myoung-Gyu Lee3, Ji Hoon Kim1 |
1Pusan National University
2Korea Institute of Materials Science
3Seoul National University |
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| ABSTRACT |
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Weld zones in tailor welded blanks have different mechanical properties than the base metals and thus have significant effects on formability. In this work, flow stresses of weld zones in laser-welded dissimilar dual-phase steels were measured. Strains at the weld zones of notched specimens were measured using the digital image correlation method and the flow stress data were corrected considering the anisotropy. For validation, finite element simulations were performed for the cup drawing process by considering the measured weld zone properties, and the weld line movements were compared with the measurements. |
| Key Words:
Laser welding, Digital image correlation, Dual-phase steel, Flow stress, Formability |
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Corresponding Author.
Ji Hoon Kim , Email. 
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