|
Vol.50, No.7, 503 ~ 510, 2012
|
| Title |
| 6xxx Series Al Alloy Sheets with High Formability Produced by Twin-roll Strip Casting and Asymmetric Rolling |
| 김홍규 Hong Kyu Kim , 조재형 Jae Hyung Cho , 김형욱 Hyoung Wook Kim , 이재철 Jae Chul Lee |
|
|
|
| Abstract |
| We report on the feasibility of producing 6xxx series Al alloy sheets using a combination of twinroll strip casting and asymmetric rolling. The Al alloy sheets produced in this study exhibited an excellent formability (r=1.2, ㅿr=0.17) and mechanical properties (σTS~260 MPa, ε>30%), which cannot be feasibly obtained via the conventional technique based on ingot casting and conventional rolling. The enhanced formability as evaluated in terms of r and ㅿr was clarified by examining the evolution of textures associated with strip casting and subsequent thermo-mechanical treatments. The evaluation of the formability leads us to conclude that the combined technique based on strip casting and asymmetric rolling is a feasible process for enhancing the formability of Al alloy sheets to a level beyond which the conventional technique can reach. |
|
|
| Key Words |
| Al alloy, asymmetric rolling, strip casting, mechanical properties, textures, Al-Mg-Si |
|
|
 |
|
