논문 : 쌍롤 박판주조법으로 제조된 Al-5.5Mg-0.02Ti합금의 미세조직 및 기계적 특성 = Microstructure and Mechanical Properties of Twin-Roll Strip-Cast Al-5.5Mg-0.02Ti Alloy Sheet

다국어 초록 (Multilingual Abstract)

High-strength aluminum alloy sheets with high magnesium contents were fabricated by a strip caster equipped with an asymmetric nozzle, which has been proven to be effective for reducing surface defects and internal segregation. 4 mm thick as-cast sheets consisting of fine dendrites and minor Al8Mg5 segregation were hot-rolled successfully to 1 mm sheets and subsequently annealed at various temperatures. The sheet revealed the tensile strength and elongation of 306 MPa and 34%, respectively, when it was rolled at 250℃ and subsequently annealed at 475℃, which exhibits the feasibility of the practical application for autobodies. The observed mechanical properties were explained on the basis of the microstructural characteristics of the alloy sheets.

참고문헌 (Reference)

1 H. W. Kim, 29-30 : 83-, 2007

2 M. A. Garcia-bernal, 60 : 850-, 2009

3 H. Ait-Amokhtar, 488 : 540-, 2008

4 H. Ait-Amokhtar, 54 : 4365-, 2006

5 H. Tsukahar, 248 : 304-, 1998

6 T. Haga, 191 : 238-, 2007

7 T. Haga, 172 : 271-, 2006

8 H. W. Kim, 1707-1712, 2008

9 D. Witkin, 49 : 297-, 2003

10 Z. C. Wang, 328 : 87-, 2002

11 C. B. Fuller, 338 : 8-, 2002

12 S. H. Xia, 490 : 471-, 2008

13 Y. Wang, 419 : 912-, 2002

14 H. Azizi-Alizamini, 57 : 1065-, 2007

15 J. H. Yoon, 37 : 686-, 1999

16 X. Duan, 394 : 192-, 2005

17 W. Wen, 373 : 204-, 2004

18 V. Taupin, 56 : 3002-, 2008

19 朴永秀, "박판주조법에 의해 제조한 Al-Mg-Si-X 합금의 미세조직 연구" 대한금속·재료학회 40 (40): 141-147, 2002

20 송영식, "박판 주조된 Al-5 Wt%Mg 합금의 열간압연 시 두께방향 불균일 집합조직 시뮬레이션" 대한금속·재료학회 46 (46): 135-143, 2008

21 G. E. Dieter, "Mechanical Metallurgy" Hee Jung Dang 1990

22 Vadim S. Zolotorevsky, "Casting Aluminum Alloys" Elsevier 154-157, 2007