Microstructure and Mechanical Properties of as Cast Al-6.5Mg-1.5Zn-0.5Fe Alloy Followed by Cold Rolling and Subsequent Annealing

• Autorzy: Lee Seong-Hee

Identyfikatory

DOI

10.24425/amm.2019.129464

• Języki publikacji: EN

Abstrakty

EN

Microstructures and mechanical properties of as-cast Al-6.5Mg-1.5Zn-0.5Fe alloys newly alloy-designed for the parts of automobile were investigated in detail. The aluminum (Al) sheets of 4 mm thickness, 30 mm width and 100 mm length were reduced to a thickness of 1 mm by multi-pass rolling at ambient temperature and subsequently annealed for 1h at 200~500°C. The as-cast Al sheet was deformed without a formation of so large cracks even at huge rolling reduction of 75%. The recrystallization begun to occur at 250°C, it finished at 350°C. The as-rolled material showed tensile strength of 430 MPa and tensile elongation of 4.7%, however the specimen after annealing at 500°C showed the strength of 305 MPa and the elongation of 32%. The fraction of high angle grain boundaries above 15 degree increased greatly after annealing at high temperatures. These characteristics of the specimens after annealing were discussed in detail.

Słowa kluczowe

EN

aluminum alloy; cold rolling; annealing; microstructure; mechanical properties

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2019
• Tom: Vol. 64, iss. 3
• Strony: 875--878
• Opis fizyczny: Bibliogr. 13 poz., fot., rys., tab., wykr.

Twórcy

autor

Lee Seong-Hee

• MOKPO National University, Advanced Materials Science and Engineering, Youngsan-ro 1666, Chunggye-myun, Muan-gun, Jeonnam 58554, Korea

Bibliografia

• [1] S. Guo, Y. Xu, Y. Han, J. Liu, G. Xue, H. Nagaumi, Trans. Nonferrous Met. Soc. China 24, 2393 (2014).
• [2] X. Fan, Z. He, W. Zhou, S. Yuan, J. Mater. Proce. Tech. 228, 179 (2016).
• [3] L. Ding, Y. Weng, S. Wu, R. E. Sansers, Z. Jia, Q. Liu, Mater. Sci. Eng. A 651, 991 (2016).
• [4] M. J. Ahn, H. S. You, S. H. Lee, Kor. J. Met. Res. 26, 388 (2016).
• [5] J. H. Yang, S. H. Lee, Kor. J. Met. Res. 26, 628 (2016).
• [6] H. S. Ko, S. B. Kang and H. W. Kim, J. Kor. Inst. Met. & Mater. 37 (8), 891 (1999).
• [7] K. D. Woo, H. S. Na, H. J. Mun, I. O. Hwang, J. Kor. Inst. Met. & Mater. 38 (6), 766 (2000).
• [8] K. D. Woo, I. O. Hwang, J. S. Lee, J. Kor. Inst. Met. & Mater. 37 (12), 1468 (1999).
• [9] C. W. Park, H. Y. Kim, Trans. Kor. Soc. Mech. Eng. A 36 (12), 1675 (2012).
• [10] N. J. Park, J. H. Hwang, J. S. Roh, J. Kor. Inst. Met. & Mater. 47 (1), 1 (2009)
• [11] C. D. Yim, Y. M. Kim, S. H. Park, B. S. You, Kor. J. Met. Mater. 50 (9), 619 (2012).
• [12] D. H. Kim, J. M. Choi, D. H. Jo, I. M. Park, Kor. J. Met. Mater. 52 (3), 195 (2014).
• [13] L. P. Troeger, E. A. Starke Jr, Mater. Sci. Eng. A 277, 102 (2000).

Uwagi

EN

1. This research was supported by Strategy Core Materials Program of the Ministry of Trade, Industry & Energy, Republic of Korea.

PL

2. Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).