Effect of Rolling Process on the Microstructure of AlMgSi Alloy

Abstract:

In this paper, a AlMgSi alloy for sheet materials was designed on the base of 6111 aluminum alloy, the alloy sheet was fabricated by the rolling process combination of hot and cold rolling, the effect of rolling process on the microstructure of alloy was studied. The results show that different 1st rolling pass reductions of 13%, 33% and 47%, alloy microstructure changes obviously. With the increasing of 1st rolling pass reductions, the re-crystallization structure grow in quantity, re-crystallization grain more and more dense, flat, uniform, and the second phase particles are also more small, distributes more uniform. When the first cold rolled reduction is 47%, degree of grain refinement, the second phase particles fragmentation and tissue uniformity in rolling 3st state are obviously superior to the 1st state and 2st states. The deformation inhomogeneity can be overcome by improving the first reduction rate, the re-crystallization process of synchronization between surface layer and the center layer is better.

• Periodical: Advanced Materials Research (Volumes 399-401)
• Pages: 40-45
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.399-401.40
• Online since: November 2011
• Authors: He Liang Li, Xiao Guang Yuan, Ming Fu Wu, Hong Jun Huang
• Keywords: Al-Mg-Si Alloy, Deformation Amount, Rolling Process

References

[1] Hui Zhang, Luoxing Li, Deng Yuan, Dashu Peng:Materials Characterization Vol.58 (2007),pp.168-173.

[2] L.P. Troeger E.A. Starke:Materials Science and Engineering A277 (2000),pp.102-113.

[3] J.J. Gracio,F. Barlat, E.F. Rauch P.T. Jones V.F. Neto A.B. Lopes:International Journal of Plasticity 20(2004),pp.427-445.

DOI: 10.1016/s0749-6419(03)00095-0

[4] J.Sarkar T.R.G. Kutty D.S. Wikinson J.D. Embury D.J. Lloyd:Materials Science and Engineering A369(2004),pp.258-266.

[5] J.Buha, R.N. Lumley A.G. Crosky,K.Hono:Acta Materialia 55(2007),pp.3015-3024.

DOI: 10.1016/j.actamat.2007.01.006

[6] J.Daniel Bryant:Metallyrgical and Materials Transactions a,Vol.30A(1999),pp.1999-2006.

[7] S.Esmatili, X.Wang, D.J. Lloyd, W.J. Poole:Metallyrgical and Materials Transactions, Vol.34 A(2003), pp.751-763.

[8] Shaokang Guan,Bo Yao,Yingxin Wang:Materials for Mechanical Engineering (in Chinese),2001,25(5):12-14.

[9] Zhutang Wang:Light Alloy Fabrication Technology(in Chinese),2002,30(3):8.

[10] F.J. Humphreysm:Acta Metallurgica, 25(1977),pp.1323-1344.

[11] Shuquan Liang,Dikai Guan,Zhiwei Mao,et al.:Journal of Central South University(Science and Technology) (in Chinese),2010,41(3):906-911.

[12] Weiguo Sun,Henian Xu,Wenju Jiang,et al.:Light Alloy Fabrication Technology(in Chinese),2006, 34(12):26-28.