Mechanical Properties and Microstructure Evolution of AA1100 Aluminum Sheet Processed by Accumulative Press Bonding Process

doi:10.1007/s40195-016-0441-y

Abstract

Abstract:

Accumulative press bonding (APB) is a novel variant of severe plastic deformation processes, which is devised to produce materials with ultra-fine grain. In the present work, the mechanical properties and microstructural evolution of AA1100 alloy, which is produced by APB technique, were investigated. The study of the microstructure of AA1100 alloy was performed by optical microscopy. The results revealed that the grain size of the samples decreased to 950 nm after six passes of APB process. The yield strength of AA1100 alloy after six passes of the process increased up to 264 MPa, which is three times higher than that of the as-cast material (89 MPa). After six passes, microhardness values of AA1100 alloy increased from 38 to 61 HV. Furthermore, the results showed that the behavior of variations in mechanical properties is in accordance with the microstructural changes and it can be justified by using the Hall-Patch equation. Moreover, the rise in the yield strength can be attributed to the reduction in the grain size leading to the strain hardening.

Key words: Severe plastic deformation, Accumulative press bonding, Mechanical properties, Metallurgical properties, AA1100 alloy

Amir Mostafapor,Vahid Mohammadinia. Mechanical Properties and Microstructure Evolution of AA1100 Aluminum Sheet Processed by Accumulative Press Bonding Process[J]. Acta Metallurgica Sinica (English Letters), 2016, 29(8): 735-741.

Figures/Tables 12

Fig. 1 Image of optical microscopy of the annealed AA1100 alloy

Fig. 2 Schematic illustration of APB process

Fig. 3 Dimensions of the samples for tensile test

Fig. 4 Optical microscopy of the samples produced by APB process in ×10 magnification: a the first pass, b the third pass, c the fifth pass, d the sixth pass

Fig. 5 Illustration of the mechanism of the surface film formation in the first pass of APB process

Fig. 6 Polarized optical microscopy of the cross section a the first pass, b the third pass, c the fifth pass, d the sixth pass

Fig. 7 Stress-strain curve of fabricated samples with different numbers of passes of the APB process

Fig. 8 Diagram of percentage elongation of AA1100 alloy fabricated by different passes of APB process

Fig. 9 Variation of the hardness with the passes of the APB process

Fig. 10 Yield strength of pure aluminum fabricated via ARB in various passes of process

Fig. 11 Comparison of yield strength of AA1100 fabricated via APB and ARB in the first and last passes of both processes

References

[1]	S.S. Li, J. Chen, C. Chen, D.Zeng Xia, Acta Metall.Sin. (Engl. Lett.) 28, 678(2015)
[2]	A. Elrefaey, N.G. Ross, Acta Metall.Sin. (Engl. Lett.) 28, 715(2015)
[3]	Z.Y. Ye, D.X. Liu, M. Yuan, X.M. Zhang, Z. Yang, M.X. Lei, Acta Metall.Sin. (Engl. Lett.) 28, 608(2015)
[4]	I. Sabirov, M.Y. Murashkin, R.Z. Valiev, Mater. Sci. Eng. A 560, 1 (2013)
[5]	W.R. Osório, L.C. Peixoto, L.R. Garcia, A. Garcia, Acta Metall.Sin. (Engl. Lett.) 22, 241(2009)
[6]	A. Azushimaa, R. Koppb, A. Korhonenc, D.Y. Yangd, F. Micarie, G.D. Lahotif, P. Grocheg, J. Yanagimotoh, N. Tsujii, A. Rosochowskij, A. Yanagidaa, CIRP Ann.Manuf. Technol. 57, 716(2008)
[7]	R.Z. Valiev, Y. Estrin, Z. Horita, T.G. Langdon, M.J. Zehetbauer, Y. Zhu, JOM 58, 33 (2006)
[8]	P.B. Prangnell, J.R. Bowen, P.J. Apps, Mater. Sci. Eng. A 375, 178 (2004)
[9]	R.Z. Valiev, T.G. Langdon, Prog. Mater Sci. 51, 881(2006)
[10]	Z.M. Zhang, C.J. Xu, J.C. Wang, H.Z. Liu, Acta Metall.Sin. (Engl. Lett.) 19, 223(2006)
[11]	R.Z. Valiev, N.A. Krasilnikov, N.K. Tsenev, Mater. Sci. Eng. A 137, 35 (1991)
[12]	R.Z. Valiev, Mater. Sci. Eng. A 234, 59 (1997)
[13]	S. Amirkhanlou, M. Ketabchi, N. Parvin, S. Khorsand, R. Bahrami, Mater. Des. 51, 367(2013)
[14]	M.R. Toroghinejad, R. Jamaati, J. Dutkiewicz, J.A. Szpunar, Mater. Des. 51, 274(2013)
[15]	M. Eizadjou, H.D. Manesh, K. Janghorban, Mater. Des. 30, 4156(2009)
[16]	M. Raei, M.R. Toroghinejad, R. Jamaati, J.A. Szpunar, Mater. Sci. Eng. A 527, 7068 (2010)
[17]	H.A. Mohamed, J. Washburn, Weld. J. 54, 302(1975)
[18]	N. Tsuji, T. Toyoda, Y. Minamino, Y. Koizumi, T. Yamane, M. Komatsu, M. Kiritani, Mater. Sci. Eng. A 350, 108 (2003)
[19]	A. Rezaee-Bazzaz, S. Ahmadian, H. Reihani, Mater. Des. 32(8), 4580(2011)
[20]	S.H. Lee, Y. Saito, N. Tsuji, H. Utsunomiya, T. Sakai, Scr. Mater. 46, 281(2002)
[21]	X. Huang, N. Tsuji, N. Hansen, Y. Minamino, Mater. Sci. Eng. A 340, 265 (2003)
[22]	N. Wang, Z.R. Wang, K.T. Aust, U. Erb, Acta Metall. Mater. 43, 519(1995)
[23]	H. Pirgazi, A. Akbarzadeh, R. Petrov, L. Kestens, Mater. Sci. Eng. A 497, 132 (2008)
[24]	Y. Saito, N. Tsuji, H. Utsunomiya, T. Sakai, R.G. Hong, Scr. Mater. 39, 1221(1998)
[25]	D.G. Morris, Strength and Ductility of Nanocrystalline Materials: What do Really Understand? in Proceeding of the 22th Riso International Symposium on Material Science: Science of Metastable and Nanocrystalline Alloys Structure, Properties and Modeling. Riso National Laboratory, Roskilde, Denmark, September 3-7, 2001
[26]	N. Tsuji, Y. Ito, Y. Saito, Y. Minamino, Scr. Mater. 47, 893(2002)
[27]	Y.M. Wang, E. Ma, Acta Metall. 52, 1699(2004)
[28]	J. Gubicza, N.Q. Chinh, T. Csanádi, T.G. Longdon, T. Ungár, Mater. Sci. Eng. A 462, 86 (2007)
[29]	R. Anthony, F.J. Humphreys, G.S. Rohrer, M. Hatherly, Amsterdam, 2004)
[30]	D.A. Hughes, N. Hansen, Acta Mater. 45, 3871(1997)