The Microstructure and Mechanical Properties of Super-High Strength Al Alloys by Spray Forming

Abstract:

To analysis the microstructure and properties of super-high strength Al-Zn-Mg-Cu alloys containing Zr ,Ni and Mn, the apparatus of SEM、TEM、and Tensile machine was used. The results show that the microstructure was fine and homogeneous, the phases became finer for the alloys with adding Zr, Mn, Ni than the alloy with Zr only after solid solution. The ultimate tensile strength of the alloy was 850MPa and the elongation was 5% respectively at peak aging.

• Periodical: Advanced Materials Research (Volumes 535-537)
• Pages: 909-914
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.535-537.909
• Online since: June 2012
• Authors: Guo Wei Zhang, Zhen Chen, Wei Chen, Hai Ying Xin, Jing Zhai, An Zhen Guo, Li Ma, Gang Chen
• Keywords: Mechanical Property, Microstructure, Spray Forming

References

[1] Robinson JS, Cudd RL, Tanner DA. Quench sensitivity and tensile property inhomogeneity in 7010 forgings. J Mater Process Technol 2001;119:261–7.

DOI: 10.1016/s0924-0136(01)00927-x

[2] Liu SD, Zhang XM, Chen MA. Effect of Zr content on quench sensitivity of AlZnMgCu alloys. Trans Nonferrous Met Soc China 2007;17:787–92.

[3] C. Mondal, A.K. Mukhopadhyay, T. Raghu, and V.K. Varma, Tensile properties of peak aged 7055 aluminum alloy extrusions, Mater. Sci. Eng. A, 455(2007), No.3, p.673.

DOI: 10.1016/j.msea.2006.10.138

[4] M. Dixit, R.S. Mishra, and K.K. Sankaran, Structure-property correlations in Al 7050 and Al 7055 high-strength aluminum alloys, Mater. Sci. Eng. A, 478(2008), No.1-2, p.163.

DOI: 10.1016/j.msea.2007.05.116

[5] S.D. Liu, X.M. Zhang, M.A. Chen, et al., Influence of aging on quench sensitivity effect of 7055 aluminum alloy, Mater. Charact., 59(2008), No.1, p.53.

DOI: 10.1016/j.matchar.2006.10.019

[6] Z.H. Li, B.Q. Xiong, Y.A. Zhang, et al., Ageing behavior of an Al-Zn-Mg-Cu alloy pre-stretched thick plate, J. Univ. Sci. Technol. Beijing, 14(2007), No.3, p.246. [7] K.H. Chen

DOI: 10.1016/s1005-8850(07)60047-4

[7] H.W. Liu, Z. Zhang, et al., The improvement of constituent dissolution and mechanical properties of 7055 aluminum alloy by stepped heat treatments, J. Mater. Process. Technol., 142(2003), No.1, p.190.

DOI: 10.1016/s0924-0136(03)00597-1

[8] Dorward RC, Beerntsen DJ. Grain Structure and quench-rate effects on strength and toughness of AA7050 Al–Zn–Mg–Cu–Zr alloy. Metall Mater Trans A 1995;26:2481–4.1970;1:1735–40.

DOI: 10.1007/bf02671263

[9] Sharma M, Amateau M, Eden T. Mesoscopic structure control of spray formed high strength Al–Zn–Mg–Cu Alloys. Acta Mater 2005;53:2919–24.

DOI: 10.1016/j.actamat.2005.03.007

[10] Sharma M, Amateau M, Eden T. Hardening mechanisms of spray formed Al–Zn–Mg–Cu alloys with scandium and other elemental additions. J Alloy Compd 2006;416:135–42.

DOI: 10.1016/j.jallcom.2005.08.045