The Microstructure Evolution of AA7050 in the Process of Homogenization

Zhen Hua Geng; Kai Li; Ping Wu

doi:10.4028/www.scientific.net/KEM.633.173

Paper Titles

Identification and Assessment of Natural Sodium Bentonite
p.154

Structural and Mineralogical Characterization of Green Nephrite in Hetian, Xinjiang, China
p.159

Loess Based Copolymer Composite for Removing Basic Fuchsin
p.165

Factors on Leaching Zinc and Copper from Zinc Leach Residue
p.169

The Microstructure Evolution of AA7050 in the Process of Homogenization
p.173

Study of Evolution Rule of Aggregates in Ceramic Suspension
p.179

Thermodynamic Analysis of Chemical Vapor Deposition Progress for SiC Coatings
p.183

Influence of Reinforcing Phase on the Oxidation Model of ZrB₂ Based Multi-Phase Ceramics
p.189

Microstructure and Properties of Al₂O₃-ZrO₂ Ceramics Prepared by Microwave Sintering
p.193

HomeKey Engineering MaterialsKey Engineering Materials Vol. 633The Microstructure Evolution of AA7050 in the...

The Microstructure Evolution of AA7050 in the Process of Homogenization

Abstract:

This paper used the metallographic analysis, X-ray diffraction analysis (XRD), differential scanning thermal analysis (DSC), scanning electron microscope (SEM) and electron probe analysis (EPMA) system to research the evolution law of the microstructure and properties of AA7050 under different homogenization system. And analyzes the cause of this evolution combined with the test results put forward. The research shows that high melting point eutectic phase S (Al₂CuMg) can be fully re-dissolution through two-stage homogenization, at the same time avoid the overburning of low melting eutectic phase. We optimized the AA7050 homogenization heat treatment system and the optimal homogenization scheme is 430°C/18h+467°C/12h.

You might also be interested in these eBooks

Testing and Evaluation of Inorganic Materials V

View Preview

Info:

Periodical:

Key Engineering Materials (Volume 633)

Pages:

173-178

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.633.173

Citation:

Cite this paper

Online since:

November 2014

Authors:

Zhen Hua Geng, Kai Li, Ping Wu*

Keywords:

AA7050, DSC, EPMA, Homogenization, Metallographic, SEM, XRD

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] Xu Ying, Jiang Li-Juan, Li He-Jun, The influence of Nano ZrO2 to the properties of Pb, Precious Metals, 2003, 24(3): 7-11.

Google Scholar

[2] Lukasak D A, Hart R M. Aluminum alloy development efforts for compression dominated structure of aircraft. Light Metal Age. 1991, 10(11).

Google Scholar

[3] Fang H C, Chen K H, Zhang Z, et al. Effect of Yb additions on microstructures and properties of 7A60 aluminum alloy. Transactions of Nonferrous Metals Society of China. 2008, 18(1): 28-32.

DOI: 10.1016/s1003-6326(08)60006-0

Google Scholar

[4] Liu Sheng-dan, Zhang Xin-ming, Huang Zhen-bao, The effect of solid solution treatments on the properties of a 7050 aluminum alloy, Transactions of Materials and Heat Treatment, 2006, 27(3): 54-59.

Google Scholar

[5] Wang Hongbin Huang Jinfeng YANG Bin, Current status and future Directions of Ultrahigh Strength Al-Zn-Mg-Cu Aluminum Alloys, Materials Review, 2004, 17(9): 1-4.

Google Scholar

[6] Xiong Bai-qing, Li Xi-wu, Zhang Yong-an, New type of high strength and low quenching sensitivity Al-7. 5 Zn-1. 65 Mg-1. 4 Cu-0. 12 Zr, The Chinese Journal of Nonferrous Metals, 2009, 19(9): 1539-1547.

Google Scholar

[7] Sun Feng-xian, Gai Feng-hua, Li Nian-kui , Homogenization treatment of ingot of Al-6. 1 Zn-2. 6 Mg-1. 6 Cu higher strength aluminum alloy, Light Alloy Fabrication Technology, 2007, 35(1): 16-19.

Google Scholar

[8] Fan X, Jiang D, Meng Q, et al. The microstructural evolution of an Al–Zn–Mg–Cu alloy during homogenization[J]. Materials Letters. 2006, 60(12): 1475-1479.

DOI: 10.1016/j.matlet.2005.11.049

Google Scholar