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Effect of Zn on Microstructure and Mechanical Properties of Al-Zn-Mg-Cu-Zr Alloy by Powder Metallurgy

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Abstract:

In this paper, full-density Al-Zn-Mg-Cu-Zr powder metallurgy (P/M) alloy is prepared by hot-press sintering in vacuum at 600°C. Experiments are conducted to evaluate the effects of Zn additive in the range of 7.2-8.4 wt.% on the microstructure and mechanical properties of Al-Zn-Mg-Cu-Zr alloys. X-ray diffraction (XRD), scanning electron microstructure (SEM) and electron probe micro-analyzer (EPMA), and mechanical properties such as tensile strength are measured. The porosity decreases gradually with increasing of Zn and it achieves 0.01% with a density of 2.95 g/cm3 at 8.4% Zn. The tensile strength reaches the maximal value of 436 MPa at 8.4% Zn.

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Periodical:

Advanced Materials Research (Volume 710)

Pages:

102-105

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.710.102

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Online since:

June 2013

Authors:

Chuan Dong Wu, Cheng Zhang Li, Pan Fang, Guo Qiang Luo, Qiang Shen

Keywords:

Al-Zn-Mg-Cu-Zr Alloy, Hot-Press Sintering, Mechanical Property, Microstructure, P/M

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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