Abstract
The effect of Mn, Mg, Zn and Zr elements on the microstructure and mechanical properties of 7N01 aluminum alloy was studied by hardness, electrical conductivity, tensile test, optical microscopy (OM) and scanning electron microscopy (SEM), which was based on the optimal extrusion and heat treatment process. Results show that a new alloy with optimum properties combination is found and its composition is Al–4.6Zn–1.55Mg–0.6Mn–0.15Cr–0.1Zr–0.03Ti (wt%), of which ultimate tensile strength and yield strength are 421.3 and 369.2 MPa respectively, and the phases are (Fe, Mn)Al6, η(MgZn2) and a small amount of η′(MgZn).
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Acknowledgements
This work was supported by the Liaoning Provincial Natural Science Foundation of China (2015021002), Hi-Tech Research and Development Program of China (2013AA032402), the Fundamental Research Funds for the Central Universities (N150904001 and N160913001), the National Natural Science Foundation of China (51574075 and U1608252), the National Key Research and Development Program of China (2016YFB0300901) and the China Postdoctoral Science Foundation (2015M570250).
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Gao, W. et al. (2018). Composition Optimization Study on 7N01 Aluminum Alloy. In: Han, Y. (eds) High Performance Structural Materials. CMC 2017. Springer, Singapore. https://doi.org/10.1007/978-981-13-0104-9_20
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DOI: https://doi.org/10.1007/978-981-13-0104-9_20
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