Materials Reports  2019, Vol. 33 Issue (Z2): 406-409 |
| METALS AND METAL MATRIX COMPOSITES |
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| Effect of Sn Content on Microstructure and Solubility of Al-Zn Alloy |
| ZHOU Yong, ZHAO Fei, GAO Qian, SUN Liang, DONG Hui, ZHAI Wenyan
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| School of Material Science and Engineering, Xi’an Shiyou University, Xi’an 710065 |
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Abstract In order to improve the microstructure of the Al-Zn alloy, the dissolution rate of the alloy canbe effectively controlled. The influence of different Sn content on microstructure and electrochemical properties of as-cast Al-Zn alloy was studied by means of optical microscope (OM), X-ray diffractometer (XRD), scanning electron microscope (SEM), energy dispersive spectrometer (EDS) and electrochemical workstation. The results show that the alloy is mainly composed of Al matrix phase, Al0.71Zn0.29 phase and Sn phase, with the increase of Sn element content, the content of the precipitated phase at the grain boundary is increased obviously, the size is gradually increased, and the grain is gradually changed into a strip shape. When the Sn content increased from 0.1wt% to 2wt%, the average grain size of the alloy decreased from 194.54 μm to 65.33 μm, and the dissolution rate and the electrochemical activity of the alloy were continuously improved. As Sn content continued to increase, the average grain size of the alloy gradually increased, while dissolution rate and electrochemical activity decreased.
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Published: 25 November 2019
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| Fund:This work was financially supported by Xi’an Shiyou University Graduate Innovation and Practice Ability Training Project (YCS17211038), Xi’an Shiyou University “Material Science and Engineering” Provincial Superiority Discipline (YS37020203). |
| About author:: Yong Zhou is mainly engaged in the research of petroleum engineering materials welding and surface engineering technology. He has held and participated in more than 20 scientific research projects, and has participated in compilation of one textbook. Furthermore, he gained the second prize of Shaanxi Provincial Science and Technology Progress Award, the third prize of China National Petroleum and Natural Gas Corporation Science and Technology Progress Award. He also published more than 50 academic papers in domestic and international public journals. |
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