Materials Reports  2020, Vol. 34 Issue (Z1): 334-337 |
| METALS AND METAL MATRIX COMPOSITES |
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| Effects of Al3Zr Dispersoids on Mechanical Properties of 7050Forging Plates |
| SONG Weiwei1,2, LUO Shuncheng1, HAN Zhaoyu1, CHAO Daiyi1,2, FANG Qingwan1, LYU Zhengfeng1,2, CHENG Rence1,2
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1 Shandong Nanshan Aluminium Co., Ltd., Longkou 265713, China;
2 National Engineering Research Center for Plastic Working of Aluminum Alloys, Longkou 265700, China |
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Abstract In this paper, 7050 aluminum alloy ingots with different Al3Zr precipitation conditions were obtained by using different homogenization processes and controlling the addition of Zr elements. The tensile properties and fracture toughness of 7050-T74 forged plates affected by Al3Zr dispersoids were systematically studied. It is shown that the more uniform distribution and higher numberr density of the Al3Zr dispersoids, the stronger the recrystallization inhibition effect, and the finer and more uniform subgrains could be obtained. At the same time, the distribution of Al3Zr dispersoids could affect material's precipitation formation during the aging process. When Al3Zr dispersoid size is finer and number density is higher, the peak aging time of the η′ phase in 7050 alloy material will be advanced, using the same T74 aging procedure, 7050 forging plate's strength would be decreased significantly.
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Published: 01 July 2020
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| About author:: Weiwei Song received her Ph. D. degree in mechanical engineering from Mississippi State University in Aug. 2015. Her Ph. D. research mainly focused in developing high strength corrosion resistance magnesiuim alloy and aluminum alloys, as well as conducting material microstructure and deformation process modifications.She has published 3 SCI journal papers as the first author and participated in published 3 journals. She works as a material engineer in the Research Institute of Shandong Nanshan Aluminum Co., Ltd. since 2015, mainly engaged in studying the material manufacturing process-microstructure-propertiy relationship for the aerospace forging products. |
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