Effects of solution aging on mechanical and microstructures properties of Al6092/SiCp/β-eucryptite composites
Effects of solution aging on mechanical and microstructures properties of Al6092/SiCp/β-eucryptite composites
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DOI：
10.1088/1742-6596/2353/1/012006
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发表时间：
2022-10
期刊：
影响因子：
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通讯作者：
S. Zhang;Haiyun Jiang;Zhixiang Fu;Q. Hou
中科院分区：
文献类型：
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作者：
S. Zhang;Haiyun Jiang;Zhixiang Fu;Q. Hou
本文以Al6092/SiCp/β-LiAlSiO4颗粒增强铝基复合材料为主要研究对象。选择不同的固溶时效处理工艺对试件的微观组织和力学性能进行分析。揭示了固溶时效对复合材料的微观结构、沉淀相和位错的影响。结果表明，固溶时效处理提高了Al6092/SiCp/β-LiAlSiO4复合材料的刚度和强度。一方面，固溶时效促进了样品中高位错密度区和Mg2Si析出相的产生，增加了复合材料塑性变形所需的应力。此外，微米级SiCp的高模量特性可以自发承载载荷，β-LiAlSiO4的引入促进了增强相的分散。综上所述，固溶时效处理和颗粒强化相共同提高了Al6092的变形抗力。
This paper studied Al6092/SiCp/β-LiAlSiO4 particle-reinforced aluminum matrix composites as the main object. Different solution aging treatment processes were selected to analyze the microstructure and mechanical properties of the specimens. The effects of solution aging on the microstructure, precipitation phases, and dislocations of the composites were revealed. The results showed that the solution aging treatment improved the stiffness and strength of Al6092/SiCp/β-LiAlSiO4 composites. On the one hand, solution aging promoted the generation of high dislocation density zones and Mg2Si precipitation phases in the samples, which increased the stress required for plastic deformation of the composites. In addition, the high modulus property of micron-sized SiCp can spontaneously carry loads, and the introduction of β-LiAlSiO4 promotes the dispersion of the reinforcing phase. In conclusion, the solution aging treatment and the particle-reinforced phase can jointly improve the deformation resistance of Al6092.