| Effect of heat-treatment on microstructure and properties of SiC particulate-reinforced aluminum matrix composite |
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| 作者姓名： | 孙有平 严红革 陈振华 张昊 |
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| 作者单位： | College of Materials Science and Engineering, Hunan University, Changsha 410082, China |
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| 基金项目： | Project（06FJ3041） supported by the Science and Technology Bureau of Hunan Province, China |
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| 摘 要： | The effects of solid solution and aging processing on the microstructures and mechanical properties of the multi-layer spray co-deposited 7090Al/SiCp composite were investigated. The experimented results show that fine grains and homogeneous microstructures can be obtained, the average grain size of the as-solid solution treated and as-aged composites after extrusion is under 3.0μm. A large amount of the Cu-rich phase particles form in the as-extruded samples, and solve into the matrix after solid solution treatment. After aging, the size of the precipitate phases, mainly MgZn2 and CuAl2 is less than 1.0 μm, which homogeneously distribute inside the grains and at the grain boundaries. The ultimate tensile strength of the composite treated at T6 state, i.e. solid solution treated at 475 ℃for 1 h then aged at 120 ℃ for 24 h, is up to 765 MPa.
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| 关 键 词： | 铝 合金 沉积物 热处理技术 |
| 收稿时间： | 2007-07-15 |
| 修稿时间： | 2007-09-10 |
Effect of heat-treatment on microstructure and properties of SiC particulate-reinforced aluminum matrix composite |
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| SUN You-ping, YAN Hong-ge, CHEN Zhen-hua, ZHANG Hao.Effect of heat-treatment on microstructure and properties of SiC particulate-reinforced aluminum matrix composite[J].Transactions of Nonferrous Metals Society of China,2007,17(A01):318-321. |
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| Authors: | SUN You-ping YAN Hong-ge CHEN Zhen-hua ZHANG Hao |
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| Abstract: | |
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| Keywords: | aluminum matrix composite spray deposition heat-treatment fracture morphology |
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