| 引用本文: | 杨祥伟，揭晓华，曾旭钊，林焕立，黄展原.7050铝合金表面亚微米晶层摩擦磨损性能[J].中国表面工程,2011,24(3):38~42 |
| YANG Xiang-wei, JIE Xiao-hua, ZENG Xu-zhao, LIN Huan-li, HUANG Zhan-yuan.Wear Performance of the Microcrystallization Layer on the Surface of 7050 Al Alloy[J].China Surface Engineering,2011,24(3):38~42 |
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| 摘要: |
| 采用增压喷丸方式在7050铝合金表面制备了亚微米晶层，观察并分析了亚微米晶层的组织结构，测试了喷丸前后的硬度，研究了亚微米化前后以及亚微米化后经退火处理3种状态下7050铝合金表面的滑动磨损特性，结果表明：由于增压喷丸使7050铝合金表面发生了严重的塑性变形而形成了一层厚度为30～40 μm的亚微米晶层，硬度比未喷丸材料提高了2倍，喷丸后材料的磨损失重量明显减少，约为未喷丸处理试样的一半，特别是喷丸后经过退火的材料磨损量更小，表现出良好的耐磨性能。 |
| 关键词: 增压喷丸 表面亚微米化 7050铝合金 滑动磨损性能 |
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| 基金项目:广东省教育部产学研结合项目(2009B090300119) |
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| Wear Performance of the Microcrystallization Layer on the Surface of 7050 Al Alloy |
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YANG Xiang-wei, JIE Xiao-hua, ZENG Xu-zhao, LIN Huan-li, HUANG Zhan-yuan1,2
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1. Faculty of Material and energy, Guang dong University of technology, Guangzhou 510006;2. Guang dong Greatoo Moulds Inc, Jieyang Guangzhou 515500
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| Abstract: |
| The microcrystalline layer on the surface of 7050 Al alloy was obtained by the addedpressure shot peening process. The microstructure features of the surface layer were characterized. The microhardness of samples before and after the shot peening was measured. Sliding wear performance of 7050 Al alloy was studied on the three kinds of conditions of untreated, shot peening and after shot peening with annealing. The results showed that after shot peening treatment, serious plastic deformation of 7050 Al alloy was produced and formed microcrystallization layer with the thickness about 30～40 μm. The microhardness rasied 2 times more than that of untreated samples. Wear loss Samples with shot peening decreased with half of the untreated samples, and after annealing of samples with shot peening, wear loss was even becoming more smaller, which showed good wear performance. |
| Key words: addedpressure shot peening surface microcrystallization 7050 Al alloy sliding wear performance |
