| 7050铝合金表面亚微米化及其显微硬度的研究 |
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| 引用本文： | 杨祥伟,揭晓华,郑向新,黄展原. 7050铝合金表面亚微米化及其显微硬度的研究[J]. 热加工工艺, 2011, 40(4) |
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| 作者姓名： | 杨祥伟 揭晓华 郑向新 黄展原 |
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| 作者单位： | 1. 广东工业大学材料与能源学院,广东广州,510006
2. 广东巨轮股份有限公司,广东揭阳,515500 |
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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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| 摘 要： | 通过改进7050铝合金表面纳米化技术(调节喷丸压力、弹丸直径和喷丸时间)在材料表面获得亚微米晶层,利用OM、XRD、SEM等方法对亚微米结构表层进行了观察和分析。结果表明:喷丸使7050铝合金表面发生一定的塑性变形,表层亚微米晶尺寸约88 nm,显微硬度比基体提高2倍。
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| 关 键 词： | 喷丸 表面亚微米化 7050铝合金 显微硬度 |
Study on Surface Micro-crystallization of 7050 Al Alloy and Its Microhardness |
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| YANG Xiangwei,JIE Xiaohua,ZHENG Xiangxin,HUANG Zhanyuan. Study on Surface Micro-crystallization of 7050 Al Alloy and Its Microhardness[J]. Hot Working Technology, 2011, 40(4) |
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| Authors: | YANG Xiangwei JIE Xiaohua ZHENG Xiangxin HUANG Zhanyuan |
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| Affiliation: | YANG Xiangwei1,JIE Xiaohua1,ZHENG Xiangxin2,HUANG Zhanyuan2(1.Faculty of Material and Energy,Guangdong University of Technology,Guangzhou 510006,China,2.Guangdong Greatool Moulds Inc,Jieyang 515500,China) |
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| Abstract: | The surface nano-crystallization of 7050 Al alloy was obtained using improved technology(including shot peening pressure,diameters of projectiles and shot peening time).The microstructure features of the surface layer were observed and analyzed using OM,XRD and SEM.The results show that after shot peening treatment,certain plastic deformation is found.The grain size of micro-crystallites on the surface layer is about 88 nm.The surface hardness rasies 2 times more than untreated samples. |
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| Keywords: | shot peening surface micro-crystallization 7050 Al alloy microhardness |
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