| 块体纳米晶Al-Zn-Mg-Cu合金的热处理 |
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| 引用本文： | 陈汉宾,程军胜,杨滨,张济山,樊建中,田晓风.块体纳米晶Al-Zn-Mg-Cu合金的热处理[J].中国有色金属学报,2007,17(1):30-34. |
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| 作者姓名： | 陈汉宾 程军胜 杨滨 张济山 樊建中 田晓风 |
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| 作者单位： | 1. 北京科技大学,新金属材料国家重点实验室,北京,100083
2. 北京有色金属研究总院,北京,100088 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 利用液氮球磨、真空热压和挤压工艺制备块体纳米晶Al-Zn-Mg-Cu合金,并对其固溶和时效处理进行研究,得到时效硬度曲线。利用X射线衍射仪和透射电镜对该合金热处理前后的微观组织进行分析,结果表明:块体制备过程中析出的MgZn2可以通过固溶处理使其回溶并在时效后沉淀析出;热压后晶粒尺寸为50~100 nm,热处理后晶粒长大到100 nm,部分晶粒达到200 nm。
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| 关 键 词： | 铝合金 块体纳米晶 低温球磨 固溶处理 时效处理 微观组织 |
| 文章编号： | 1004-0609（2007）01-0030-05 |
| 收稿时间： | 2006-05-11 |
| 修稿时间： | 2006-11-20 |
Heat treatment of bulk nanocrystalline Al-Zn-Mg-Cu alloy |
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| CHEN Han-bin,CHENG Jun-sheng,YANG Bin,ZHANG Ji-shan,FAN Jian-zhong,TIAN Xiao-feng.Heat treatment of bulk nanocrystalline Al-Zn-Mg-Cu alloy[J].The Chinese Journal of Nonferrous Metals,2007,17(1):30-34. |
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| Authors: | CHEN Han-bin CHENG Jun-sheng YANG Bin ZHANG Ji-shan FAN Jian-zhong TIAN Xiao-feng |
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| Affiliation: | 1. State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China; 2. Beijing General Research Institute for Nonferrous Metals, Beijing 100088, China |
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| Abstract: | Bulk nanocrystalline Al-Zn-Mg-Cu alloy was fabricated by cryomilling combined with vacuum hot pressing and extrusion.The aging-curve was obtained.The crystal structures and microstructures before and after heat treatment were investigated by X-ray diffractometry(XRD) and transmission electron microscopy(TEM),respectively.The results show that the deposition(MgZn2) of consolidation can be dissolved again by solid-solution,and precipitated during aging.The grain sizes of the bulk nanocrystalline Al-Zn-Mg-Cu alloy produced by vacuum hot pressing are 50?100 nm,some of them grow to 100 nm even part of them reach 200 nm after heat-treatment. |
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| Keywords: | aluminum alloy bulk nanocrystalline cryomilling solid-solution aging microstructure |
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