| Microstructure characteristics of as-surface nanocrystallized 1420 aluminum alloy by high-energy shot peening |
| L. Q. Hu; K. Wang; G. Liu; B. S. Xu
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| 2005
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| 发表期刊 | Transactions of Nonferrous Metals Society of China
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| ISSN | 1003-6326
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| 卷号 | 15期号:3页码:615-618 |
| 摘要 | A nanostructured surface layer was fabricated on 1420 aluminum alloy by high-energy shot peening. Microstructures were characterized by X-ray diffractometer(XRD), transmission electron microscope(TEM) and high-resolution electron microscope ( HRTEM), and microhardness measurement was conducted along the depth from top surface layer to matrix of the sample peened for 30 min. The results show that a nanocrystalline layer about 20 mu m in thickness is formed on the surface of the sample after high-energy shot peening, in which the grain size is changed from about 20 nm to 100 nm. In the surface layer of 20 - 50 mu m in depth, the microstructure consists of sub-micron grains. The surface nanocrystallization is accomplished by dislocation slip. The microhardness of the top surface nanostructured layer is enhanced obviously after high-energy shot peening(HESP) compared with that of the coarse-grained matrix. |
| 部门归属 | taiyuan univ technol, coll mat sci & engn, taiyuan 030024, peoples r china. chinese acad sci, inst met res, shenyang 110016, peoples r china.;hu, lq (reprint author), taiyuan univ technol, coll mat sci & engn, taiyuan 030024, peoples r china;hlqty@126.com
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| 关键词 | 1420 Alloy
Aluminum Alloy
High-energy Shot Peening
Surface
Nanocrystallization
Microstructure
Microhardness
Low-carbon Steel
Grain-refinement
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| URL | 查看原文
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| WOS记录号 | WOS:000230449600025
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.imr.ac.cn/handle/321006/34873
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| 专题 | 中国科学院金属研究所
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推荐引用方式
GB/T 7714 |
L. Q. Hu,K. Wang,G. Liu,et al. Microstructure characteristics of as-surface nanocrystallized 1420 aluminum alloy by high-energy shot peening[J]. Transactions of Nonferrous Metals Society of China,2005,15(3):615-618.
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| APA |
L. Q. Hu,K. Wang,G. Liu,&B. S. Xu.(2005).Microstructure characteristics of as-surface nanocrystallized 1420 aluminum alloy by high-energy shot peening.Transactions of Nonferrous Metals Society of China,15(3),615-618.
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| MLA |
L. Q. Hu,et al."Microstructure characteristics of as-surface nanocrystallized 1420 aluminum alloy by high-energy shot peening".Transactions of Nonferrous Metals Society of China 15.3(2005):615-618.
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