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Microstructure characteristics of as-surface nanocrystallized 1420 aluminum alloy by high-energy shot peening
Hu, LQ; Wang, K; Liu, G; Xu, BS
Corresponding AuthorHu, LQ(hlqty@126.com)
2005-06-01
Source PublicationTRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
ISSN1003-6326
Volume15Issue:3Pages:615-618
AbstractA 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.
Keyword1420 alloy aluminum alloy high-energy shot peening surface nanocrystallization microstructure microhardness
Indexed BySCI
Language英语
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000230449600025
PublisherALLERTON PRESS INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/82551
Corresponding AuthorHu, LQ
Affiliation1.Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Hu, LQ,Wang, K,Liu, G,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.
APA Hu, LQ,Wang, K,Liu, G,&Xu, BS.(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.
MLA Hu, LQ,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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