Microstructure characteristics of as-surface nanocrystallized 1420 aluminum alloy by high-energy shot peening

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	Microstructure characteristics of as-surface nanocrystallized 1420 aluminum alloy by high-energy shot peening
	L. Q. Hu ; K. Wang ; G. Liu ; B. S. Xu
刊名	Transactions of Nonferrous Metals Society of China
	2005
卷号	15 期号:3 页码:615-618
关键词	1420 alloy aluminum alloy high-energy shot peening surface nanocrystallization microstructure microhardness low-carbon steel grain-refinement
ISSN号	1003-6326
中文摘要	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.
原文出处	://WOS:000230449600025
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/34873]
专题	金属研究所_中国科学院金属研究所
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.
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.
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.