X-ray diffraction analysis of thermal behavior of nanocrystalline copper produced by severe plastic deformation

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	X-ray diffraction analysis of thermal behavior of nanocrystalline copper produced by severe plastic deformation
	I. V. Aleksandrov; R. M. Mazitov; A. R. Kil'mametov; K. Zhang; K. Lu; R. Z. Valiev
	2000
发表期刊	Physics of Metals and Metallography
ISSN	0031-918X
卷号	90 期号:2 页码:164-168
摘要	X-ray diffraction analysis carried out at 85-295 K was used to study nanocrystalline copper of 93.98% purity produced by seven plastic deformation. Data obtained for copper produced by severe plastic deformation by torsion and equichannel angular extrusion were analyzed within the quasi-harmonic Debye approximation. The analysis showed the decrease in the Dehye temperature (19-23%), increase in static (similar to 45%) and dynamic (similar to 48%) atomic displacements, and increase in the coefficient of linear thermal expansion (more than 3 times) as against those for coarse-grained copper. The decrease in the Debye temperature is likely to be due to the formation of nonequilibrium grain boundaries. The results agree with the data on the Young's and shear adiabatic modules obtained earlier by the ultrasonic technique.
部门归属	ufa state aviat tech univ, inst phys adv mat, ufa 450000, bashkortostan, russia. russian acad sci, ural res ctr, inst phys mol & crystals, ufa 450075, bashkortostan, russia. inst met res, shenyang 110015, peoples r china.;aleksandrov, iv (reprint author), ufa state aviat tech univ, inst phys adv mat, ul k marksa 12, ufa 450000, bashkortostan, russia
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WOS记录号	WOS:000089393500013
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/36967
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	I. V. Aleksandrov,R. M. Mazitov,A. R. Kil'mametov,et al. X-ray diffraction analysis of thermal behavior of nanocrystalline copper produced by severe plastic deformation[J]. Physics of Metals and Metallography,2000,90(2):164-168.
APA	I. V. Aleksandrov,R. M. Mazitov,A. R. Kil'mametov,K. Zhang,K. Lu,&R. Z. Valiev.(2000).X-ray diffraction analysis of thermal behavior of nanocrystalline copper produced by severe plastic deformation.Physics of Metals and Metallography,90(2),164-168.
MLA	I. V. Aleksandrov,et al."X-ray diffraction analysis of thermal behavior of nanocrystalline copper produced by severe plastic deformation".Physics of Metals and Metallography 90.2(2000):164-168.