IMR OpenIR
The Linear Thermal Expansion of Bulk Nanocrystalline Ingot Iron from Liquid Nitrogen to 300 K
Wang,SG1; Mei,Y2; Long,K1; Zhang,ZD1
Corresponding AuthorWang,SG(sgwang@imr.ac.cn)
2009-09-17
Source PublicationNanoscale Research Letters
ISSN1556-276X
Volume5Issue:1
AbstractAbstractThe linear thermal expansions (LTE) of bulk nanocrystalline ingot iron (BNII) at six directions on rolling plane and conventional polycrystalline ingot iron (CPII) at one direction were measured from liquid nitrogen temperature to 300 K. Although the volume fraction of grain boundary and residual strain of BNII are larger than those of CPII, LTE of BNII at the six measurement directions were less than those of CPII. This phenomenon could be explained with Morse potential function and the crystalline structure of metals. Our LTE results ruled out that the grain boundary and residual strain of BNII did much contribution to its thermal expansion. The higher interaction potential energy of atoms, the less partial derivative of interaction potential energy with respect to temperature T and the porosity free at the grain boundary of BNII resulted in less LTE in comparison with CPII from liquid nitrogen temperature to 300 K. The higher LTE of many bulk nanocrystalline materials resulted from the porosity at their grain boundaries. However, many authors attributed the higher LTE of many nanocrystalline metal materials to their higher volume fraction of grain boundaries.
KeywordLinear thermal expansion Bulk nanocrystallined materials Severe rolling technique
DOI10.1007/s11671-009-9441-4
Language英语
WOS IDBMC:10.1007/s11671-009-9441-4
PublisherSpringer New York
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80426
Corresponding AuthorWang,SG
Affiliation1.Chinese Academy of Sciences; Shenyang National Laboratory for Materials Science, Institute of Metal Research, and International Centre for Materials Physics
2.Dalian Fisheries University; Institute of Sciences
Recommended Citation
GB/T 7714
Wang,SG,Mei,Y,Long,K,et al. The Linear Thermal Expansion of Bulk Nanocrystalline Ingot Iron from Liquid Nitrogen to 300 K[J]. Nanoscale Research Letters,2009,5(1).
APA Wang,SG,Mei,Y,Long,K,&Zhang,ZD.(2009).The Linear Thermal Expansion of Bulk Nanocrystalline Ingot Iron from Liquid Nitrogen to 300 K.Nanoscale Research Letters,5(1).
MLA Wang,SG,et al."The Linear Thermal Expansion of Bulk Nanocrystalline Ingot Iron from Liquid Nitrogen to 300 K".Nanoscale Research Letters 5.1(2009).
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wang,SG]'s Articles
[Mei,Y]'s Articles
[Long,K]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wang,SG]'s Articles
[Mei,Y]'s Articles
[Long,K]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wang,SG]'s Articles
[Mei,Y]'s Articles
[Long,K]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.