The effect of constrained groove pressing on grain size, dislocation density and electrical resistivity of low carbon steel

被引：101
作者：
Khodabakhshi, F. [1 ]
Kazeminezhad, M. [1 ]
机构：
[1] Sharif Univ Technol, Dept Mat Sci & Engn, Tehran, Iran
来源：
MATERIALS & DESIGN | 2011年 / 32卷 / 06期
关键词：
Ferrous metals and alloys; Forming; Electrical; DEFORMATION-BEHAVIOR; NANOSTRUCTURED MATERIALS; MECHANICAL-PROPERTIES; PLASTIC-DEFORMATION; MICROSTRUCTURE; COPPER; CONDUCTIVITY; EVOLUTION; ALLOYS;
D O I：
10.1016/j.matdes.2011.02.032
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this research, constrained groove pressing (CGP) technique is used for imposing severe plastic deformation (SPD) on the low carbon steel sheets. Using transmission electron microscopy (TEM), X-ray diffraction (XRD) and optical microscopy, the microstructural characteristics of produced sheets are investigated. The results show that CGP process can effectively refine the coarse-grained structure to an ultrafine grain range. Dislocation densities of the ultrafine grained low carbon steel sheets are quantitatively calculated and it is found that the CGP can effectively enhance the dislocation density of the sheets. Measurements of their electrical resistivity values show that microstructure refinement and increasing the dislocation density can efficiently increase the electrical resistivity of the CGPed sheets up to similar to 100%. (C) 2011 Elsevier Ltd. All rights reserved.
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页码：3280 / 3286
页数：7
相关论文
共 44 条
[1]  
[Anonymous], THERMOELECTRICS HDB
[2]  
[Anonymous], 2002, E105296 ASTM INT
[3]   Effect of isothermal ageing on the electrical resistivity and microstructure of Pb-Sn-Zn ternary alloys [J].
El-Daly, AA ;
Abdel-Daiem, AM ;
Yousf, M .
MATERIALS CHEMISTRY AND PHYSICS, 2003, 78 (01) :73-80
[4]   Influence of composition, heat treatment and neutron irradiation on the electrical conductivity of copper alloys [J].
Eldrup, M ;
Singh, BN .
JOURNAL OF NUCLEAR MATERIALS, 1998, 258 :1022-1027
[5]   Strain gradient plasticity modelling of high-pressure torsion [J].
Estrin, Y. ;
Molotnikov, A. ;
Davies, C. H. J. ;
Lapovok, R. .
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 2008, 56 (04) :1186-1202
[6]   Processing of a low-carbon steel by equal-channel angular pressing [J].
Fukuda, Y ;
Oh-ishi, K ;
Horita, Z ;
Langdon, TG .
ACTA MATERIALIA, 2002, 50 (06) :1359-1368
[7]   Achieving exceptional superplasticity in a bulk aluminum alloy processed by high-pressure torsion [J].
Horit, Zenji ;
Langdon, Terence G. .
SCRIPTA MATERIALIA, 2008, 58 (11) :1029-1032
[8]   RETRACTED: Nanostructure and mechanical properties of 0-7 strained aluminum by CGP: XRD, TEM and tensile test (Retracted article. See vol. 640, pg. 480, 2015) [J].
Hosseini, E. ;
Kazeminezhad, M. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2009, 526 (1-2) :219-224
[9]   On the evolution of flow stress during constrained groove pressing of pure copper sheet [J].
Hosseini, E. ;
Kazeminezhad, M. ;
Mani, A. ;
Rafizadeh, E. .
COMPUTATIONAL MATERIALS SCIENCE, 2009, 45 (04) :855-859
[10]   Microstructures and dislocation configurations in nanostructured Cu processed by repetitive corrugation and straightening [J].
Huang, JY ;
Zhu, YT ;
Jiang, H ;
Lowe, TC .
ACTA MATERIALIA, 2001, 49 (09) :1497-1505
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