Microstructure evolution, hardening and thermal behavior of commercially pure copper subjected to torsion deformation

被引：26

作者：

Wang, Chengpeng ^{[1
,2
]}

Li, Fuguo ^{[1
]}

Li, Jinghui ^{[1
]}

Dong, Junzhe ^{[1
]}

Xue, Fengmei ^{[1
,2
]}

机构：

[1] Northwestern Polytech Univ, Sch Mat Sci & Engn, State Key Lab Solidificat Proc, Xian 710072, Peoples R China

[2] Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2014年 / 598卷

基金：

中国国家自然科学基金;

关键词：

Pure copper; Severe plastic deformation; Torsion; SEVERE PLASTIC-DEFORMATION; DISLOCATION-STRUCTURE; MECHANICAL-PROPERTIES; STRAIN; RECRYSTALLIZATION; CALORIMETRY; METALS; CU;

D O I：

10.1016/j.msea.2013.12.079

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Commercial pure copper was torsion-deformed under equivalent strains from 1 to 5 at ambient temperature. Microstructure evolution of torsion samples was characterized using metallographic observation on the longitudinal section parallel to the torsion axis and transverse section perpendicular to the torsion axis. Elongated ultrafine grained structure was observed on the edge area of the bar samples. The grain size decreased with increasing shear strain. While no obvious refinement was significantly improved on the central area. Transmission electron microscopy (TEM) observation showed that microstructure refinement correlated with the accumulation and rearrangement of dislocations. The results of Vickers hardness measurement indicated that the inhomogeneous hardness distribution on the transverse section of samples was similar to the counterpart of microstructure. The variations of hardness and microstructure both depended on the value of torsional simple shear depending on the radial positions of the samples. The hardening of torsional samples was mainly attributed to dislocation strengthening. Differential scanning calorimeter (DSC) results revealed that an exothermic peak occurs in the temperature range similar to 250-300 degrees C during the DSC scan of torsion samples. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：7 / 14

页数：8

共 50 条

[31] Influences of pre-torsion deformation on microstructure and mechanical properties of pure titanium subjected to subsequent tension deformation [J].

Jie LIU ;

Fuguo LI ;

Han CHEN .

Chinese Journal of Aeronautics , 2018, (04) :837-844

[32] The Effect of Reverse Strain on Microstructure and Strengthening of Copper Fabricated by Severe Plastic Deformation of Torsion Process [J].

Wang, Chengpeng ;

Li, Fuguo ;

Fan, Junkai ;

Liu, Juncheng .

MATERIALS SCIENCE-MEDZIAGOTYRA, 2018, 24 (03) :271-276

[33] Softening and Microstructure Evolution of Pure Copper Disks Processed by High Pressure Torsion [J].

Seyed Amin Hosseini Kahnooj ;

Majid Vaseghi ;

Mahmood Sameezadeh .

Metals and Materials International, 2022, 28 :2646-2651

[34] Structure and Hardening of Layered Steel/Copper/Steel Material Subjected to Co-Deformation by High-Pressure Torsion [J].

Rogachev, S. O. ;

Sundeev, R. V. ;

Kozlov, D. A. ;

Khalidova, D. V. .

PHYSICS OF METALS AND METALLOGRAPHY, 2019, 120 (02) :191-196

[35] Deformation Behavior and Microstructural Evolution of Ultrafine-Grained Commercially Pure Ti [J].

Liu, Xiaoyan ;

Zhao, Xicheng ;

Yang, Xirong ;

Xie, Chen .

ADVANCED ENGINEERING MATERIALS, 2014, 16 (04) :371-375

[36] EVOLUTION OF MICROSTRUCTURE OF COPPER AND ITS ALLOYS DURING SEVERE PLASTIC DEFORMATION PROCESS [J].

Volokitin, A. V. ;

Denissova, A. I. ;

Fedorova, T. D. ;

Lavrinuk, D. N. .

USPEKHI FIZIKI METALLOV-PROGRESS IN PHYSICS OF METALS, 2024, 25 (02) :294-319

[37] Deformation Behavior and Microstructure Evolution during Equal Channel Angular Pressing of Pure Aluminum [J].

Shubo Xu ;

Hanlin Wang ;

Peng Liu ;

Cainian Jing ;

Guocheng Ren .

Journal of Wuhan University of Technology-Mater. Sci. Ed., 2022, 37 :130-135

[38] Deformation behavior and microstructure evolution of graphene/copper laminated composites [J].

Zhang, Xiaohui ;

Liu, Yazhou ;

Zhang, Yi ;

Zhou, Meng ;

Geng, Yongfeng ;

Song, Xiaoguo ;

Xiong, Ding- Bang .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2024, 911

[39] Dynamic shear properties and microstructure evolution of commercially pure titanium with heterogeneous gradient microstructure [J].

Guo, Yansong ;

Jia, Bin ;

Fan, Hang ;

Zhou, Changqing ;

Gao, Tianze ;

Zhou, Qiang ;

Ran, Chun ;

Chen, Pengwan .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2023, 880

[40] Microstructure and Mechanical Properties of the Commercially Pure Copper Tube After Processing by Hydrostatic Tube Cyclic Expansion Extrusion (HTCEE) [J].

Savarabadi, M. Motallebi ;

Faraji, G. ;

Eftekhari, M. .

METALS AND MATERIALS INTERNATIONAL, 2021, 27 (06) :1686-1700

← 1 2 3 4 5 →