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

[21] Structural and Hardness Evolution of Pure Magnesium Subjected to High Pressure Torsion [J].

Gu Ji ;

Yang Xiaohui ;

Ni Song ;

Song Min .

RARE METAL MATERIALS AND ENGINEERING, 2018, 47 (05) :1347-1351

[22] Temperature-Dependent Compressive Deformation Behavior of Commercially Pure Iron Processed by ECAP [J].

Yan, Ying ;

Qi, Yue ;

Jiang, Qing-Wei ;

Li, Xiao-Wu .

ACTA METALLURGICA SINICA-ENGLISH LETTERS, 2015, 28 (05) :531-541

[23] Influence of Deformation Stress Triaxiality on Microstructure and Microhardness of Pure Copper Processed by Simultaneous Torsion and Tension [J].

Chen Zhao ;

Fuguo Li ;

Jinghui Li ;

Xinkai Ma ;

Qiong Wan ;

Tengteng Tong .

Journal of Materials Engineering and Performance, 2017, 26 :4104-4111

[24] Microstructure and microtexture in pure copper processed by high-pressure torsion [J].

Al-Fadhalah, Khaled J. ;

Alhajeri, Saleh N. ;

Almazrouee, Abdulla I. ;

Langdon, Terence G. .

JOURNAL OF MATERIALS SCIENCE, 2013, 48 (13) :4563-4572

[25] Effects of microrolling parameters on the microstructure and deformation behavior of pure copper [J].

Jing, Yi ;

Zhang, Hong-mei ;

Wu, Hao ;

Li, Lian-Jie ;

Jia, Hong-bin ;

Jiang, Zheng-yi .

INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS, 2018, 25 (01) :45-52

[26] Effects of microrolling parameters on the microstructure and deformation behavior of pure copper [J].

Yi Jing ;

Hong-mei Zhang ;

Hao Wu ;

Lian-jie Li ;

Hong-bin Jia ;

Zheng-yi Jiang .

International Journal of Minerals, Metallurgy, and Materials, 2018, 25 :45-52

[27] Effects of microrolling parameters on the microstructure and deformation behavior of pure copper [J].

Yi Jing ;

Hongmei Zhang ;

Hao Wu ;

Lianjie Li ;

Hongbin Jia ;

Zhengyi Jiang .

InternationalJournalofMineralsMetallurgyandMaterials, 2018, 25 (01) :45-52

[28] Microstructure evolution and tribological behavior of additively manufactured pure copper subjected to ultrasonic flat rolling process [J].

Zhou, Changhao ;

Liu, Dan ;

Xu, Xingchen ;

Yuan, Chun ;

Xu, Guang ;

Wan, Mingpan ;

Huang, Chaowen .

TRIBOLOGY INTERNATIONAL, 2025, 212

[29] Experimental study on pure titanium subjected to different combined tension and torsion deformation processes [J].

Chen, Han ;

Li, Fuguo ;

Zhou, Shunshun ;

Li, Jinghui ;

Zhao, Chen ;

Wan, Qiong .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2017, 680 :278-290

[30] Evidence for an early softening behavior in pure copper processed by high-pressure torsion [J].

Xu, Jie ;

Li, Jianwei ;

Wang, Chuan Ting ;

Shan, Debin ;

Guo, Bin ;

Langdon, Terence G. .

JOURNAL OF MATERIALS SCIENCE, 2016, 51 (04) :1923-1930

← 1 2 3 4 5 →