STUDY OF THE STRENGTHENING AND TOUGHENING MECHANISM FOR SINGLE-CRYSTAL COPPER DURING EQUAL-CHANNEL ANGULAR PRESSING BY ROUTE A

doi:10.17222/mit.2018.178

	STUDY OF THE STRENGTHENING AND TOUGHENING MECHANISM FOR SINGLE-CRYSTAL COPPER DURING EQUAL-CHANNEL ANGULAR PRESSING BY ROUTE A
	Guo, Ting-Biao1,2 ; Wei, Shi-Ru 1; Li, Qi 1; Wang, Chen 1; Jia, Zhi1,2 ; Hu, Yong1,2 ; Tang, Xing-Chang1,2
	2019
发表期刊	MATERIALI IN TEHNOLOGIJE
ISSN	1580-2949
卷号	53 期号:2 页码:269-275
摘要	Single-crystal copper has received more and more attention in the important areas of the national economy due to its good electrical and thermal conductivity and elongation. Its low strength limits its application, and so strengthening methods for single-crystal copper are of great concern. Therefore, we study the strengthening and toughening mechanisms of single-crystal copper by equal-channel angular pressing (ECAP). The single-crystal copper was processed by ECAP using route A with a die (Phi = 105 degrees, Psi = 30 degrees). The microstructure and texture evolution were investigated by EBSD, XRD and SEM. The tensile properties were also tested. The results show that the ECAP method can improve the strength of materials without decreasing the conductivity. Under low strain, the crystal orientation still maintains the original orientation characteristics. As the strain increases, it forms numerous deformation bands with the same direction as the matrix. The texture-transformation process is {111}<112> -> {111}<110> ->{110}<112> and {124}<211>. After 5 passes, the tensile strength increased from 168 MPa to 435 MPa, and the elongation declined from 63 % to 27.8 %. After 16 passes, the hardness increased from 60.4 HV to 125 HV, while the conductivity remained at a high level of 95 % IACS.
关键词	single-crystal copper equal-channel angular pressing texture mechanical properties
DOI	10.17222/mit.2018.178
收录类别	SCI ; SCIE
语种	英语
资助项目	National Natural Science Foundation of China[51261016] ; Natural Science Foundation of Gansu Province, China[1212RJZA027]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000467022300018
出版者	INST ZA KOVINSKE MATERIALE I IN TEHNOLOGIE
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/32181
专题	材料科学与工程学院省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	Guo, Ting-Biao
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China; 2.Lanzhou Univ Technol, Key Lab Nonferrous Met Alloys & Proc, Minist Educ, Lanzhou 730050, Gansu, Peoples R China
第一作者单位	省部共建有色金属先进加工与再利用国家重点实验室; 兰州理工大学
通讯作者单位	省部共建有色金属先进加工与再利用国家重点实验室; 兰州理工大学
第一作者的第一单位	省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式 GB/T 7714	Guo, Ting-Biao,Wei, Shi-Ru,Li, Qi,et al. STUDY OF THE STRENGTHENING AND TOUGHENING MECHANISM FOR SINGLE-CRYSTAL COPPER DURING EQUAL-CHANNEL ANGULAR PRESSING BY ROUTE A[J]. MATERIALI IN TEHNOLOGIJE,2019,53(2):269-275.
APA	Guo, Ting-Biao.,Wei, Shi-Ru.,Li, Qi.,Wang, Chen.,Jia, Zhi.,...&Tang, Xing-Chang.(2019).STUDY OF THE STRENGTHENING AND TOUGHENING MECHANISM FOR SINGLE-CRYSTAL COPPER DURING EQUAL-CHANNEL ANGULAR PRESSING BY ROUTE A.MATERIALI IN TEHNOLOGIJE,53(2),269-275.
MLA	Guo, Ting-Biao,et al."STUDY OF THE STRENGTHENING AND TOUGHENING MECHANISM FOR SINGLE-CRYSTAL COPPER DURING EQUAL-CHANNEL ANGULAR PRESSING BY ROUTE A".MATERIALI IN TEHNOLOGIJE 53.2(2019):269-275.