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题名:
Effect of direct current pulses on mechanical and electrical properties of aged Cu-Cr-Zr alloys
作者: Wang, W; Li, RG; Zou, CL; Chen, ZN; Wen, W; Wang, TM; Yin, GM
刊名: MATERIALS & DESIGN
出版日期: 2016
卷号: 92, 期号:-, 页码:135—142
关键词: SEVERE PLASTIC-DEFORMATION ; THERMOMECHANICAL TREATMENT ; CONTACT WIRE ; MICROSTRUCTURE ; PRECIPITATION ; STRENGTH ; BEHAVIOR ; RECRYSTALLIZATION ; METALS ; COPPER
DOI: 10.1016/j.matdes.2015.12.013
通讯作者: Wang, TM (reprint author), Dalian Univ Technol, Sch Mat Sci & Engn, Key Lab Solidificat Control & Digital Preparat Te, 2 Linggong Rd, Dalian 116024, Liaoning, Peoples R China.
文章类型: 期刊文献
英文摘要: In this work, the response of Cu-Cr-Zr alloys to aging under direct current (DC) pulses was investigated. The results demonstrated that well-balanced mechanical properties and electrical conductivity can be achieved in case the alloys were properly treated. The aging behavior of Cu-Cr-Zr alloys is sensitive to DC pulses in the temperature range between 400 and 450 degrees C, whereas at temperatures out of this range, DC pulses have minor influences. The hardness of aged Cu-Cr-Zr alloy is increased by DC pulses while the electrical conductivity is slightly decreased. The peak hardness is increased by 10 HV after aging at 400 C for 1 h. With the imposition of DC pulses, the precipitate size of Cr rich precipitates in aged Cu-Cr-Zr alloys is reduced from 238 nm to 178 nm, exhibiting stronger Orowan strengthening. After aging at 450 degrees C for 2 h with DC pulses, the Cu-Cr-Zr alloy has an average tensile strength of 609 MPa, elongation of 12.8%, and electrical conductivity of 77.6% IACS. A retarding effect of DC pulses on precipitation process is confirmed by synchrotron X-ray diffraction analysis, which is responsible for the slight decrease in electrical conductivity. (C) 2015 Elsevier Ltd. All rights reserved.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000369191900018
ISSN号: 0261-3069
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/25695
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
Wang, W,Li, RG,Zou, CL,et al. Effect of direct current pulses on mechanical and electrical properties of aged Cu-Cr-Zr alloys[J]. MATERIALS & DESIGN,2016-01-01,92(-):135—142.
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