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Effects of Cr and Zr additions on microstructure and properties of Cu-Ni-Si alloys
Wang, W; Kang, HJ; Chen, ZN; Chen, ZJ; Zou, CL; Li, RG; Yin, GM; Wang, TM; Chen ZJ(陈中军)
2016
发表期刊MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
卷号673页码:378-390
文章类型期刊论文
摘要Cu-Ni-Si alloys are widely used for electrical applications owing to high strength and high electrical conductivity. In this work, the effects of Cr and Zr additions on microstructure and properties of Cu-Ni-Si alloys were investigated. The addition of Cr and Zr results in formation of Cr3Si and Ni2SiZr intermetallic compounds, respectively, thus increases the electrical conductivity of Cu-Ni-Si alloy and refines the microstructure. Microstructure analysis confirms the presence of delta-Ni2Si precipitates, which strengthens the alloy through Orowan mechanism. Alloying with Zr element deteriorates the mechanical property of Cu-Ni-Si alloy, whereas in the presence of Cr, to the contrary, the ultimate tensile strength is increased, whether Zr is incorporated or not. Moreover, the addition of Zr can decrease the stacking fault energy (SFE) and promote formation of deformation twins. The best integrated, performance is obtained through co-addition of Cr and Zr elements. The ultimate strength, elongation and electrical conductivity are 706 MPa, 9.5% and 48.2% IACS, respectively. The precipitation kinetics was discussed in terms of Avrami equation and the activation energy of Ni2Si precipitation was obtained. The calculated activation energies of precipitation are 105, 89, 115 and 111 kJ/mol for Cu-Ni-Si, Cu-Ni-Si-Zr, Cu-Ni-Si-Cr and Cu-Ni-Si-Cr-Zr alloy, respectively. (C) 2016 Elsevier B.V. All rights reserved.
关键词Cu-Ni-Si alloy High strength High electrical conductivity Ageing Precipitation kinetics
DOI10.1016/j.msea.2016.07.021
关键词[WOS]ELECTRICAL-CONDUCTIVITY ; MECHANICAL-PROPERTIES ; SYSTEM ALLOYS ; HIGH-STRENGTH ; MG ALLOY ; FATIGUE ; TI
语种英语
WOS类目Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号WOS:000382410000043
引用统计
被引频次:9[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/260281
专题多学科研究中心
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714
Wang, W,Kang, HJ,Chen, ZN,et al. Effects of Cr and Zr additions on microstructure and properties of Cu-Ni-Si alloys[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2016,673:378-390.
APA Wang, W.,Kang, HJ.,Chen, ZN.,Chen, ZJ.,Zou, CL.,...&陈中军.(2016).Effects of Cr and Zr additions on microstructure and properties of Cu-Ni-Si alloys.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,673,378-390.
MLA Wang, W,et al."Effects of Cr and Zr additions on microstructure and properties of Cu-Ni-Si alloys".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 673(2016):378-390.
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