Next Article in Journal
Alumina-Doped Zirconia Submicro-Particles: Synthesis, Thermal Stability, and Microstructural Characterization
Previous Article in Journal
Comparative Study of the Adsorption of Acid Blue 40 on Polyaniline, Magnetic Oxide and Their Composites: Synthesis, Characterization and Application
Open AccessArticle

Influence of the Ni/Co Mass Ratio on the Microstructure and Properties of Quaternary Cu-Ni-Co-Si Alloys

by 1,2,†, 1,†, 1,*, 1,*, 1 and 2
1
State Key laboratory of Nonferrous Metals and Processes, GRIMAT Engineering Institute Co., Ltd., Beijing 101417, China
2
School of Materials Science and Engineering, University of Science & Technology Beijing, Beijing 100083, China
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Materials 2019, 12(18), 2855; https://doi.org/10.3390/ma12182855
Received: 21 August 2019 / Revised: 1 September 2019 / Accepted: 3 September 2019 / Published: 4 September 2019
The properties and microstructural evolution of quaternary Cu-Ni-Co-Si alloys with different Ni/Co mass ratios are investigated systematically. These alloys exhibit higher mechanical properties when the Ni/Co mass ratio is 1.12-1.95 (NC-4-NC-5) and show excellent electrical conductivity when the Ni/Co mass ratio is 0.05-0.5 (NC-1-NC-3). With an increase in the Ni/Co ratio, the dimension of precipitated phase continues to increase and the grain size also visibly grows and coarsens. At the same time, the precipitation process of the NC-5 alloy is the most adequate, resulting in the highest mechanical properties. In addition, the precipitated phase in the alloys was confirmed to be the (Ni, Co)2Si composite phase. The number of Ni2Si phases in the precipitated phase gradually increased, and the Ni atoms exhibited the strongest co-segregation alongside the increasing Ni/Co ratio. Compared with the alloy without a Co element, the addition of Co helped refine the grain size and accelerate the precipitation of the particle phase and purify solute atoms in the matrix, thereby simultaneously improving mechanical properties and conductivity. The present work provides a new method for the development of multicomponent Cu-Ni-Si-Co-X alloys with outstanding comprehensive performance. View Full-Text
Keywords: Cu-Ni-Co-Si alloy; Ni/Co mass ratio; physical properties; microstructure; atomic distribution Cu-Ni-Co-Si alloy; Ni/Co mass ratio; physical properties; microstructure; atomic distribution
Show Figures

Figure 1

MDPI and ACS Style

Li, J.; Huang, G.; Mi, X.; Peng, L.; Xie, H.; Kang, Y. Influence of the Ni/Co Mass Ratio on the Microstructure and Properties of Quaternary Cu-Ni-Co-Si Alloys. Materials 2019, 12, 2855. https://doi.org/10.3390/ma12182855

AMA Style

Li J, Huang G, Mi X, Peng L, Xie H, Kang Y. Influence of the Ni/Co Mass Ratio on the Microstructure and Properties of Quaternary Cu-Ni-Co-Si Alloys. Materials. 2019; 12(18):2855. https://doi.org/10.3390/ma12182855

Chicago/Turabian Style

Li, Jiang; Huang, Guojie; Mi, Xujun; Peng, Lijun; Xie, Haofeng; Kang, Yonglin. 2019. "Influence of the Ni/Co Mass Ratio on the Microstructure and Properties of Quaternary Cu-Ni-Co-Si Alloys" Materials 12, no. 18: 2855. https://doi.org/10.3390/ma12182855

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop