Effect of V Addition on Microstructure and Properties of Cu-1.6Ni-1.2Co-0.65Si Alloys
| Autor: | Fangxin Yu, Jinfeng Zou, Jian Xie, Jianyi Cheng, Guangbo Feng |
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| Rok vydání: | 2019 |
| Předmět: |
lcsh:TN1-997
Materials science microstructure Alloy 02 engineering and technology engineering.material 01 natural sciences law.invention Optical microscope law Electrical resistivity and conductivity 0103 physical sciences Ultimate tensile strength General Materials Science Composite material lcsh:Mining engineering. Metallurgy Tensile testing Grain boundary strengthening precipitate 010302 applied physics property Precipitation (chemistry) aging Metals and Alloys 021001 nanoscience & nanotechnology Microstructure engineering Cu-Ni-Co-Si alloy 0210 nano-technology |
| Zdroj: | Metals, Vol 9, Iss 6, p 679 (2019) Metals Volume 9 Issue 6 |
| ISSN: | 2075-4701 |
| DOI: | 10.3390/met9060679 |
| Popis: | To obtain high strength and high electrical conductivity at the same time, the microstructure and properties of 0.2 wt.% V-added, 0.1 wt.% V-added and V-free Cu-1.6Ni-1.2Co-0.65Si(-V) alloys were investigated. We examined with electrical conductivity and hardness measurements, tensile test, optical microscope and transmission electron microscope (TEM). The results show that Cu-1.6Ni-1.2Co-0.65Si-0.1V alloy obtains excellent combination properties: electrical conductivity is 46.12% IACS, hardness is 293.88 Hv, and tensile strength is 782 MPa, which are produced by 65% cold rolling + aging at 500 ° C for 480 min. The addition of vanadium (V) can accelerate the precipitation of solute atoms from the copper matrix, improve the hardness and electrical conductivity of Cu-1.6Ni-1.2Co-0.65Si alloys, and greatly accelerated the aging response. &delta (Co,Ni)2Si and &beta Ni3Si phases are detected in Cu-1.6Ni-1.2Co-0.65Si-0.1V alloy. The Orowan mechanism and grain boundary strengthening play a major role in the yield strength strengthening due to &delta (Co,Ni)2Si phase. |
| Databáze: | OpenAIRE |
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