TY - JOUR
T1 - Cu-Nb-C-Nb多芯复合线材的制备及表征
AU - Wang, Pengfei
AU - Zhang, Pingxiang
AU - Liang, Ming
AU - Jin, Lihua
AU - Xu, Xiaoyan
AU - Li, Chengshan
AU - Li, Jinshan
N1 - Publisher Copyright:
© 2019, Science Press. All right reserved.
PY - 2019/3/1
Y1 - 2019/3/1
N2 - Three kinds of multi-core composite wires were prepared by powder casting technology combined with bundling and drawing process, including graphene-coated niobium powder reinforced Cu-Nb (3#), grapheme and niobium powder reinforced Cu-Nb (4#), and pure niobium powder reinforced Cu-Nb (5#). It is found that the intensity of Nb (110) diffraction peak is obviously enhanced after 750℃/60 h heat treatment. The analyses on the microstructure and energy spectrum (EDS) show that the high temperature heat treatment is favorable for the slight diffusion between the Cu/Nb interface, increasing the bonding strength of interface; plasticity and toughness are also improved greatly. The results show that the conductivity of Cu-Nb-C-Nb wire with graphene-coated niobium powder is better than that of the other two kinds of wires. Finally, plastic deformation mechanism and micro-mechanism of performance change of the three different materials were analyzed. An idea of further optimization of the process is put forward, which opens up a new direction for the preparation of high strength and high conductivity multi-element composite wires.
AB - Three kinds of multi-core composite wires were prepared by powder casting technology combined with bundling and drawing process, including graphene-coated niobium powder reinforced Cu-Nb (3#), grapheme and niobium powder reinforced Cu-Nb (4#), and pure niobium powder reinforced Cu-Nb (5#). It is found that the intensity of Nb (110) diffraction peak is obviously enhanced after 750℃/60 h heat treatment. The analyses on the microstructure and energy spectrum (EDS) show that the high temperature heat treatment is favorable for the slight diffusion between the Cu/Nb interface, increasing the bonding strength of interface; plasticity and toughness are also improved greatly. The results show that the conductivity of Cu-Nb-C-Nb wire with graphene-coated niobium powder is better than that of the other two kinds of wires. Finally, plastic deformation mechanism and micro-mechanism of performance change of the three different materials were analyzed. An idea of further optimization of the process is put forward, which opens up a new direction for the preparation of high strength and high conductivity multi-element composite wires.
KW - Bundling and drawing process
KW - Cu-Nb-C-Nb multi-core composite wire
KW - Graphene coated niobium powder
KW - Plastic deformation mechanism
UR - http://www.scopus.com/inward/record.url?scp=85068214209&partnerID=8YFLogxK
M3 - 文章
AN - SCOPUS:85068214209
SN - 1002-185X
VL - 48
SP - 936
EP - 940
JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
IS - 3
ER -