Low-cycle bending fatigue and electrical conductivity of high-strength Cu/Nb nanocomposite wires

被引：11

作者：

Rozhnov, A. B. ^{[1
]}

Pantsyrny, V., I ^{[2
]}

Kraynev, A., V ^{[1
]}

Rogachev, S. O. ^{[1
]}

Nikulin, S. A. ^{[1
]}

Khlebova, N. E. ^{[2
]}

Polikarpova, M., V ^{[3
]}

Zadorozhnyy, M. Yu ^{[1
]}

机构：

[1] Natl Univ Sci & Technol MISIS, 4 Leninsky Pr, Moscow 119049, Russia

[2] Res & Prod Co NANOELECTRO, 5a Rogova St, Moscow 123060, Russia

[3] AA Bochvar High Technol Sci Res Inst Inorgan Mat, 5a Rogova St, Moscow 123060, Russia

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2019年 / 128卷

关键词：

Metal-matrix composites (MMCs); Low-cycle fatigue; Dynamic mechanical analyzer; Fractography; Electrical conductivity; IN-SITU; CU-FE; MICROSTRUCTURE; COMPOSITE; DEFORMATION; RESISTIVITY; EVOLUTION; HARDNESS; ALLOYS;

D O I：

10.1016/j.ijfatigue.2019.105188

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The comparative low-cycle fatigue tests of the Cu/Nb nanocomposite wires obtained by the "melt-and-deform" method and pure copper samples were carried out using a dynamic mechanical analyzer (DMA). The fatigue tests were carried out using transverse bending scheme. It has been established that the fatigue fracture resistance characteristics of the Cu/Nb composites significantly higher as compared to that of pure copper samples. It has been found that the fatigue crack propagation in the Cu/Nb composites occurs at two scale levels. The effect of fatigue damage accumulation on the change in the electrical resistance of the Cu/Nb composites was studied.

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