Microstructures and properties of nanocomposites obtained through SPTS consolidation of powders

被引：138

作者：

Alexandrov, IV ^{[1
]}

Zhu, YT

Lowe, TC

Islamgaliev, RK

Valiev, RZ

机构：

[1] Ufa State Aviat Tech Univ, Inst Phys Adv Mat, Ufa 450000, Russia

[2] Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1998年 / 29卷 / 09期

关键词：

D O I：

10.1007/s11661-998-0103-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructures and properties of copper- and aluminum-based nanocomposites processed through severe plastic torsional straining (SPTS) consolidation of metallic micrometer powders and ceramic nanopowders were investigated by transmission electron microscopy (TEM), X-ray diffraction (XRD), microhardness and electrical resistivity measurements, and mechanical tests. It was shown that the SPTS consolidation of powders is an effective technique for fabricating metal-ceramic nanocomposites with a high density, ultrafine grain size, and high strength. Copper samples processed under a high pressure of 6 GPa exhibited high failure strength and strain as well as unusual strain hardening. Superplastic-like behavior was found in Al-Al2O3 nanocomposite samples.

引用

页码：2253 / 2260

页数：8

共 52 条

[1]

ALEXANDROV IV, IN PRESS NANOSTR MAT

[2] PROCESSING OF NANO-GRAINED MATERIALS [J].

AVERBACK, RS ;

HOFLER, HJ ;

TAO, R .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1993, 166 (1-2) :169-177

[3] DEVIATIONS FROM HALL-PETCH BEHAVIOR IN AS-PREPARED NANOCRYSTALLINE NICKEL [J].

ELSHERIK, AM ;

ERB, U ;

PALUMBO, G ;

AUST, KT .

SCRIPTA METALLURGICA ET MATERIALIA, 1992, 27 (09) :1185-1188

[4] Microstructure and properties of copper and aluminum alloy 3003 heavily worked by equal channel angular extrusion [J].

Ferrasse, S ;

Segal, VM ;

Hartwig, KT ;

Goforth, RE .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1997, 28 (04) :1047-1057

[5] GRAIN-SIZE DEPENDENT HARDENING AND SOFTENING OF NANOCRYSTALLINE CU AND PD [J].

FOUGERE, GE ;

WEERTMAN, JR ;

SIEGEL, RW ;

KIM, S .

SCRIPTA METALLURGICA ET MATERIALIA, 1992, 26 (12) :1879-1883

[6] On the hardening and softening of nanocrystalline materials [J].

Fougere, G.E. ;

Weertman, J.R. ;

Siegel, R.W. .

Nanostructured Materials, 1993, 3 (1-6)

[7] Microhardness measurements and the Hall-Petch relationship in an Al-Mg alloy with submicrometer grain size [J].

Furukawa, M ;

Horita, Z ;

Nemoto, M ;

Valiev, RZ ;

Langdon, TG .

ACTA MATERIALIA, 1996, 44 (11) :4619-4629

[8] Structural evolution and the Hall-Petch relationship in an Al-Mg-Li-Zr alloy with ultra-fine grain size [J].

Furukawa, M ;

Iwahashi, Y ;

Horita, Z ;

Nemoto, M ;

Tsenev, NK ;

Valiev, RZ ;

Langdon, TG .

ACTA MATERIALIA, 1997, 45 (11) :4751-4757

[9] ON THE ROOM-TEMPERATURE GRAIN-GROWTH IN NANOCRYSTALLINE COPPER [J].

GERTSMAN, VY ;

BIRRINGER, R .

SCRIPTA METALLURGICA ET MATERIALIA, 1994, 30 (05) :577-581

[10] ON THE STRUCTURE AND STRENGTH OF ULTRAFINE-GRAINED COPPER PRODUCED BY SEVERE PLASTIC-DEFORMATION [J].

GERTSMAN, VY ;

BIRRINGER, R ;

VALIEV, RZ ;

GLEITER, H .

SCRIPTA METALLURGICA ET MATERIALIA, 1994, 30 (02) :229-234

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