Deformation behavior of Cu-based nanocomposite processed by severe plastic deformation

被引：74

作者：

Islamgaliev, RK ^{[1
]}

Buchgraber, W

Kolobov, YR

Amirkhanov, NM

Sergueeva, AV

Ivanov, KV

Grabovetskaya, GP

机构：

[1] Russian Acad Sci, Inst Mech, Ufa, Russia

[2] Austrian Res Ctr Seibersdorf, A-2444 Seibersdorf, Austria

[3] RAS, Inst Strength Phys & Mat Sci, Tomsk, Russia

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

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2001年 / 319卷

关键词：

Cu based composite; severe plastic torsion straining; nanostructure; deformation behavior; electrical resistivity;

D O I：

10.1016/S0921-5093(01)01073-5

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

High pressure torsion (HPT) was used in the present work to produce the metal matrix nanocomposite Cu + 0.5 wt.% Al2O3. The mean grain size and root-mean-squared strain were studied by transmission electron microscopy (TEM) and X-ray diffraction (XRD). It is shown that high ultimate strength (680 MPa) and microhardness (2300 MPa), as well as high thermal stability and electrical conductivity are features of the nanocomposite samples. Decrease of creep rate by one order of magnitude and increase of time to failure by a factor of 4-5 is revealed in the nanocomposite compared with the extruded sample. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：872 / 876

页数：5

共 6 条

[1] Microstructures and properties of nanocomposites obtained through SPTS consolidation of powders [J].

Alexandrov, IV ;

Zhu, YT ;

Lowe, TC ;

Islamgaliev, RK ;

Valiev, RZ .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1998, 29 (09) :2253-2260

[2]

FROST MFA, 1988, DEFORMATION MECH MAP

[3]

GAROFALO F, 1967, FUNDAMENTALS CREEP C

[4] ON THE ENHANCED GRAIN-GROWTH IN ULTRAFINE GRAINED METALS [J].

LIAN, JS ;

VALIEV, RZ ;

BAUDELET, B .

ACTA METALLURGICA ET MATERIALIA, 1995, 43 (11) :4165-4170

[5]

Schilling W. F., 1973, POWDER METALL INT, V5, P117

[6] Bulk nanostructured materials from severe plastic deformation [J].

Valiev, RZ ;

Islamgaliev, RK ;

Alexandrov, IV .

PROGRESS IN MATERIALS SCIENCE, 2000, 45 (02) :103-189

← 1 →