Ultratough nanocrystalline copper with a narrow grain size distribution

被引：149

作者：

Youssef, KM ^{[1
]}

Scattergood, RO ^{[1
]}

Murty, KL ^{[1
]}

Koch, CC ^{[1
]}

机构：

[1] N Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA

来源：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 06期

关键词：

D O I：

10.1063/1.1779342

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report a unique way of using mechanical milling/in situ consolidation at both liquid-nitrogen and room temperature to produce artifact-free nanocrystalline Cu (23 nm) with a narrow grain size distribution. This nanocrystalline Cu exhibits an extraordinarily high yield strength (770 MPa), as predicted from a Hall-Petch extrapolation, along with good ductility (comparable with similar to30% uniform tensile elongation). Possible factors leading to this excellent optimization of strength and ductility are discussed. (C) 2004 American Institute of Physics.

引用

页码：929 / 931

页数：3

共 28 条

[1] Microstructure and mechanical behavior of nanocrystalline metals [J].

Agnew, SR ;

Elliott, BR ;

Youngdahl, CJ ;

Hemker, KJ ;

Weertman, JR .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2000, 285 (1-2) :391-396

[2] Mechanical properties of nanocrystalline nickel produced by electrodeposition [J].

Ebrahimi, F ;

Bourne, GR ;

Kelly, MS ;

Matthews, TE .

NANOSTRUCTURED MATERIALS, 1999, 11 (03) :343-350

[3] THE STUDY OF GRAIN-SIZE DEPENDENCE OF YIELD STRESS OF COPPER FOR A WIDE GRAIN-SIZE RANGE [J].

GERTSMAN, VY ;

HOFFMANN, M ;

GLEITER, H ;

BIRRINGER, R .

ACTA METALLURGICA ET MATERIALIA, 1994, 42 (10) :3539-3544

[4] DEFORMATION TWINNING IN AL-4.8 WT-PERCENT MG [J].

GRAY, GT .

ACTA METALLURGICA, 1988, 36 (07) :1745-1754

[5]

GUNTHER B, 1990, MATER RES SOC SYMP P, V195, P611, DOI 10.1557/PROC-195-611

[6] BEND TESTING FOR MINIATURE DISKS [J].

HUANG, FH ;

HAMILTON, ML ;

WIRE, GL .

NUCLEAR TECHNOLOGY, 1982, 57 (02) :234-242

[7] High strength nanocrystalline cobalt with high tensile ductility [J].

Karimpoor, AA ;

Erb, U ;

Aust, KT ;

Palumbo, G .

SCRIPTA MATERIALIA, 2003, 49 (07) :651-656

[8]

Koch C.C., 2003, JMNM, V18, P9, DOI [10.4028/www.scientific.net/jmnm.18.9, DOI 10.4028/WWW.SCIENTIFIC.NET/JMNM.18.9]

[9] Ductility of nanostructured materials [J].

Koch, CC ;

Morris, DG ;

Lu, K ;

Inoue, A .

MRS BULLETIN, 1999, 24 (02) :54-58

[10] Optimization of strength and ductility in nanocrystalline and ultrafine grained metals [J].

Koch, CC .

SCRIPTA MATERIALIA, 2003, 49 (07) :657-662

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