Mechanical behavior of nanocrys.talline copper

被引：101

作者：

Guduru, Ramesh K. ^{[1
]}

Murty, K. Linga ^{[1
]}

Youssef, Khaled M. ^{[1
]}

Scattergood, Ronald O. ^{[1
]}

Koch, Carl C. ^{[1
]}

机构：

[1] NC State Univ, Dept Mat Sci & Engn, Raleigh, NC 27609 USA

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2007年 / 463卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

nanocrystalline materials; copper; mechanical behavior; strain rate sensitivity; ductility; activation volume;

D O I：

10.1016/j.msea.2006.07.165

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The mechanical behavior of nanocrystalline materials has been studied extensively for the past few years. Recent studies on artifact-free materials with nanosize grains less than 100 nm have been very fruitful. These nanograined metals have exhibited very high strengths with reasonably good ductility. While there have been a large number of studies on hardness and strength characteristics, studies on strain rate sensitivity (SRS) are very limited. We describe here some of our recent work in characterizing SRS as well as activation volumes of nanograined copper using different testing procedures. These tests have been carried out under iso-strain rate and iso-structural conditions. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：14 / 21

页数：8

共 54 条

[21]

KOCKS UF, 1975, THERMODYNAMICS KINET, P255

[22] Mechanical behavior of nanocrystalline metals and alloys [J].

Kumar, KS ;

Van Swygenhoven, H ;

Suresh, S .

ACTA MATERIALIA, 2003, 51 (19) :5743-5774

[23] Microsample tensile testing of nanocrystalline metals [J].

Legros, M ;

Elliott, BR ;

Rittner, MN ;

Weertman, JR ;

Hemker, KJ .

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 2000, 80 (04) :1017-1026

[24] Nano-sized twins induce high rate sensitivity of flow stress in pure copper [J].

Lu, L ;

Schwaiger, R ;

Shan, ZW ;

Dao, M ;

Lu, K ;

Suresh, S .

ACTA MATERIALIA, 2005, 53 (07) :2169-2179

[25] Cold rolling of bulk nanocrystalline copper [J].

Lu, L ;

Sui, ML ;

Lu, K .

ACTA MATERIALIA, 2001, 49 (19) :4127-4134

[26] High-tensile ductility in nanocrystalline copper [J].

Lu, L ;

Wang, LB ;

Ding, BZ ;

Lu, K .

JOURNAL OF MATERIALS RESEARCH, 2000, 15 (02) :270-273

[27] Superplastic extensibility of nanocrystalline copper at room temperature [J].

Lu, L ;

Sui, ML ;

Lu, K .

SCIENCE, 2000, 287 (5457) :1463-1466

[28] Mechanical properties in tension of mechanically attrited nanocrystalline iron by the use of the miniaturized disk bend test [J].

Malow, TR ;

Koch, CC .

ACTA MATERIALIA, 1998, 46 (18) :6459-6473

[29] Low-temperature superplasticity in nanostructured nickel and metal alloys [J].

McFadden, SX ;

Mishra, RS ;

Valiev, RZ ;

Zhilyaev, AP ;

Mukherjee, AK .

NATURE, 1999, 398 (6729) :684-686

[30]

MEYERS MA, 1984, MECH BEHAV MAT, P585

← 1 2 3 4 5 6 →