An abnormal strain rate effect on tensile behavior in nanocrystalline copper

被引：194

作者：

Lu, L

Li, SX

Lu, K ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

[2] Chinese Acad Sci, IMR, RSA, State Key Lab Rapidly Solidified Non Equilibrium, Shenyang 110016, Peoples R China

[3] Chinese Acad Sci, IMR, State Key Lab Fatigue & Fracture Mat, Shenyang 110016, Peoples R China

来源：

SCRIPTA MATERIALIA | 2001年 / 45卷 / 10期

基金：

中国国家自然科学基金;

关键词：

nanocrystalline material; copper; mechanical property; strain rate effect;

D O I：

10.1016/S1359-6462(01)01138-1

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

An abnormal strain rate effect on the tensile ductility was observed in an electrodeposited nanocrystalline (nc) Cu sample, in which the fracture strain increases significantly at higher strain rates (from 6 x 10(-5) to 1.8 x 10(3) s(-1)). This phenomenon might be associated with a different fracture mechanism in the nc Cu sample compared with that for conventional coarse-grained materials. (C) 2001 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：1163 / 1169

页数：7

共 20 条

[1] DISLOCATION MECHANICS ASPECTS OF PLASTIC INSTABILITY AND SHEAR BANDING
ARMSTRONG, RW
ZERILLI, FJ
[J]. MECHANICS OF MATERIALS, 1994, 17 (2-3) : 319 - 327
[2] Interface controlled diffusional creep of nanocrystalline pure copper
Cai, B
Kong, QP
Lu, L
Lu, K
[J]. SCRIPTA MATERIALIA, 1999, 41 (07) : 755 - 759
[3] ON THE VALIDITY OF THE HALL-PETCH RELATIONSHIP IN NANOCRYSTALLINE MATERIALS
CHOKSHI, AH
ROSEN, A
KARCH, J
GLEITER, H
[J]. SCRIPTA METALLURGICA, 1989, 23 (10): : 1679 - 1683
[4] FLOW-STRESS OF OFE COPPER AT STRAIN RATES FROM 10-3 TO 104S-1 - GRAIN-SIZE EFFECTS AND COMPARISON TO THE MECHANICAL THRESHOLD STRESS MODEL
GOURDIN, WH
LASSILA, DH
[J]. ACTA METALLURGICA ET MATERIALIA, 1991, 39 (10): : 2337 - 2348
[5] HERTZIAN INDENTATION OF ULTRA-FINE GRAIN-SIZE WC-CO COMPOSITES
LAUGIER, MT
[J]. JOURNAL OF MATERIALS SCIENCE LETTERS, 1987, 6 (07) : 841 - 843
[6] FRACTOGRAPHIC STUDY OF SINTERED NANOPHASE TIO2
LI, ZQ
RAMASAMY, S
HAHN, H
SIEGEL, RW
[J]. MATERIALS LETTERS, 1988, 6 (07) : 195 - 201
[7] High-tensile ductility in nanocrystalline copper
Lu, L
Wang, LB
Ding, BZ
Lu, K
[J]. JOURNAL OF MATERIALS RESEARCH, 2000, 15 (02) : 270 - 273
[8] Superplastic extensibility of nanocrystalline copper at room temperature
Lu, L
Sui, ML
Lu, K
[J]. SCIENCE, 2000, 287 (5457) : 1463 - 1466
[9] MECHANICAL-PROPERTIES OF NANOPHASE TIO2 AS DETERMINED BY NANOINDENTATION
MAYO, MJ
SIEGEL, RW
NARAYANASAMY, A
NIX, WD
[J]. JOURNAL OF MATERIALS RESEARCH, 1990, 5 (05) : 1073 - 1082
[10] NANOINDENTATION OF NANOCRYSTALLINE ZNO
MAYO, MJ
SIEGEL, RW
LIAO, YX
NIX, WD
[J]. JOURNAL OF MATERIALS RESEARCH, 1992, 7 (04) : 973 - 979

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