Hall-Petch effect and strain gradient effect in the torsion of thin gold wires

被引：37

作者：

Gan, Zhipeng ^{[1
]}

He, Yuming ^{[1
]}

Liu, Dabiao ^{[1
]}

Zhang, Bo ^{[1
]}

Shen, Lei ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Dept Mech, Wuhan 430074, Peoples R China

来源：

SCRIPTA MATERIALIA | 2014年 / 87卷

基金：

美国国家科学基金会;

关键词：

Torsion test; Hall-Petch effect; Strain gradient; Gold wires; Size effect; GRAIN-SIZE; PLASTICITY; SCALE; METAL;

D O I：

10.1016/j.scriptamat.2014.05.011

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Gold wires with diameters of 20 and 50 mu m were annealed in the temperature range 330-750 degrees C to obtain different grain sizes. Torsion and tension experiments on these wires confirm that the Hall-Petch effect is stronger than the strain gradient effect in the small grain size region (below 5 mu m). With the grain size becomes larger, the strain gradient effect is evident. We find that these two mechanisms are synergistic, and this interaction strongly depends upon the grain size. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：41 / 44

页数：4

共 25 条

[1] 60 Years of Hall-Petch: Past to Present Nano-Scale Connections [J].

Armstrong, Ronald W. .

MATERIALS TRANSACTIONS, 2014, 55 (01) :2-12

[2] Overview no. 130 - Size effects in materials due to microstructural and dimensional constraints: A comparative review [J].

Arzt, E .

ACTA MATERIALIA, 1998, 46 (16) :5611-5626

[3] DEFORMATION OF PLASTICALLY NON-HOMOGENEOUS MATERIALS [J].

ASHBY, MF .

PHILOSOPHICAL MAGAZINE, 1970, 21 (170) :399-&

[4] What is behind the inverse Hall-Petch effect in nanocrystalline materials? [J].

Carlton, C. E. ;

Ferreira, P. J. .

ACTA MATERIALIA, 2007, 55 (11) :3749-3756

[5] Elastic Limit and Strain Hardening of Thin Wires in Torsion [J].

Dunstan, D. J. ;

Ehrler, B. ;

Bossis, R. ;

Joly, S. ;

P'ng, K. M. Y. ;

Bushby, A. J. .

PHYSICAL REVIEW LETTERS, 2009, 103 (15)

[6] Grain size and sample size interact to determine strength in a soft metal [J].

Ehrler, B. ;

Hou, X. D. ;

Zhu, T. T. ;

Png, K. M. Y. ;

Walker, C. J. ;

Bushby, A. J. ;

Dunstan, D. J. .

PHILOSOPHICAL MAGAZINE, 2008, 88 (25) :3043-3050

[7] A critical assessment of theories of strain gradient plasticity [J].

Evans, A. G. ;

Hutchinson, J. W. .

ACTA MATERIALIA, 2009, 57 (05) :1675-1688

[8] STRAIN GRADIENT PLASTICITY - THEORY AND EXPERIMENT [J].

FLECK, NA ;

MULLER, GM ;

ASHBY, MF ;

HUTCHINSON, JW .

ACTA METALLURGICA ET MATERIALIA, 1994, 42 (02) :475-487

[9] Strain gradient plasticity [J].

Fleck, NA ;

Hutchinson, JW .

ADVANCES IN APPLIED MECHANICS, VOL 33, 1997, 33 :295-361

[10]

Gersak J.K., 1998, INT J CLOTHING SCI T, V10, P244, DOI [10.1108/09556229810693654, DOI 10.1108/09556229810693654]

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