Elastic Limit and Strain Hardening of Thin Wires in Torsion

被引：97

作者：

Dunstan, D. J. ^{[1
,2
]}

Ehrler, B. ^{[1
,2
]}

Bossis, R. ^{[3
]}

Joly, S. ^{[4
]}

P'ng, K. M. Y. ^{[5
,6
]}

Bushby, A. J. ^{[5
,6
]}

机构：

[1] Queen Mary Univ London, Ctr Mat Res, London E1 4NS, England

[2] Queen Mary Univ London, Dept Phys, London E1 4NS, England

[3] Univ Nantes, Lab Genie Mat & Procedes Associes, Ecole Polytech, F-44306 Nantes, France

[4] CEFIPA Engn Sch, F-92220 Bagneux, France

[5] Queen Mary Univ London, Ctr Mat Res, Sch Mat Sci & Engn, London E1 4NS, England

[6] Queen Mary Univ London, Dept Mat, Sch Mat Sci & Engn, London E1 4NS, England

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 15期

基金：

英国工程与自然科学研究理事会;

关键词：

GRAIN-SIZE; GRADIENT PLASTICITY; FLOW-STRESS; STRENGTH; DEFORMATION; RELAXATION; FILMS;

D O I：

10.1103/PhysRevLett.103.155501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A theory for the size effect in the strength of wires under torsion is reported and compared with data from thin copper wires. Critical thickness theory is solved rigorously and used to validate a useful approximation which is combined with slip-distance theory modified for a finite structure size. Experimental data with high accuracy around and above the elastic limit show excellent agreement with the theory. The results strongly imply that the physical principle is the constraint that size, whether grain size or structure size, puts on allowed dislocation curvature.

引用

页数：4

共 50 条

[1] AN INVESTIGATION OF ELASTIC-PLASTIC TORSION IN STRAIN HARDENING MATERIALS
Chattopadhyay, Somnath
[J]. PROCEEDINGS OF ASME 2021 INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION (IMECE2021), VOL 9, 2021,
[2] Nanomechanics of rhenium wires: Elastic modulus, yield strength and strain hardening
Philippe, L.
Wang, Z.
Peyrot, I.
Hassel, A. W.
Michler, J.
[J]. ACTA MATERIALIA, 2009, 57 (14) : 4032 - 4035
[3] On the allowance for strain hardening of material in the problem of elastic-plastic torsion
Sorolovsky, W
[J]. COMPTES RENDUS DE L ACADEMIE DES SCIENCES DE L URSS, 1942, 36 : 46 - 51
[4] Size effects on the plastic collapse limit load of thin foils in bending and thin wires in torsion
Polizzotto, Castrenze
[J]. EUROPEAN JOURNAL OF MECHANICS A-SOLIDS, 2011, 30 (06) : 854 - 864
[5] TORSION OF THIN-WALLED CLOSED CYLINDERS BEYOND THE ELASTIC LIMIT
HANDELMAN, GH
[J]. JOURNAL OF THE AERONAUTICAL SCIENCES, 1950, 17 (08): : 499 - &
[6] ELASTIC TORSION IN WIRES UNDER TENSION
ALLEN, M
SAXL, EJ
[J]. JOURNAL OF APPLIED PHYSICS, 1969, 40 (06) : 2505 - &
[7] ON THE STABILITY OF THIN-SHELLED PIPES OVER ELASTIC LIMIT UNDER TORSION
ISAYEV, FK
[J]. IZVESTIYA AKADEMII NAUK AZERBAIDZHANSKOI SSR SERIYA FIZIKO-TEKHNICHESKIKH I MATEMATICHESKIKH NAUK, 1981, (02): : 42 - 46
[8] Hall-Petch effect and strain gradient effect in the torsion of thin gold wires
Gan, Zhipeng
He, Yuming
Liu, Dabiao
Zhang, Bo
Shen, Lei
[J]. SCRIPTA MATERIALIA, 2014, 87 : 41 - 44
[9] A method for representing the under and over elastic limit and concerning the strain hardening of metal.
Faust, O
Tammann, G
[J]. ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE--STOCHIOMETRIE UND VERWANDTSCHAFTSLEHRE, 1910, 75 (01): : 108 - 126
[10] DEPENDENCE OF OPTIMAL HARDENING STRAIN ON RECRYSTALLIZATION STRAIN LIMIT
KOZYRSKII, GY
[J]. PHYSICS OF METALS, 1985, 6 (04): : 831 - 834

← 1 2 3 4 5 →