Boundary strengthening in undeformed and deformed polycrystals

被引：127

作者：

Hansen, N ^{[1
]}

机构：

[1] Riso Natl Lab, Ctr Fundamental Res, Dept Mat Res, DK-4000 Roskilde, Denmark

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2005年 / 409卷 / 1-2期

关键词：

Hall-Petch relation; grain boundaries; dislocation boundaries; nanostructures;

D O I：

10.1016/j.msea.2005.04.061

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The Hall-Petch relation is discussed separately for the yield stress of undeformed polycrystalline metals and the flow stress of deformed metals. The strength contributions for grain boundaries and from dislocation boundaries are given special attention. An experimental analysis supports the Hall-Petch relation for undeformed metals over a grain size range from about 20 nm to hundred of micrometres. For deformed metals the strengthening effect of low angle dislocation boundaries evolves with increasing strain in parallel with a change in their spacing. An application of the Hall-Petch relation must therefore be based on a detailed structural characterization. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：39 / 45

页数：7

共 26 条

[1] THE PLASTIC-DEFORMATION OF POLYCRYSTALS .1. ALUMINUM BETWEEN ROOM-TEMPERATURE AND 400-DEGREES-C [J].

ALHAIDARY, JT ;

PETCH, NJ ;

DELOSRIOS, ER .

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1983, 47 (06) :869-890

[2] PLASTIC DEFORMATION OF POLYCRYSTALLINE AGGREGATES [J].

ARMSTRONG, R ;

DOUTHWAITE, RM ;

CODD, I ;

PETCH, NJ .

PHILOSOPHICAL MAGAZINE, 1962, 7 (73) :45-&

[3] LIMITING GRAIN SIZE DEPENDENCE OF STRENGTH OF A POLYCRYSTALLINE AGGREGATE [J].

ARMSTRONG, RW ;

CHOU, YT ;

FISHER, RM ;

LOUAT, N .

PHILOSOPHICAL MAGAZINE, 1966, 14 (131) :943-+

[4]

BAKER TN, 1983, YIELD FLOW FRACTURE

[5]

ESHELBY JD, 1951, PHILOS MAG, V42, P351

[6] Grain orientation dependence of microstructures in a warm rolled IF steel [J].

Haldar, A ;

Huang, X ;

Leffers, T ;

Hansen, N ;

Ray, RK .

ACTA MATERIALIA, 2004, 52 (18) :5405-5418

[7] THE DEFORMATION AND AGEING OF MILD STEEL .3. DISCUSSION OF RESULTS [J].

HALL, EO .

PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON SECTION B, 1951, 64 (381) :747-753

[8] STRENGTHENING OF ALUMINIUM BY A 3-DIMENSIONAL NETWORK OF ALUMINIUM-OXIDE PARTICLES [J].

HANSEN, N .

ACTA METALLURGICA, 1969, 17 (05) :637-&

[9] Hall-Petch relation and boundary strengthening [J].

Hansen, N .

SCRIPTA MATERIALIA, 2004, 51 (08) :801-806

[10]

HANSEN N, 1983, YIELD FLOW FRACTURE, P311

← 1 2 3 →