FATIGUE CRACK INITIATION ON SLIP BANDS - THEORY AND EXPERIMENT

被引：61

作者：

LIN, MR

FINE, ME

MURA, T

机构：

[1] NORTHWESTERN UNIV,DEPT CIVIL ENGN,EVANSTON,IL 60201

[2] NORTHWESTERN UNIV,MAT RES CTR,EVANSTON,IL 60201

来源：

ACTA METALLURGICA | 1986年 / 34卷 / 04期

关键词：

COPPER AND ALLOYS - Fatigue - COPPER METALLOGRAPHY - Lattice Defects - IRON AND STEEL METALLOGRAPHY - Lattice Defects;

D O I：

10.1016/0001-6160(86)90177-X

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

A model for fatigue crack initiation is presented based on accumulation of dislocations in slip bands modeled as elliptical domains with the domain size for tension being slightly different from that for compression. This takes account of irreversibility. Using continuous dislocation theory, an accumulation of dislocation dipoles was calculated at the boundary between the slip domain and the matrix. Good agreement between theoretical predictions and measured values for the cycles to initiation was obtained for Fe-3%Si and OFHC copper.

引用

页码：619 / 628

页数：10

共 33 条

[1] SPREAD OF PLASTIC YIELD FROM A NOTCH [J].

BILBY, BA ;

COTTRELL, AH ;

SWINDEN, KH .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1963, 272 (1350) :304-+

[2]

CHIN GY, 1967, T METALL SOC AIME, V239, P1400

[3]

CHIN GY, 1969, T METALL SOC AIME, V245, P383

[4] COFFIN-MANSON RELATION FOR FATIGUE CRACK INITIATION [J].

COOPER, CV ;

FINE, ME .

SCRIPTA METALLURGICA, 1984, 18 (06) :593-596

[5]

COOPER CV, METALL T A

[6]

Cooper CV, 1983, THESIS NW U EVANSTON

[7]

COTTRELL AH, 1957, DISLOCATION PLASTIC, P111

[8] A COMPARISON OF 2 SIMPLE METHODS FOR MEASURING CYCLIC INTERNAL AND EFFECTIVE STRESSES [J].

DICKSON, JI ;

BOUTIN, J ;

HANDFIELD, L .

MATERIALS SCIENCE AND ENGINEERING, 1984, 64 (01) :L7-L11

[9] THE ELASTIC FIELD OUTSIDE AN ELLIPSOIDAL INCLUSION [J].

ESHELBY, JD .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1959, 252 (1271) :561-569

[10] THE DETERMINATION OF THE ELASTIC FIELD OF AN ELLIPSOIDAL INCLUSION, AND RELATED PROBLEMS [J].

ESHELBY, JD .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1957, 241 (1226) :376-396

← 1 2 3 4 →