Three-dimensional modelling of rail steel microstructure and crack growth

被引：12

作者：

Franklin, F. J. ^{[1
]}

Gahlot, A. ^{[2
]}

Fletcher, D. I. ^{[3
]}

Garnham, J. E. ^{[4
]}

Davis, C. ^{[4
]}

机构：

[1] Newcastle Univ, Sch Mech & Syst Engn, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

[2] Amity Univ, Sch Comp Sci, Noida, UP, India

[3] Univ Sheffield, Dept Mech Engn, Sheffield, S Yorkshire, England

[4] Univ Birmingham, Dept Met & Mat, Birmingham B15 2TT, W Midlands, England

来源：

WEAR | 2011年 / 271卷 / 1-2期

基金：

英国工程与自然科学研究理事会;

关键词：

Rolling contact fatigue; Steel; Rail-wheel tribology; Microstructure; Voronoi cells; ROLLING-CONTACT FATIGUE;

D O I：

10.1016/j.wear.2010.10.044

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A three-dimensional model of microstructure based on convex polyhedra, generated using the Voronoi method, is used to model the early stages of crack growth. The statistical properties of the polyhedra's volumes, and the corresponding polygon areas in a cross-section, are studied and some simple relationships are revealed which are useful for extrapolating 3D microstructure properties from analysis of a 2D micrograph. This representation of microstructure can be used to map grain boundaries, to determine potential routes for, and obstacles to, crack propagation. The model is used to investigate the effect of severe deformation on crack growth, and data from examination of test samples is used to support this. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：357 / 363

页数：7

共 16 条

[1] The Quickhull algorithm for convex hulls [J].

Barber, CB ;

Dobkin, DP ;

Huhdanpaa, H .

ACM TRANSACTIONS ON MATHEMATICAL SOFTWARE, 1996, 22 (04) :469-483

[2] SHEAR MODE CRACK-GROWTH AND ROLLING-CONTACT FATIGUE [J].

BOLD, PE ;

BROWN, MW ;

ALLEN, RJ .

WEAR, 1991, 144 (1-2) :307-317

[3]

de los Rios E. R., 1984, Fatigue of Engineering Materials and Structures, V7, P97

[4] A simple method of stress intensity factor calculation for inclined surface-breaking cracks with crack face friction under contact loading [J].

Fletcher, DI ;

Beynon, JH .

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY, 1999, 213 (J6) :481-486

[5] A quantitative model for predicting the morphology of surface initiated rolling contact fatigue cracks in back-up roll steels [J].

Frolish, MF ;

Fletcher, DI ;

Beynon, JH .

FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES, 2002, 25 (11) :1073-1086

[6] Predicting the life of steel rails [J].

Garnham, J. E. ;

Franklin, F. J. ;

Fletcher, D. I. ;

Kapoor, A. ;

Davis, C. L. .

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART F-JOURNAL OF RAIL AND RAPID TRANSIT, 2007, 221 (01) :45-58

[7]

GARNHAM JE, P I MECH F IN PRESS, P224, DOI DOI 10.1243/09544097JRRT414

[8]

GLADMAN T, 1997, PHYSICAL METALLURGY, P154

[9] MECHANISM OF CRACK-GROWTH IN LUBRICATED ROLLING SLIDING CONTACT [J].

KANETA, M ;

YATSUZUKA, H ;

MURAKAMI, Y .

ASLE TRANSACTIONS, 1985, 28 (03) :407-414

[10] COMPARISON BETWEEN VARIOUS DISPLACEMENT-BASED STRESS INTENSITY FACTOR COMPUTATION TECHNIQUES [J].

LIM, IL ;

JOHNSTON, IW ;

CHOI, SK .

INTERNATIONAL JOURNAL OF FRACTURE, 1992, 58 (03) :193-210

← 1 2 →