Crack propagation behavior in white etching layer on rail steel surface

被引：31

作者：

Lian, Qinglin ^{[1
,2
]}

Deng, Guanyu ^{[2
]}

Al-Juboori, Ali ^{[2
,3
]}

Li, Huijun ^{[2
]}

Liu, Zhiming ^{[1
]}

Wang, Xi ^{[1
]}

Zhu, Hongtao ^{[2
]}

机构：

[1] Beijing Jiaotong Univ, Sch Mech Elect & Control Engn, Beijing 100044, Peoples R China

[2] Univ Wollongong, Sch Mech Mat Mechatron & Biomed Engn, Wollongong, NSW 2522, Australia

[3] Tech Engn Coll, Baghdad, Iraq

来源：

ENGINEERING FAILURE ANALYSIS | 2019年 / 104卷

基金：

国家重点研发计划;

关键词：

White etching layer (WEL); Microstructure analysis; FE model; Crack propagation; ROLLING-CONTACT FATIGUE; STRESS INTENSITY FACTORS; SQUAT FORMATION; SLIP RATIO; GROWTH; MODEL; MECHANISM; WEAR; LIFE;

D O I：

10.1016/j.engfailanal.2019.06.067

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

White etching layer (WEL) on a rail surface plays a significant role on rail surface degradation. Current metallurgical investigation found three different crack patterns in WEL (i) leading crack initiating from WEL edge and propagating along WEL boundary; (ii) crack within WEL growing vertically; (iii) trailing crack propagating either along WEL/matrix interface or kinking into rail substrate. A finite element model coupled with J-integral and stress intensity factors analysis was applied to evaluate cracking properties and predict crack extension paths. Results showed that shear mode is the dominant crack propagation mechanism. Leading crack at WEL possesses the highest potential to grow. Crack within WEL has a significant rise in cracking possibility when it extends to the lamellar interface boundary. Both of loading pressure and frictional coefficient has an accelerating effect on promoting crack propagation. Leading crack inclined with 22.6 degrees and trailing crack inclined with 32.62 degrees are difficult to grow.

引用

页码：816 / 829

页数：14

共 48 条

[1] Squat formation and the occurrence of two distinct classes of white etching layer on the surface of rail steel [J].

Al-Juboori, A. ;

Wexler, D. ;

Li, H. ;

Zhu, H. ;

Lu, C. ;

McCusker, A. ;

McLeod, J. ;

Pannil, S. ;

Wang, Z. .

INTERNATIONAL JOURNAL OF FATIGUE, 2017, 104 :52-60

[2]

Anderson - T.L., 1991, FRACTURE MECH FUNDAM

[3]

[Anonymous], 1997, J BASIC ENG-T ASME

[4] Formation of white-etching layers on rail treads [J].

Baumann, G ;

Fecht, HJ ;

Liebelt, S .

WEAR, 1996, 191 (1-2) :133-140

[5] Stress intensity factor range and propagation mode of surface cracks under rolling-sliding contact [J].

Benuzzi, D ;

Bormetti, E ;

Donzella, G .

THEORETICAL AND APPLIED FRACTURE MECHANICS, 2003, 40 (01) :55-74

[6] 3D model of liquid entrapment mechanism for rolling contact fatigue cracks in rails [J].

Bogdanski, S. ;

Lewicki, P. .

WEAR, 2008, 265 (9-10) :1356-1362

[7] Experimental and theoretical investigation of the phenomenon of filling the RCF crack with liquid [J].

Bogdanski, S ;

Lewicki, P ;

Szymaniak, M .

WEAR, 2005, 258 (7-8) :1280-1287

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

BOLD, PE ;

BROWN, MW ;

ALLEN, RJ .

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

[9] Crack propagation in rails under rolling contact fatigue loading conditions based on material forces [J].

Brouzoulis, Jim ;

Ekh, Magnus .

INTERNATIONAL JOURNAL OF FATIGUE, 2012, 45 :98-105

[10] Rolling contact fatigue of white etching layer - Part 2. Numerical results [J].

Carroll, R. I. ;

Beynon, J. H. .

WEAR, 2007, 262 (9-10) :1267-1273

← 1 2 3 4 5 →