EBSD investigation of the crack initiation and TEM/FIB analyses of the microstructural changes around the cracks formed under Rolling Contact Fatigue (RCF)

被引：181

作者：

Grabulov, A. ^{[1
,2
]}

Petrov, R. ^{[3
]}

Zandbergen, H. W. ^{[1
]}

机构：

[1] Delft Univ Technol, Kavli Inst Nanosci, Natl Ctr HREM, NL-2628 CJ Delft, Netherlands

[2] Mat Innovat Inst M2i, NL-2600 GA Delft, Netherlands

[3] Univ Ghent, Dept Mat Sci & Engn, B-9052 Ghent, Belgium

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2010年 / 32卷 / 03期

关键词：

Rolling Contact Fatigue; Bearings; Subsurface cracks; Inclusions; EBSD; TEM; FIB; WHITE ETCHING AREA; BEARING STEELS; TEXTURE;

D O I：

10.1016/j.ijfatigue.2009.07.002

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Rolling Contact Fatigue (RCF) is very high-cycle fatigue process, leading to the formation of so-called butterfly cracks around non-metallic inclusions. The purpose of this study is to describe the crack initiation and microstructural changes around butterfly cracks in the hardened and tempered bearing steel with artificially introduced Al(2)O(3) inclusions. This paper presents results from investigations using state-of-art electron imaging techniques such as Transmission Electron Microscopy (TEM), Electron Backscattered Diffraction (EBSD) and Focused Ion Beam (FIB). EBSD measurements showed high level of local grain mis-orientation at Al(2)O(3)/steel matrix interface which suggests possible locations for microcracks initiation. The TEM samples, containing the cracks, were selected from specific locations using precise FIB preparation process, allowing the TEM analyses of the large microstructural changes between the butterfly crack (formation of ultra fine nano-crystalline ferrite) and the steel matrix (tempered martensite). It was found that the butterfly crack growth and microstructural changes (formation of nano-crystalline ferrite) are simultaneous processes as a result of low-temperature recrystallization. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：576 / 583

页数：8

共 20 条

[1] MICROSTRUCTURAL CHANGES AROUND NON-METALLIC INCLUSIONS CAUSED BY ROLLING-CONTACT FATIGUE OF BALL-BEARING STEELS [J].

BECKER, PC .

METALS TECHNOLOGY, 1981, 8 (JUN) :234-243

[2]

DEITER GE, 1986, MECH METALLURGY, P240

[3] Point defect concentrations in metastable Fe-C alloys [J].

Först, CJ ;

Slycke, J ;

Van Vliet, KJ ;

Yip, S .

PHYSICAL REVIEW LETTERS, 2006, 96 (17)

[4] TEM/SEM investigation of microstructural changes within the white etching area under rolling contact fatigue and 3-D crack reconstruction by focused ion beam [J].

Grabulov, A. ;

Ziese, U. ;

Zandbergen, H. W. .

SCRIPTA MATERIALIA, 2007, 57 (07) :635-638

[5] Microstructural changes and crack initiation with white etching area formation under rolling/sliding contact in bearing steel [J].

Harada, H ;

Mikami, T ;

Shibata, M ;

Sokai, D ;

Yamamoto, A ;

Tsubakino, H .

ISIJ INTERNATIONAL, 2005, 45 (12) :1897-1902

[6]

HARRIS TA, 2001, ROLLING BEARING ANAL, P835

[7]

Hyde RS., 1996, ASM HDB, V19, P691

[8] Computer visualization of three-dimensional image data using IMOD [J].

Kremer, JR ;

Mastronarde, DN ;

McIntosh, JR .

JOURNAL OF STRUCTURAL BIOLOGY, 1996, 116 (01) :71-76

[9]

Martin JA, 1966, J BASIC ENG, P555

[10]

NAGUMO M, 1969, FRACTURE, P587

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