The fatigue behaviors of butt welds ground flush in the super-long life regime

被引：20

作者：

Zhao Xiaohui ^{[1
]}

Wang Dongpo ^{[1
]}

Deng Caiyan ^{[1
]}

Liu Yu ^{[1
]}

Song Zongxian ^{[1
]}

机构：

[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300072, Peoples R China

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2012年 / 36卷 / 01期

基金：

美国国家科学基金会;

关键词：

Welding; Defect; Crack; Fatigue; HIGH-CYCLE FATIGUE; BEARING STEEL; FAILURE; MECHANISM; STRENGTH; INCLUSION;

D O I：

10.1016/j.ijfatigue.2011.09.009

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The fatigue properties of EH36 steel and butt welds ground flush in the super-long life regime were studied in this paper. Experimental results indicate that fatigue fracture may still occur during 10(8)-10(10) cycles, which is incompatible with conventional method of using the fatigue strength corresponding to 1 x 10(7) cycles to design welding structure serving in the super-long life regime. Scanning electron microscope analysis shows that fatigue crack mainly initiates from internal defects in the fusion face for butt welds ground flush. A new kind of "fish-eye" is found in welded joints. The relation between fatigue life and area of defects in the butt welds ground flush is confirmed. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：1 / 8

页数：8

共 26 条

[1] Gigacycle fatigue properties of 1800 MPa class spring steels [J].

Abe, T ;

Furuya, Y ;

Matsuoka, S .

FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES, 2004, 27 (02) :159-167

[2]

Bathias C, 1999, FATIGUE FRACT ENG M, V22, P559, DOI 10.1046/j.1460-2695.1999.00183.x

[3]

Bathias C, 2001, INT J FATIGUE, V23, pS143, DOI 10.1016/S0142-1123(01)00123-2

[4] Failure mechanisms of automotive metallic alloys in very high cycle fatigue range [J].

Bayraktar, Emin ;

Garcias, Israel Marines ;

Bathias, Claude .

INTERNATIONAL JOURNAL OF FATIGUE, 2006, 28 (11) :1590-1602

[5] Ultra-long cycle fatigue of high-strength carbon steels part II: estimation of fatigue limit for failure from internal inclusions [J].

Chapetti, MD ;

Tagawa, T ;

Miyata, T .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 356 (1-2) :236-244

[6]

Fukumoto S., 1991, P 1991 VAC MET C MEL, P3

[7]

Hadrboletz A, 1997, INT MATER REV, V42, P1, DOI 10.1179/095066097790326029

[8]

Hong YS, 2009, ACTA METALL SIN, V45, P769

[9]

K Asami, 1985, HEAT TREATMENT TECHN, V25, P147

[10] An understanding of very high cycle fatigue of metals [J].

Marines, I ;

Bin, X ;

Bathias, C .

INTERNATIONAL JOURNAL OF FATIGUE, 2003, 25 (9-11) :1101-1107

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