Kinetics of Defect Accumulation and Duality of the Weller Curve in Gigacycle Fatigue of Metals

被引：8

作者：

Naimark, O. B. ^{[1
]}

Plekhov, O. A. ^{[1
]}

Betekhtin, V. I. ^{[2
]}

Kadomtsev, A. G. ^{[2
]}

Narykova, M. V. ^{[2
]}

机构：

[1] Russian Acad Sci, Inst Continuous Media Mech, Ural Branch, Perm 614013, Russia

[2] Russian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia

来源：

TECHNICAL PHYSICS | 2014年 / 59卷 / 03期

基金：

俄罗斯基础研究基金会;

关键词：

SUBSURFACE CRACK INITIATION; CYCLE FATIGUE; PROPAGATION BEHAVIOR; GROWTH; STEELS; MODEL;

D O I：

10.1134/S1063784214030190

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We propose a model describing the kinetics of accumulation of defects under cyclic loading in metals. Analysis of experimental data on the initial defect distribution and of the role of the free surface of the sample in straining makes it possible to explain the features of generation of fatigue cracks in the bulk, which is typical of the gigacycle fatigue regime at a low stress level. The duality of the Weller curve in the gigacycle fatigue regime is attributed to the emergence of a fine-grain region in the form of a dissipative peaking structure in the defect ensemble.

引用

页码：398 / 401

页数：4

共 23 条

[1] Bathias C., 2004, Gigacycle fatigue in mechanical practice
[2] Effect of the evolution of microscopic pores and cracks on mechanical properties of metallic materials
Betekhtin, V. I.
Bakhtibaev, A. N.
Kadomtsev, A. G.
Amosova, O. V.
Narykova, M. V.
[J]. METAL SCIENCE AND HEAT TREATMENT, 2013, 55 (1-2) : 51 - 55
[3] Betekhtin V. I., 1979, PROBL PROCHN, V7, P38
[4] Betekhtin V. I., 1979, PROBL PROCHN, V9, P3
[5] Betekhtin V. I., 1979, PROBL PROCHN, V8, P51
[6] Evolution of microscopic cracks and pores in solids under loading
Betekhtin, VI
Kadomtsev, AG
[J]. PHYSICS OF THE SOLID STATE, 2005, 47 (05) : 825 - 831
[7] Botvina L.R., 2004, Zavod. Lab. Diagn. Mater, V70, P41
[8] Ultra-long cycle fatigue of high-strength carbon steels part II: estimation of fatigue limit for failure from internal inclusions
Chapetti, MD
Tagawa, T
Miyata, T
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 356 (1-2): : 236 - 244
[9] Cheremskoi P. G., 1990, PORES SOLIDS
[10] Crack growth based probability modeling of S-N response for high strength steel
Harlow, D. Gary
Wei, Robert P.
Sakai, Tatsuo
Oguma, Noriyasu
[J]. INTERNATIONAL JOURNAL OF FATIGUE, 2006, 28 (11) : 1479 - 1485

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