A model for life prediction in low-cycle fatigue with hold time

In high-temperature and low-cycle fatique, creep damage reduces fatigue life. In this investigation, a model for life prediction in low-cycle fatique with hold time at tensile peak strain is suggested in the temperature region of 0.5T sub(m). This model is based on previously reported theories for c...

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Bibliographic Details
Published in:Journal of materials science 1985-10, Vol.20 (10), p.3763-3779
Main Authors: Hong, Jin Wan, Nam, Soo Woo, Rie, Kyong-Tschong
Format: Article
Language:English
Subjects:
Applied sciences
Condensed matter: structure, mechanical and thermal properties
creep
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Fatigue
Materials science
Mechanical and acoustical properties of condensed matter
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals, semimetals and alloys
Metals. Metallurgy
Physics
plastic deformation
Specific materials
stainless steel
steel
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Summary:In high-temperature and low-cycle fatique, creep damage reduces fatigue life. In this investigation, a model for life prediction in low-cycle fatique with hold time at tensile peak strain is suggested in the temperature region of 0.5T sub(m). This model is based on previously reported theories for creep cavitation and the authors predict the creep-fatique life. It is proposed that the fatigue life may be predicted in terms of plastic strain range, test temperature, hold time and other parameters. An equation for life prediction is given and checked using other investigators' experimental results with various hold times. The predicted creep-fatique lives are in good agreement with those observed experimentally for 304 stainless steel, 316 stainless steel, CrMoV steel and 13CrMo44 steel.
ISSN:0022-2461
1573-4803
DOI:10.1007/BF01113785