Low Cycle Fatigue and Elasto-Plastic Behaviour of Materials
Low Cycle Fatigue and Elasto-Plastic Behaviour of Materials

Author: P.D. Portella

Publisher: Elsevier

Published: 1998-09-30

Total Pages: 890

ISBN-13: 0080549942

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The 4th International Conference on Low Cycle Fatigue and Elasto-Plastic Behaviour of Materials was held from 7-11 September 1998 in Garmisch-Partenkirchen, Germany. In response to a call for papers, nearly 200 extended abstracts from 32 countries were submitted to the organizing committee. These papers were presented at the conference as invited lectures or short contributions and as oral or poster presentation. All the papers were presented in poster form in extended poster sessions–a peculiarity of the LCF Conferences which allows an intense, thorough discussion of all contributions. Each chapter provides a comprehensive overview of a materials class or a given subject. Many contributions could have been included in two or even three chapters and so, in order to give a better overview of the content, the reader will find a subject index, a material index and an author index in the back of the book.

Relationship Between Thermal Fatigue and Low-cycle Fatigue at Elevated Temperature
Relationship Between Thermal Fatigue and Low-cycle Fatigue at Elevated Temperature

Author: S. Taira

Publisher:

Published: 1973

Total Pages: 21

ISBN-13:

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This paper discusses the correlation between thermal fatigue and low-cycle fatigue at elevated temperature in terms of the change in microstructure of materials during the fatigue process. It substantiates the formula for life prediction in fatigue at elevated temperature which has been proposed by the author and co-workers with experimental proof. It is found that the characteristic feature of the low-cycle fatigue of a low-carbon steel at the test temperature above 500 C is taken as a diffusion controlled process characterized by the formation of subgrains in the change of microstructure, proved by observations with an optical microscope as well as X-ray diffraction techniques. The same feature is observed in the case of thermal fatigue where the upper bound of temperature in temperature cycling is close to or above 500 C. The temperature level of low-cycle fatigue giving the same fatigue life as a thermal fatigue testing, that is, the equivalent temperature of thermal fatigue is close to the upper bound of temperature of thermal fatigue. In contrast, for the test of thermal fatigue or low-cycle fatigue where such a high temperature is not included in either the range or the level of test temperature, the fatigue damage is taken as controlled by the slip mechanism. The equivalent test temperature is close to the mean of the upper and the lower bound of thermal fatigue.

Fatigue under Thermal and Mechanical Loading: Mechanisms, Mechanics and Modelling
Fatigue under Thermal and Mechanical Loading: Mechanisms, Mechanics and Modelling

Author: J. Bressers

Publisher: Springer Science & Business Media

Published: 2013-04-17

Total Pages: 497

ISBN-13: 9401586365

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The International Symposium "Fatigue under Thermal and Mechanical Loading", held at Petten (The Netherlands) on May 22-24, 1995, was jointly organized by the Institute for Advanced Materials of The Joint Research Centre, E. C. , and by the Societe Fran~se de Metallurgie et de Materiaux. The fast heating and cooling cycles experienced by many high temperature components cause thermally induced stresses, which often operate in combination with mechanical loads. The resulting thermal / mechanical fatigue cycle leads to material degradation mechanisms and failure modes typical of service cycles. The growing awareness that the synergism between the combined thermal and mechanical loads can not be reproduced by means of isothermal tests, has resulted in an increasing interest in thermal and thermo-mechanical fatigue testing. This trend has been reinforced by the constant pull by industry for more performant, yet safer high temperature systems, pushing the materials to the limit of their properties. Dedicated ASTM meetings in particular have set the scene for this area of research. The proceedings of the symposium organized by D. A. Spera and D. F. Mowbray in 1975 provided a reference book on thermal fatigue which reflects the knowledge and experimental capabilities of the mid-seventies.