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Evolution of the Cyclic Plastic Response of Sanicro 25 Steel Cycled at Ambient and Elevated Temperatures
Institute of Physics of Materials, Academy of Sicences of Czech Republic, Brno.
Institute of Physics of Materials, Academy of Sciences of the Czech Republic, Brno.
Institute of Physics of Materials, Academy of Sciences of the Czech Republic, Brno.
Institute of Physics of Materials, Academy of Sciences of the Czech Republic, Brno.
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2016 (English)In: International Journal of Fatigue, ISSN 0142-1123, E-ISSN 1879-3452, Vol. 83, no 1, 75-83 p.Article in journal (Refereed) Published
Abstract [en]

Cyclic plastic response of the austenitic heat resistant steel Sanicro 25 has been studied during strain controlled low cycle fatigue tests performed at ambient and at elevated temperature. Simultaneously with the cyclic hardening/softening curves hysteresis loops during cyclic loading were analyzed using generalized statistical theory of the hysteresis loop. The probability density distribution function of the internal critical stresses, the effective saturated stress and their evolution during cycling were derived for various strain amplitudes. The internal dislocation structure and the surface relief at room and at elevated temperature were studied and correlated with the cyclic stress–strain response and the evolution of the probability density function of the internal critical stresses.

Place, publisher, year, edition, pages
2016. Vol. 83, no 1, 75-83 p.
Keyword [en]
cyclic plasticity, hysteresis loop analysis, heat resistant steel, dislocation structure, effect of temperature
National Category
Other Materials Engineering Applied Mechanics
Identifiers
URN: urn:nbn:se:liu:diva-123644DOI: 10.1016/j.ijfatigue.2015.03.015ISI: 000367111200010OAI: oai:DiVA.org:liu-123644DiVA: diva2:890635
Note

Funding agencies; GACR [13-23652S]; European Regional Development Fund [CZ.1.05/1.1.00/02.0068];  [RVO: 68081723]

Available from: 2016-01-04 Created: 2016-01-04 Last updated: 2016-01-25

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Chai, Guocai
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Engineering MaterialsFaculty of Science & Engineering
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