Relation between microstructure induced by oxidation and room-temperature mechanical properties of the thermally grown oxide scales on austenitic stainless steels

Тип публикации: статья из журнала

Год издания: 2017

Идентификатор DOI: 10.1016/j.matchar.2017.03.003

Ключевые слова: Austenitic stainless steel, High temperature oxidation, Microstructure, Resulphurized steel, Tensile testing, Adhesion, Austenitic stainless steel, Grain boundaries, Interfaces (materials), Materials testing apparatus, Microstructure, Oxidation, Scale (deposits), Steel testing, Tensile testing, Thermal barrier coatings, Thermooxidation, Adhesion properties, Fe content, In-situ tensile testing, Micro-structure evolutions, MnS inclusions, Oxide scale, Scale thickness, Thermally grown oxide scale, Stainless steel

Аннотация: The spalling/cracking behaviour, at room temperature, of thermally grown oxide scales under tensile stress was investigated using SEM in-situ tensile testing for two austenitic stainless steels with close composition except their S content. A correlation between damage patterns, microstructure, mechanical and adhesion properties of the oxide scales is proposed. The difference in microstructure evolution during oxidation between the two steels is explained in relation with the volume fraction of MnS inclusions in the substrate (i.e. S content). Although a direct effect of S content on the oxide scale adhesion is not evidenced, the metal/oxide toughness seems strongly affected by oxides features such as scale thickness, Fe content and location of internal oxides (SiO2 along the metal/scale interface or at the grain boundaries of the underneath substrate). © 2017 Elsevier Inc.

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Издание

Журнал: Materials Characterization

Выпуск журнала: Vol. 127

Номера страниц: 161-170

ISSN журнала: 10445803

Авторы

  • Pascal Celine (Univ Grenoble Alpes, CNRS, Grenoble INP, SIMaP, F-38000 Grenoble, France)
  • Braccini Muriel (Univ Grenoble Alpes, CNRS, Grenoble INP, SIMaP, F-38000 Grenoble, France)
  • Parry Valerie (Univ Grenoble Alpes, CNRS, Grenoble INP, SIMaP, F-38000 Grenoble, France)
  • Fedorova Elena (Siberian Fed Univ, Krasnoyarsk, Russia; Inst Computat Technol SB RAS, SKTB Nauka, Krasnoyarsk 660049, Russia)
  • Mantel Marc (Univ Grenoble Alpes, CNRS, Grenoble INP, SIMaP, F-38000 Grenoble, France; UGITECH SA, Ugine, France)
  • Oquab Djar (Univ Toulouse, Inst Carnot CIRIMAT, ENSIACET, Toulouse, France)
  • Monceau Daniel (Univ Toulouse, Inst Carnot CIRIMAT, ENSIACET, Toulouse, France)

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