High temperature work hardening stages, dynamic strain aging and related dislocation structure in tensile deformed AISI 301 stainless steel
| Autor: | Eduardo de Sousa Lima, Sergio Neves Monteiro, Fábio de Oliveira Braga, Andersan Santos de Paula, Lucio Fabio Cassiano Nascimento, Noan Tonini Simonassi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
lcsh:TN1-997 Materials science Tension (physics) Metals and Alloys 02 engineering and technology Work hardening engineering.material Plasticity 021001 nanoscience & nanotechnology 01 natural sciences Surfaces Coatings and Films Biomaterials Transition point 0103 physical sciences Ultimate tensile strength Ceramics and Composites engineering Austenitic stainless steel Composite material Dislocation 0210 nano-technology Dynamic strain aging lcsh:Mining engineering. Metallurgy |
| Zdroj: | Journal of Materials Research and Technology, Vol 7, Iss 4, Pp 571-577 (2018) |
| ISSN: | 2238-7854 |
| Popis: | The development of dislocation structures associated with work hardening stages and dynamic strain aging (DSA) is investigated in an AISI 301 austenitic stainless steel plastically deformed in tension at 500 and 600 °C. In the first work hardening stage, up to 22% of plastic strain at 500 °C and 18% at 600 °C, incipient dislocation cells begin to be formed and are observed in association with {1 0 0} TEM diffraction pattern. At the transition point from first to second stage, the cells are well consolidated with a maximum dislocation density typical of DSA in stainless steels. The sharp decrease in work hardening rate after the transition point discloses a reduction in cell size together with evidence of dynamic recovery without sub-boundaries formation due to DSA. Keywords: 301 stainless steel, Work hardening stages, Dislocation structure, Dynamic strain aging |
| Databáze: | OpenAIRE |
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