Fracture Modes of AISI Type 302 Stainless Steel Under Metastable Plastic Deformation

Martensitic transformation can be induced by plastic deformation in metastable iron-based alloys, such as stainless steels containing limited amounts of C, Ni and Cr. This transformation takes place at the temperature range from Ms and Md, usually at relatively lower temperature values. The transfor...

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Bibliographic Details
Published in:Materials research (São Carlos, São Paulo, Brazil) São Paulo, Brazil), 2017-01, Vol.20 (suppl 2), p.596-602
Main Authors: Santos, Jheison Lopes dos, Monteiro, Sergio Neves, Cândido, Veronica Scarpini, Silva, Anderson Oliveira da, Tommasini, Flavio James
Format: Article
Language:English
Subjects:
AISI type 302 stainless steel
ENGINEERING, CHEMICAL
fracture modes
martensitic transformation
MATERIALS SCIENCE, MULTIDISCIPLINARY
METALLURGY & METALLURGICAL ENGINEERING
metastable deformation
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Summary:Martensitic transformation can be induced by plastic deformation in metastable iron-based alloys, such as stainless steels containing limited amounts of C, Ni and Cr. This transformation takes place at the temperature range from Ms and Md, usually at relatively lower temperature values. The transformed martensite has been associated with maximum ultimate strength and relatively high ductility. In the present work, the tensile fracture characteristics of a metastable AISI type 302 stainless steel was properties were compared to those of a stable AISI type 310 austenitic stainless steel. It was found that in 302 steel, its high degree of metastability and dilute dispersion of inclusions result in higher strength and complex modes of fracture, one of which consisting of martensite surrounding globular inclusions.
ISSN:1516-1439
1980-5373
1980-5373
DOI:10.1590/1980-5373-mr-2017-0051