Magnetic force microscopy of fatigue crack tip region in a 316L austenitic stainless steel

Magnetic force microscopy was used to image strain-induced martensite resulting from fatigue crack growth in a 316L austenitic stainless steel. Martensite formation associated with steady state crack growth was observed. Enhancement of martensitic transformation upon a tensile overload is considered...

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Bibliographic Details
Published in:Scripta materialia 2002-10, Vol.47 (7), p.441-446
Main Authors: Miller, A., Estrin, Y., Hu, X.Z.
Format: Article
Language:English
Subjects:
Applied sciences
Austenite
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Fatigue
Fatigue, corrosion fatigue, embrittlement, cracking, fracture and failure
Fatigue, embrittlement, and fracture
Magnetic force microscopy
Martensite
Materials science
Metals. Metallurgy
Physics
Steel
Treatment of materials and its effects on microstructure and properties
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Summary:Magnetic force microscopy was used to image strain-induced martensite resulting from fatigue crack growth in a 316L austenitic stainless steel. Martensite formation associated with steady state crack growth was observed. Enhancement of martensitic transformation upon a tensile overload is considered to contribute to crack growth retardation in 316L.
ISSN:1359-6462
1872-8456
DOI:10.1016/S1359-6462(02)00138-0