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Metallurgical and Materials Transactions A
Published in: Metallurgical and Materials Transactions A 11/2012

01-11-2012

Premature Fracture Mechanism in an Fe-Mn-C Austenitic Steel

Authors: Motomichi Koyama, Takahiro Sawaguchi, Kaneaki Tsuzaki

Published in: Metallurgical and Materials Transactions A | Issue 11/2012

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Abstract

We investigated the cause for poor ductility in austenitic Fe-Mn-C steels under a specific condition. Tensile tests were performed on an Fe-17Mn-0.3C steel at 273 K, 294 K, 323 K, 373 K, 423 K, 473 K, and 523 K (0 °C, 21 °C, 50 °C, 100 °C, 150 °C, 200 °C, and 250 °C). Microstructural observations were conducted by optical microscopy, atomic force microscopy, scanning electron microscopy and the X-ray diffraction method. ε-martensitic transformation was concluded to be the major cause for the poor ductility. The cracks were initiated from the annealing twin boundaries that interacted with the ε-martensite.
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Metadata
Title
Premature Fracture Mechanism in an Fe-Mn-C Austenitic Steel
Authors
Motomichi Koyama
Takahiro Sawaguchi
Kaneaki Tsuzaki
Publication date
01-11-2012
Publisher
Springer US
Published in
Metallurgical and Materials Transactions A / Issue 11/2012
Print ISSN: 1073-5623
Electronic ISSN: 1543-1940
DOI
https://doi.org/10.1007/s11661-012-1220-7

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