TY - JOUR
T1 - Premature fracture mechanism in an Fe-Mn-C austenitic steel
AU - Koyama, Motomichi
AU - Sawaguchi, Takahiro
AU - Tsuzaki, Kaneaki
N1 - Funding Information:
M.K. acknowledges the Research Fellowship of the Japan Society for the Promotion of Science for Young Scientists. The Materials Manufacturing and Engineering Station and Materials Analysis Station at the National Institute for Materials Science supported this work by producing the samples and carrying out the analysis of the chemical compositions. The authors would also like to acknowledge Dr. Takehiko Kikuchi for taking part in the discussions during the experiments.
PY - 2012/11
Y1 - 2012/11
N2 - 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. e-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.
AB - 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. e-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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U2 - 10.1007/s11661-012-1220-7
DO - 10.1007/s11661-012-1220-7
M3 - Article
AN - SCOPUS:84872030265
VL - 43
SP - 4063
EP - 4074
JO - Metallurgical Transactions A (Physical Metallurgy and Materials Science)
JF - Metallurgical Transactions A (Physical Metallurgy and Materials Science)
SN - 1073-5623
IS - 11
ER -