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The Influence of Boron on the Ductile-Brittle Transition in Femn Steels

Published online by Cambridge University Press:  26 February 2011

M.J. Strum ,
S.K. Hwang  and
J.W. Morris Jr.
M.J. Strum
Affiliation:
Lawrence Livermore National Laboratory, Livermore, CA 94550
S.K. Hwang
Affiliation:
Inha University, Inchon, Korea
J.W. Morris Jr.
Affiliation:
Center for Advanced Materials, Lawrence Berkeley Laboratory, Berkeley, CA 94720
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Abstract

Given the recent interest in the element boron as an intergranular “glue” in intermetallics it is important to recognize that it also has a strong effect on intergranular fracture in more conventional structural alloys. The best documented examples are Fe-Mn alloys. It was shown some years ago that the introduction of a minor alloying addition of boron can reduce the ductile-brittle transition of Fe-12Mn ferritic steel by nearly 200 degrees centrigrade; more recent work has shown similar results in austenitic Fe-Mn steels. The effect is due to the suppression of intergranular fracture. The basic mechanism has been worked out in some detail and will be described.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 122: Symposium I – Interfacial Structure, Properties, and Design , 1988 , 467
Copyright
Copyright © Materials Research Society 1988

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References

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