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Transformation-induced plasticity in Fe–Cr–V–C

Published online by Cambridge University Press:  31 January 2011

Uta Kühn ,
Jan Romberg ,
Norbert Mattern ,
Horst Wendrock  and
Jürgen Eckert
Horst Wendrock
Affiliation:
IFW Dresden, Institute for Complex Materials, D-01171 Dresden, Germany
Jürgen Eckert*
Affiliation:
IFW Dresden, Institute for Complex Materials, D-01171 Dresden, Germany; and Technical University (TU) Dresden, Institute of Materials Science, D-01062 Dresden, Germany
*
b)This author was an editor of this journal during the review and decision stage. For the JMR policy on review and publication of manuscripts authored by editors, please refer to http://www.mrs.org/jmr_policy
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Abstract

On the basis of the Fe84.3C4.6Cr4.3Mo4.6V2.2 high-speed tool steel, manufactured under relatively high cooling rates and highly pure conditions, a further improvement of the mechanical characteristics by slight modification of the alloy composition was attempted. For this, the alloy Fe88.9Cr4.3V2.2C4.6 was generated by elimination of Mo. By applying special preparation conditions, a microstructure composed of martensite, retained austenite, and a fine network of special carbides was obtained already in the as-cast state. This material exhibits extremely high compression strength of over 5000 MPa combined with large compression strain of more than 25% due to deformation-induced martensite formation. With this alloy a new composition of transformation-induced plasticity-assisted steels was found, which shows an extreme mechanical loading capacity.

Keywords

CastingCompositeMicrostructure
Type
Articles
Information
Journal of Materials Research , Volume 25 , Issue 2 , February 2010 , pp. 368 - 374
Copyright
Copyright © Materials Research Society 2010

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