MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
Effect of Carbon Addition on the Microstructural Evolution and Mechanical Properties in Hypo-Eutectic Fe-Zr(-Nb) Alloys
Tae Eung KimJin Man ParkSung Woo SohnDo Hyang KimWon Tae KimMihai StoicaUta KühnJürgen Eckert
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2010 Volume 51 Issue 4 Pages 799-802

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Abstract

The effect of carbon addition on the microstructure and mechanical properties of Fe-Zr and Fe-Zr-Nb ultrafine eutectic-dendrite composites has been investigated. Addition of carbon leads to the formation of iron solid solution strengthened by carbon interstitials and carbide particles encapsulated by α-Fe dendrites preferentially nucleated on the carbides. Consequently, the ultrafine eutectic Fe-5Zr-5Nb-0.3C (mass%) alloy exhibits high compressive strength (∼1.2 GPa) and large plastic strain (∼24%). The present study suggests another effective way to enhance the mechanical properties of Fe-based nano-eutectic alloys.

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© 2010 The Japan Institute of Metals and Materials
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