|About this Abstract
||2010 TMS Annual Meeting & Exhibition
||Processing Materials for Properties
||Transformation Induced Plasticity in Fe-Cr-V-C
||Uta Kuehn, Jan Romberg, Norbert Mattern, Juergen Eckert
|On-Site Speaker (Planned)
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 class of TRIP assisted steels was found, which shows an extreme mechanical loading capacity.
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