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首页> 外文期刊>Journal of Materials Research >Microstructure, thermal, and mechanical characterization of rapidly solidified high strength Fe843Cr_4.3M_04.6V2.2C4.6
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Microstructure, thermal, and mechanical characterization of rapidly solidified high strength Fe843Cr_4.3M_04.6V2.2C4.6

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摘要

Systematic microstructural and mechanical investigations of the Fe84.3Cr43Mo4.6V2.2C4.6alloy cast under special manufacturing conditions in the as-cast state and after specificheat treatment are presented to point out that the special manufacturing of the alloy led tohigh compression strength (up to 4680 MPa) combined with large fracture strain (about20) already in the as-cast state. One select chemical composition of the alloy, which wasmentioned previously Kan et al., Appl. Phys. Lett. 90, 261901 (2007) enhancedmechanical properties already in the as-cast state. Furthermore, that composition iscomparable to commercial high-speed steel. By the special manufacturing used, a highpurity of elements and a high cooling rate, which led to a microstructure similar to acomposite-like material, composed of dendritic area (martensite, bainite, and ferrite) andinterdendritic area (e.g., complex carbides). The presented article demonstrates an alloy thatexhibits already in the as-cast state high fracture strength and large ductility. Furthermore,these outstanding mechanical properties remain unchanged after heating up to 873 K.

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