Microstructures and Wear-Resistant Properties of In Situ WCp/W Wire Hybrid Reinforced Iron Matrix Composites via Electromagnetic Field

Abstract:

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In the paper, tungsten carbide (WC) particles can be in-situ synthesized by applying electromagnetic field to the system consisting of tungsten wires and gray cast iron melt at 1573 K. The microstructures and wear-resistant properties of composites reinforced by both WC particles and the residual tungsten wires were investigated by XRD, SEM, EDS, micro-hardness and pin-on-disc wear measurements. The results show that, with enhancing frequencies of electromagnetic field from 0 to 5 KHz, the amounts of in-situ WC particles increased and of the residual tungsten wires gradually decreased until tungsten wires completely reacted. Due to the higher hardness of in-situ WCp(2100-2231HV0.1) and the strong interfacial bonding, the composites displayed an excellent wear-resistant properties. When the frequency was 5 kHz, the wear loss for the composite fabricated was optimal and 2.69 times lower than that of reference samples.

Info:

Periodical:

Advanced Materials Research (Volumes 79-82)

Edited by:

Yansheng Yin and Xin Wang

Pages:

1463-1466

DOI:

10.4028/www.scientific.net/AMR.79-82.1463

Citation:

L. B. Niu et al., "Microstructures and Wear-Resistant Properties of In Situ WCp/W Wire Hybrid Reinforced Iron Matrix Composites via Electromagnetic Field", Advanced Materials Research, Vols. 79-82, pp. 1463-1466, 2009

Online since:

August 2009

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Price:

$35.00

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