The Characterization Of Cast Fe-Cr-C Alloy

Archives of Metallurgy and Materials - Tập 60 Số 2 - Trang 779-782 - 2015
K. Wieczerzak1, Piotr Bała1, Michał Stępień1, Grzegorz Cios1, Tomasz Kozieł1
1AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Al. A. Mickiewicza 30, 30-059 Kraków, Poland

Tóm tắt

AbstractThe paper presents the results of the characterization of alloy from Fe-Cr-C (carbon content 0.79 wt.%) system including the microstructure, phase analysis, morphology and hardness in as cast state. The chemical composition was designed to create chromium-rich ferritic matrix with high volume fraction of carbides in form of interdendritic eutectics. The research was carried out on the cross section of the ingot, synthesized in an arc furnace under high purity argon atmosphere and crystallized on water-cooled copper mould. Microstructural characterization was carried out by light microscopy and scanning electron microscopy (SEM). Phase identification was performed by X-Ray diffraction (XRD). The microstructure of the investigated alloy is composed of primary and secondary dendrites Fe-Cr solid solution and complex M23C6and M7C3carbides in interdendritic areas. Segregation of Cr and C during crystallization causes precipitation of M7C3carbides. The average hardness of the alloy is 205±12 HV10.

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Thông tin xuất bản

Archives of Metallurgy and Materials

Tập 60 Số 2

779-782

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