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A Study on the Microstructure Mechanical Properties and Corrosion Resistance of Centrifugally Cast Heavy Wall Thickness Low Carbon 46Ni-35Cr-9Mo Alloy

The low carbon 46Ni-35Cr-9Mo alloy is a solid solution strengthened cast Ni-Cr-Mo alloy additionally containing Cu and N. This work reports on the properties achievable for a centrifugally cast low carbon 46Ni-35Cr-9Mo alloy tube of 4500 mm length and 55 mm wall thickness.

Product Number: 51317--9349-SG
ISBN: 9349 2017 CP
Author: Shankar Venkataraman
Publication Date: 2017
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The low carbon 46Cr-35Ni-9Mo alloy is a solid solution strengthened cast Ni-Cr-Mo alloy additionally containing Cu and N. This alloy displays the best known mechanical properties and corrosion resistance among the existing cast low carbon Ni-Cr-Mo alloys. This work reports on the properties achievable for a centrifugally cast low carbon 46Cr-35Ni-9Mo alloy tube of 4500 mm length and 55 mm wall thickness. The phase formation after the solidification as well as the influence of heat treatment on the microstructure development is examined. The influence of the various heat treatment states on the mechanical properties as well as corrosion resistance is studied. An extensive testing program has been taken for the determination of mechanical properties on samples taken from different orientations within the centrifugally cast tube. The properties do not exhibit directionality and hence demonstrate the isotropic behavior of the cast product.

Key words: Centrifugal casting, Ni-base alloy, Microstructure, solid solution strengthening, CRA

The low carbon 46Cr-35Ni-9Mo alloy is a solid solution strengthened cast Ni-Cr-Mo alloy additionally containing Cu and N. This alloy displays the best known mechanical properties and corrosion resistance among the existing cast low carbon Ni-Cr-Mo alloys. This work reports on the properties achievable for a centrifugally cast low carbon 46Cr-35Ni-9Mo alloy tube of 4500 mm length and 55 mm wall thickness. The phase formation after the solidification as well as the influence of heat treatment on the microstructure development is examined. The influence of the various heat treatment states on the mechanical properties as well as corrosion resistance is studied. An extensive testing program has been taken for the determination of mechanical properties on samples taken from different orientations within the centrifugally cast tube. The properties do not exhibit directionality and hence demonstrate the isotropic behavior of the cast product.

Key words: Centrifugal casting, Ni-base alloy, Microstructure, solid solution strengthening, CRA

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