EFFECT OF CR IN CARBIDES PRECIPITATION IN NODULAR IRON CLASS 100-70-03

1 Garcia H. Jose
Co-authors:
1 Mayoga V. Alvaro. 1 Ruiz T. Agustín
Institution:
1 Departamento de Ingeniería Metalúrgica, Facultad de Química, Universidad Nacional Autónoma de México, Av. Universidad 3000, Coyoacan, Cd. de México 04510. Tel 0052 55 5622 5239, jagarcia@unam.mx
Conference:
26th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 24th - 26th 2017
Proceedings:
Proceedings 26th International Conference on Metallurgy and Materials
Pages:
156-161
ISBN:
978-80-87294-79-6
ISSN:
2694-9296
Published:
9th January 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
46 views / 24 downloads
Abstract

This paper presents the results of the effect of Cr in the precipitation of carbides in nodular iron class 100-70-03. In this study was considered the average nominal chemical composition suggested by the ASTM standard and added with content between 0.5 to 3 %Cr. Nodular iron was manufactured in induction furnace using conventional raw materials. "Y" casting blocks were obtained in silicate sand moulds. Thermocouples were placed in Y blocks to obtain the corresponding cooling curves. "Y" castings were cut to evaluate the fraction and distribution of carbides through the casting as a function of the amount of Cr in the alloy. The cooling curves were analyzed so that on the basis of experimental eutectic temperature with the fraction of carbides precipitated by the presence of Cr. These nodular ironThis nodular iron could be applied to CADI manufacturing components with high hardness and wear resistance.

Keywords: nodular iron, carbides, thermal analysis, whitening elements
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