Microstructure of gray cast iron FG 24 subjected to heat treatment

Authors

  • Yoel Aguirre-Breffe Empresa Importadora y Abastecedora del Níquel
  • Tomás Fernández-Columbié Institulo Superior Minero Metalurgico Moa
  • Isnel Rodríguez-González Instituto Superior Minero Metalúrgico de Moa
  • Ramón Castillo-Matos Instituto Superior Minero Metalúrgico de Moa
  • Carlos Izaguirre-Bonilla

Keywords:

gray iron, microstructure, annealing, lamellar graphite, ferrite

Abstract

The microstructural characterization of the transformations that occur in gray iron FG 24 subjected to thermal treatment was carried out. Six samples of the alloy were annealed at the same temperature (740 °C) but for different times (2 hours in one treatment and 3 hours in the other), with furnace cooling. Microstructures of lamellar graphite flakes were obtained in both treatments in a ferrite matrix, with size 4 of graphite for two hours treatment and size 3 for three hours treatment. It was evidenced that type A distribution of the graphite is maintained in both cases. This property varied in the hardness profiles from 230 HB for the standard sample, to 160 HB for the longest residence time in the furnace.

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Author Biography

Tomás Fernández-Columbié, Institulo Superior Minero Metalurgico Moa

Dr. C. en ciencias e ingeniería de materiales, procesos de manufactura, Profesor Titular del departamento de Ingeniería Mecánica

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Published

2019-01-14

How to Cite

Aguirre-Breffe, Y., Fernández-Columbié, T., Rodríguez-González, I., Castillo-Matos, R., & Izaguirre-Bonilla, C. (2019). Microstructure of gray cast iron FG 24 subjected to heat treatment. Minería & Geología, 35(1), 100–112. Retrieved from https://revista.ismm.edu.cu/index.php/revistamg/article/view/art7_No1_2019

Issue

Vol. 35 No. 1 (2019): Enero-Marzo

Section

Metalurgia física
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