SciELO - Scientific Electronic Library Online

 
vol.35 número1Modelación de variables eólicas mediante estimadores (A,U,Θ) multivariadosFactor de fricción de la pulpa laterítica considerada como fluido Herschel-Bulkley en régimen de flujo laminar índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Artigo

Indicadores

  • Não possue artigos citadosCitado por SciELO

Links relacionados

  • Não possue artigos similaresSimilares em SciELO

Compartilhar


Minería y Geología

versão On-line ISSN 1993-8012

Resumo

AGUIRRE-BREFFE, Yoel et al. Microstructure of gray cast iron FG 24 subjected to heat treatment. Min. Geol. [online]. 2019, vol.35, n.1, pp. 140-159. ISSN 1993-8012.

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.

Palavras-chave : gray iron; microstructure; annealing; lamellar graphite; ferrite.

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )