Resumo

VIADA-ESTEVEZ, Aurelia  e  FERNANDEZ-COLUMBIE, Tomás H.. Performance of the microstructure of cast iron joints with different input material. Min. Geol. [online]. 2020, vol.36, n.1, pp. 92-105.  Epub 31-Mar-2020. ISSN 1993-8012.

Performance of the microstructure cast iron joints with different material was characterized after applying the thermal welding cycle. For the metallurgical joint in cast iron plates 10 millimeters thick and V preparation at 60 °, E 309L-16, UTP 8 and UTP 86 FN electrodes were selected. With E 309L - 16, the solidification is of a Widmanstátten or acicular austenite morphology with presence of carbides and with UTP 8 a ferritic matrix is obtained with formation carbides inside. Both are prone to cracking; for the UTP 86 FN an austenitic structure was obtained with a small amount of delta ferrite and a better solidification.

Palavras-chave : microstructural analysis; solidification; welding; molten iron; input material.

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