CORRELAÇOES DE TENACIDADE NA Z.A.C. DE SOLDADURAS NUM AÇO TEMPERADO E REVENIDO

A. Loureiro  A. Fernandes       

Anales de la Mecánica de la Fractura, nº 10 . 1993 . Pág. 217 -222
Ver (.pdf): Anales10-029

Resumen: Thc work heing reporteo had as its main aim the evaluation of correlations between COD and J toughness and Charpy V toughness, in the heat atlected zone (liAZ) of welds in a Q&T steel (WEL-TFN 60). A correlation hetween hardness and Charpy V toughness was also investigated. Welds were performed by submerged are welding in a K joint preparation in order to produce a straight fusion line facilitating the extraction of Charpy V, COD and J specimens. Charpy V toughness tends to decrease with the incrcase of prior austenite grain size and shows a linear corrclation with Hv5 hardness. Linear corrclations were also estahlished hetween charpy V toughness and COD and integral J parameters. The last two parameters can be correlated in a linear way.

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Dep. Eng. Mecánica, U. de Coimhra, Lg. D. Dinis, 30110 Coimhra, Portugal
DEMEGI, U. do Porto, R. dos Bragas, 4099 Porto Codex, Portugal