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Effect of normalizing heat treatment on the mechanical behaviour of low-alloy steel weld metals

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Abstract

In equipment manufacturing there are occasions when the base metal need to be hot or cold worked prior to welding. After welding, the components have to be submitted to a normalizing heat treatment in order to recover the original mechanical properties. In this work, low alloy steel weld metals have been studied in the as-welded condition and after normalizing heat treatment. It was observed a high decrease of the tensile properties after normalizing. The toughness increases after normalizing heat treatment, except for one weld metal where a great content of martensite-austenite-bainite constituent was formed.

Résumé

Dans la fabrication d'équipements, il y a des moments où le métal non précieux a besoin d'être travaillé à chaud ou à froid avant soudage. Après soudage, les composants doivent être soumis à un traitement thermique de normalisation afin de récupérer les propriétés mécaniques originales. Dans ce travail, des aciers faiblement alliés par soudure ont été étudiés pour les bruts de soudage et après normalisation du traitement thermique. On a observé une forte diminution des propriétés de tension après normalisation. La rigidité augmente après normalisation du traitement thermique, sauf pour un métal de soudure où est apparue une importante teneur en martensite, austénite et bainite.

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Authors and Affiliations

  1. Programa de Engenharia Metalúrgica e de Materiais, Universidade Federal do Rio de Janeiro (COPPE/UFRJ), Rio de Janeiro, RJ, Brazil

    V. B. Trindade, J. C. Payão-Filho & A. S. Guimarães

  2. Laboratório de Materiais Avançados, Universidade Estadual do Norte Fluminense (UENF), Campos dos Goytacazes, RJ, Brazil

    R. P. R. Paranhos

Authors
  1. V. B. Trindade
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  2. J. C. Payão-Filho
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  3. A. S. Guimarães
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  4. R. P. R. Paranhos
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Trindade, V.B., Payão-Filho, J.C., Guimarães, A.S. et al. Effect of normalizing heat treatment on the mechanical behaviour of low-alloy steel weld metals. Mat. Struct. 38, 353–357 (2005). https://doi.org/10.1007/BF02479301

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  • DOI: https://doi.org/10.1007/BF02479301

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