Open AccessMechanical properties and microstructure of SMAW welded and thermically treated HSLA-80 steel
Author(s) -
Leandro de Jesus Jorge,
Verônica Scarpini Cândido,
Alisson Clay Rios da Silva,
Fábio da Costa Garcia Filho,
Artur Camposo Pereira,
Fernanda Santos da Luz,
Sérgio Neves Monteiro
Publication year - 2018
Publication title -
journal of materials research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.832
H-Index - 44
eISSN - 2214-0697
pISSN - 2238-7854
DOI - 10.1016/j.jmrt.2018.08.007
Subject(s) - welding , materials science , microstructure , metallurgy , shielded metal arc welding , heat affected zone , electrode , electric resistance welding , consumables , composite material , gas metal arc welding , chemistry , business , marketing
This paper aims to present a comparison on the use of different heat treatment conditions in association with welding of a HSLA-80 steel. This investigation was carried out by multipass welding using the coated electrode process in different heat treatment conditions, with or without pre- or post-weld heating, in order to compare effects on the mechanical properties and microstructure for each condition. After welding was performed, procedures to identify microstructural phases and characterize the mechanical behavior were carried out. The results of mechanical tests and metallographic analysis were conclusive that heat treatments are not necessary to complement welding procedures of this steel. This is especially the case of the post-welding heat treatment. In fact, the application of these treatments did not significantly affect neither the microstructure nor the mechanical characteristics of the material.
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