Статья

Mechanical properties and microstructure of SMAW welded and thermically treated HSLA-80 steel

Leandro de Jesus JorgeFluminense Federal University – UFF, Metallurgical Department, Rua Miguel de Frias, 9, Icaraí, 24220-900 Niteroi, RJ, BrazilVerônica Scarpini CândidoPara Federal University of Para – UFPA, Materials Engineering Department, Rua Augusto Corrêa, 1, Guama, 66075-110 Belem, PA, BrazilAlisson Clay Rios da SilvaPara Federal University of Para – UFPA, Materials Engineering Department, Rua Augusto Corrêa, 1, Guama, 66075-110 Belem, PA, BrazilFábio da Costa Garcia FilhoMilitary Institute of Engineering – IME, Materials Science Department, Praça General Tiburcio, 80, Urca, 22290-270 Rio de Janeiro, RJ, BrazilArtur Camposo PereiraMilitary Institute of Engineering – IME, Materials Science Department, Praça General Tiburcio, 80, Urca, 22290-270 Rio de Janeiro, RJ, BrazilFernanda Santos da LuzMilitary Institute of Engineering – IME, Materials Science Department, Praça General Tiburcio, 80, Urca, 22290-270 Rio de Janeiro, RJ, BrazilSérgio Neves MonteiroMilitary Institute of Engineering – IME, Materials Science Department, Praça General Tiburcio, 80, Urca, 22290-270 Rio de Janeiro, RJ, Brazil

2018en

ABI

Аннотация

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. Keywords: Mechanical properties, Heat treatment, Microstructure, Mechanical testing

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Идентификаторы

DOI: 10.1016/j.jmrt.2018.08.007

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar