Effect of heat input on the mechanical properties of welded joints in high-strength steels. Issue 2 (1st February 2016)

• Record Type: Journal Article
• Authors: Pirinen, M.; Martikainen, Yu.; Layus, P.D.; Karkhin, V.A.; Ivanov, S.Yu.
• Is Part Of: Welding international. Volume 30:Issue 2(2016)
• Page Start: 129
• Page End: 132
• Publication Date: 2016-02-01
• Subjects: high-strength steel -- thermomechanical rolling -- linear energy -- welded joint; Welding -- Periodicals; Welding -- Automation -- Periodicals; 671.52
• DOI: 10.1080/09507116.2015.1036531
• Languages: English
• ISSNs: 0950-7116

Abstract

Abstract : Experiments were carried out to determine the properties of the welded joints in 8 mm thick high-strength steels produced by quenching and tempering and thermomechanical rolling with accelerated cooling (tensile strength 821–835 MPa). The dependence of the strength, elongation, hardness, impact energy and crack opening displacement on the heat input in the range 1.0–0.7 kJ mm − 1 was determined. The results show that the dependence of the strength of the welded joints decreases and that of the elongation increases. The heat input has only a slight effect on the impact energy and crack opening displacement in the heat-affected zone.