Open AccessButt welding of thin sheets of S960MC steel
Author(s) -
Miloš Mičian,
Martin Frátrik,
Libor Trško,
Marek Gucwa,
Jerzy Winczek,
Łukasz Skroński
Publication year - 2021
Publication title -
przegląd spawalnictwa
Language(s) - English
Resource type - Journals
eISSN - 2449-7959
pISSN - 0033-2364
DOI - 10.26628/wtr.v93i2.1130
Subject(s) - welding , materials science , ultimate tensile strength , metallurgy , heat affected zone , butt joint , joint (building) , composite material , indentation hardness , butt welding , microstructure , structural engineering , engineering
The paper presents the application of MAG welding to TMCP steels (thermo-mechanically controlled processed) grade S960MC and 3 mm thick. In the analyzed joints, the research focused on their mechanical properties and changes in the heat-affected zone (HAZ) that occur in this type of steels. The hardness and tensile strength tests carried out showed a significant decrease in the properties of the joint compared to the declared values of the base material and the filler material used in the tests. In the case of hardness, it was a decrease of 34% in HAZ and by 15-21% in relation to the strength limit. Changes in HAZ properties of a joint correlate with changes in its structure.