Durmuşoğlu, ŞenolTürker, MehmetTosun, Murat2024-06-132024-06-1320150025-530010.3139/120.1107972-s2.0-84978833020https://doi.org/10.3139/120.110797https://hdl.handle.net/11501/1406In this publication, investigations of HY-80 steels joined by gas metal arc welding by using different welding parameters are described. Different samples obtained from the welded joints were subjected to mechanical testing by means of tensile, hardness and impact toughness tests. The tensile test results showed that the strength of weld metal and heat affected zone were higher than of base metal. Similar Charpy impact toughness test results were obtained for weld metal and heat affected zone. Weld metal hardness was almost similar to the base metal hardness, nevertheless, the heat affected zone indicated higher values. The base metal has ferritic-perlitic structure with fine grains. Martensite needles and bainite are seen in the heat affected zone. Weld metal has martensite needles, partial bainite and residual austenite.eninfo:eu-repo/semantics/openAccessHigh Strength Low Alloyed SteelGas Metal Arc WeldingHY-80Impact ToughnessMicrostructureArticle87110Q286657WOS:000361826700006Q2