Nemesített nagyszilárdságú acélok hőhatásövezeti zónáinak előállítása szimulált hegesztési hőciklusok segítségével

Abstract

There is a growing demand for the wider application of high strength steels in automotive industry. Since these steels are mostly used in welded structures, therefore welding engineers should have deep knowledge about the welding of high strength steels, requiring technological solutions different from mild steels. When the weldability of these steels is investigated, the selection of the appropriate filler metal and the effect of welding parameters on heat affected zone should be focused on. This paper aims to present the properties of HAZ of (Q+T) high strength steel joints by the use of physical simulation, while the effect of welding parameters (t8,5/5 cooling times) on the different HAZ zones is also investigated.