On the hot embrittlement of continuously-cast and transfer-bar structures in DP600 advanced high-strength steel

Abstract This study reports on ultra-high temperature tensile tests (1300–1480 °C) performed dual-phase (DP) advanced high-strength steels utilizing a Gleeble 3500 thermo-mechanical simulator. The thermomechanical results of both as-cast (AC) and transfer-bar (TB) material is presented, as well three different sample geometries, to better comprehend the effect distribution stress localization reproducibility data. show that presence pre-existing porosity in AC structure decreases strength because voids nucleation, growth coalescence, while tearing apart melt highly susceptible zones plays an important role drastically increase embrittlement TB material. It shown with long-gauge-length (LGL) geometry provides most consistent compared other geometries; this attributed combination between gentle intensified along gauge length.