Fusion welding creates rapid heat cycle: T peaks above T_m at fusion-zone, T_g < T_peak < T_m in HAZ; grain growth + carbide precipitation + martensite formation possible; HAZ-fracture is common failure mode.
Fusion welding creates rapid heat cycle: T peaks above T_m at fusion-zone, T_g < T_peak < T_m in HAZ; grain growth + carbide precipitation + martensite formation possible; HAZ-fracture is common failure mode.