Three-Dimensional Morphology and Growth Behavior of Acicular Ferrite in Low Carbon Steel Weld

Proeutectoid ferrite and cementite transformations in steels

“…Three-dimensional analysis of acicular ferrite in a gas metal arc weld deposit (0.078C, 0.90Si, 1.57Mn, 0.03Ti, 0.0320O, 0.0050Ni, 0.0059S) isothermally transformed at 570°C for short times (1, 5 s) (Wu and Enomoto, 2005;Wu, 2006) clearly shows the nucleation site is on non-metallic inclusions and 3D morphology is that of a Widmanstätten Star (see Fig. 7.13).…”