E. Ferrite Formation in the FZ of High-Al Steel Welds
The microstructural analysis of high-Al TRIP steel
welds revealed the formation of allotriomorphic ferrite
at the fusion lines and the grain boundaries in the FZs
(Figure 6). This ferritic formation was not observed in
the high-Si TRIP steel welds. The EDS analysis shows
that this ferrite contains higher amounts of aluminum
than the base metal (Figure 7).