Research Article
Effect of Alloying Composition on Microstructure and Mechanical Properties of Ultranarrow Gap Welded Joints of U71Mn Rail Steel
Figure 4
Microstructure of ultranarrow gap weld metals jointed: (a) base metal, (b) incomplete recrystallized zone, (c) recrystallized zone, (d) overheated zone, and (e) fusion zone.