Weld thermal simulation and its effect upon the microstructure of As-cast FeAl-based materials

Gleeble simulation studies of the effects of welding on the microstructural change of four FeAl-based materials with Mo, Zr, C, and B additions based on light optical metallography and x-ray diffraction techniques have been u ndertaken. These materials, designated Fe-Al-Mo (heat 564), Fe-Al-Mo-B (hea t 565), Fe-Al-Mo-Zr-C (heat 567), and Fe-Al-Mo-Zr-C-B (heat 568), exhibit b ehaviors suggesting that the additions of B, Zr, and C are beneficial (indi vidually or in combination) to the resistance of cracking following-weld th ermal cycles. The microstructure is significantly altered due to the additi on of Zr and C. The relation and correlation between the effects of minor a lloying elements on FeAl materials and weldability is established. Publishe d by Elsevier Science Inc.