Study on Microstructure and Performance of Bead-on-Plate Weld Metal on 21CrMoV5.11 Steel Continuous Casting Roll by Submerged-Arc Overlaying
This paper examines the microstructure and performance of bead-on-plate welds on 21CrMoV5.11 steel continuous casting roll (dimensions:φ150mm×300mm) by submerged-arc overlaying under three types of welding heat (high, medium and low) input. The result shows that the microstructure of first, second and third tiers of bead-on-plate weld is martensite and ferrite, the ferrite is distributed in worm, streak or flake forms, the first tier of weld metal has slightly more ferrite, the deposited metal has even distribution of hardness, the third tier of weld metal has high hardness, when the input of welding heat is high, the bead-on-plate weld has low hardness, the wearing resistance is poor and ferrite is mostly distributed in batten form.
Pengcheng Wang, Liqun Ai, Yungang Li, Xiaoming Sang and Jinglong Bu
C. G. Ding and X. X. Meng, "Study on Microstructure and Performance of Bead-on-Plate Weld Metal on 21CrMoV5.11 Steel Continuous Casting Roll by Submerged-Arc Overlaying", Advanced Materials Research, Vols. 295-297, pp. 1647-1650, 2011