Microstructural analysis and study of the metal deposit hardness alloyed with rare-earth elements

ABSTRACT

The article presents the results of chemical analysis, microstructural studies, hardness measurements of the deposited layers obtained by manual arc welding through the use of the welding-depositing materials containing rare-earth and rare elements from the Tomtor field and electrodes covered with UONI 13/55. The positive effect of the modifying additive with REM on the formation of a crushed structure in the zone of the metal deposit and at the fusion boundary is indicated. A slight increase in hardness in the metal deposit alloyed with rare earth metals is detected.

KEYWORDS:

• Microstructure
• hardness
• deposition
• metal deposit
• rare-earth elements
• flux-cored electrode