| Autor: |
Рябцев, І. О., Бабінець, А. А., Пащин, М. О., Сизоненко, О. М., Лентюгов, І. П., Рябцев, І. І., Соломійчук, Т. Г., Торпаков, А. С. |
| Předmět: |
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| Zdroj: |
Automatic Welding / Avtomatitcheskaia Svarka; 2023, Issue 4, p12-16, 5p |
| Abstrakt: |
Comparative analysis of the influence of modifying additives of boron or titanium carbides on the structure and properties of the metal deposited with PP-Np-25KhFMS flux-cored electrode wire was performed in this study. It is shown that addition of some modifier in the amount of 0.01% does not have any significant influence on the deposited metal structure. Their influence on the structure differs to a certain extent. Boron modifying leads to an essential reduction of the crystallite dimensions, redistribution of nonmetallic inclusions and increase of metal microhardness. Unlike that, introducing titanium carbide microadditives into the weld pool influences the kinetics of metal solidification, which results in elimination of crystallite columnarity and metal structure transformation into the cell one. It is shown that owing to the mentioned changes in the structure, the wear and heat resistance of the metal, deposited with application of both the types of modifiers, is increased. Obtained results can be used at selection of promising methods to improve the service properties of the surfaced parts, which operate under the conditions of thermal force loading and wear at metal friction against metal. 11 Ref., 4 Fig. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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