Assessment of the hardness of S890QL material welded joins
The need to reduce the mass of products manufactured by welding processes has led to the replacement of the basic steel materials, such as construction steels, by steels with high mechanical properties, such as hard and brittle steels. The increase of the mechanical properties but also of the all...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
THOT Publishing House
2024-11-01
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| Series: | Journal of Research and Innovation for Sustainable Society |
| Subjects: | |
| Online Access: | https://jriss.4ader.ro/wp-content/uploads/2024/11/13.-Adrian-Florea-Corneliu-Rontescu-Ana-Maria-Bogatu-Dumitru-Titi-Cicic-Assessment-of-the-hardness-of-S890QL-material-welded-joins%E2%80%8B.pdf |
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| Summary: | The need to reduce the mass of products manufactured by welding processes has led
to the replacement of the basic steel materials, such as construction steels, by steels with high
mechanical properties, such as hard and brittle steels. The increase of the mechanical properties
but also of the alloying degree has led to a decrease in the weldability of these materials. The
present paper presents the analysis of the welding possibilities with the gas metal arc welding
process of S890QL steel. The paper analyzes the hardness values obtained in the case of welding
technologies using two preheating temperature values (100 and 1500C) in the context of the
variation of the cooling time between 800 and 5000C. The values resulting from the hardness
measurements performed indicate that no significant changes in hardness occur in the
characteristic areas of the weld bead, the material not being subjected to additional hardening
processes. To analyze the weldability of the S890QL material, the results presented in the paper
must be correlated with the results of the mechanical tests performed on the welded joints.
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| ISSN: | 2668-0416 |