<abstract xmlns="http://www.w3.org/1999/xhtml"><p>High strength low alloy (HSLA) steels are a new generation of plain carbon steels with significantly improved mechanical properties while maintaining good weldability with common commercial techniques. Residual stress and microstructural analysis of welded HSLA Strenx 700 MC was carried out in this research. Results have shown that the welding process causes significant grain coarsening in the heat affected zone. The microstructural changes are also accompanied with creation of tensile residual stress field in the weld metal and heat affected zone, reaching up-to depth of 4 mm. Tensile residual stresses are well known for acceleration of fatigue crack initiation and together with coarse grains can lead to significant decrease of the fatigue properties of the welded structure.</p></abstract>

High strength low alloy (HSLA) steels are a new generation of plain carbon steels with significantly improved mechanical properties while maintaining good weldability with common commercial techniques. Residual stress and microstructural analysis of welded HSLA Strenx 700 MC was carried out in this research. Results have shown that the welding process causes significant grain coarsening in the heat affected zone. The microstructural changes are also accompanied with creation of tensile residual stress field in the weld metal and heat affected zone, reaching up-to depth of 4 mm. Tensile residual stresses are well known for acceleration of fatigue crack initiation and together with coarse grains can lead to significant decrease of the fatigue properties of the welded structure.

Microstructure and residual stress analysis of Strenx 700 MC welded joint

Production Engineering Archives

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{"article-title":"Microstructure and residual stress analysis of Strenx 700 MC welded joint"}

High strength low alloy (HSLA) steels are a new generation of plain carbon steels with significantly improved mechanical properties while maintaining good...

Microstructure and residual stress analysis of Strenx 700 MC welded joint

Online veröffentlicht: 25. Juni 2020

Seitenbereich: 41 - 44

Eingereicht: 10. März 2020

Akzeptiert: 15. Apr. 2020

DOI: https://doi.org/10.30657/pea.2020.26.09

Schlüsselwörter
Residual stress, High strength steel, Welding, Microstructure, Grain coarsening

© 2020 Libor Trško et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Microstructure and residual stress analysis of Strenx 700 MC welded joint

Online veröffentlicht: 25. Juni 2020

Seitenbereich: 41 - 44

Eingereicht: 10. März 2020

Akzeptiert: 15. Apr. 2020

DOI: https://doi.org/10.30657/pea.2020.26.09

SchlüsselwörterResidual stress, High strength steel, Welding, Microstructure, Grain coarsening

© 2020 Libor Trško et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Schlüsselwörter
Residual stress, High strength steel, Welding, Microstructure, Grain coarsening