PSI - Issue 16

Ihor Dmytrakh et al. / Procedia Structural Integrity 16 (2019) 113–120 Ihor Dmytrakh et al. / Structural Integrity Procedia 00 (2019) 000 – 000

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hydrogen on the strength and durability of structural metal materials has several mechanisms that can be realized and either act independently or coexi st simultaneously (Fig. 9; zones І, ІІ, ІІІ).

Fig. 9. Schematic diagram, which demonstrates the effects of hydrogen concentration on the resistance to fracture of ferrite-pearlitic pipeline steels: 1 – σ y = f 1 ( C H ); 2 – U f = f 2 ( C H ); 3 – d a /d N = f 3 ( C H ). Hence, it is necessary to develop and substantiate new concepts of conditions required for the realization of these mechanisms in the processes of deformation and fracture of ferritic-pearlitic low-alloyed steels.

Acknowledgements

Presented study was conducted within the project number 10- ІІІ -141-18 of Fundamental Research Programme of National Academy of Sciences of Ukraine.

References

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