PSI- Issue 9

Jesús Toribio / Procedia Structural Integrity 9 (2018) 323–328 Author name / Structural Integrity Procedia 00 (2018) 000–000

327

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6. Hydrogen effects on anisotropic fracture behavior and crack path deflection

In a hydrogen environment ( when hydrogen is the circumstance ) the phenomenon of anisotropic fracture and crack path deflection is even more enhanced, since hydrogen promotes crack deviation and mixed mode propagation as a consequence of lamellar orientation and alignment. Therefore, the anisotropy in hydrogen assisted cracking resistance has evident consequences in the matter of crack paths , producing fracture deflection . Papers on this topic were published by Toribio and Ovejero (1999, 2000, 2001, 2007) and Toribio (2017b, 2017c).

7. A Picassian Approach

The crack paths in heavily cold drawn pearlitic steels develop in mixed mode following a deflected or kinked crack path, so that it can be associated with the change of viewpoint of the cubist painting by Picasso (Fig. 6).

Fig. 6. Painting by Picasso ( Three musicians )

Acknowledgements

This paper is a review of previous research by the author. Acknowledgement is gratefully given to the co-authors of previous papers with special mention to Beatriz González and Juan-Carlos Matos of the University of Salamanca.

References

Toribio, J., 2002. Evolution of Fracture Behaviour in Progressively Drawn Pearlitic Steel. ISIJ International 42, 656-662. Toribio, J., 2004. Microstructure-Based Modelling of Fracture in Progressively Drawn Pearlitic Steels. Engineering Fracture Mechanics 71, 769 777. Toribio, J., 2008. Delamination Fracture of Prestressing Steel: An Engineering Approach, Engineering Fracture Mechanics 75, 2683-2694. Toribio, J., 2017a. Structural Integrity of Progressively Cold-Drawn Pearlitic Steels: From Raffaello Sanzio to Vincent van Gogh , Procedia Structural Integrity 3 (2017) 3-10. Toribio, J., 2017b. Stress Corrosion Cracking of Progressively Cold-Drawn Pearlitic Steels: From Tintoretto to Picasso , Procedia Structural Integrity 5 (2017) 1439-1445. Toribio, J., 2017c. Hydrogen Effects on Progressively Cold-Drawn Pearlitic Steels: Between Donatello and Michelangelo , Procedia Structural Integrity 5 (2017) 1446-1453. Toribio, J., Ayaso, FJ., 2001. Fracture Performance of Progressively Drawn Pearlitic Steel under Triaxial Stress States. Materials Science 37, 707-717. Toribio, J., Ayaso, FJ,, 2002a. Investigation of the Type of Cleavage Related to Anisotropic Fracture in Heavily Drawn Steels. Journal of Materials Science Letters 21, 1509-1512. Toribio, J., Ayaso, FJ,, 2002b. Micromechanics of Fracture in Notched Samples of Heavily Drawn Steel. International Journal of Fracture 115, L29-L34. Toribio, J., Ayaso, FJ,, 2003. Anisotropic Fracture Behavior of Cold Drawn Steel: A Materials Science Approach. Materials Science and Engineering A343, 265-272. Toribio, J., Ayaso, FJ,, 2004. Image Analysis of Exfoliation Fracture in Cold Drawn Steel. Materials Science and Engineering A387-389, 438 441.