Fracture and Structural Integrity e-ISSN 1971-8993 Open access
Fracture Vol. 14, No. 51 (2020)

Microstructural damage evaluation of ferritic-ausferritic spheroidal graphite cast iron

Author and affiliation details
DOI
10.3221/IGF-ESIS.51.36
Pages
477-485
Published
Published inVol. 14, No. 51 (2020)Go to the issue

Abstract

The goal of this work is to improve the understanding of the relation between the microstructural characteristics of Intercritical Austempered Ductile Cast Iron (IADI) and the damage micromechanisms observed during its tensile loading. The experimental methodology involves heat treatments to obtain IADI and the assessment of the damage mechanisms (sequence and occurrence) during step by step tensile testing. The damage evaluation was carried out by observing the surface of the tensile test specimen with optical and scanning electron microscopy.

The results show that small cracks start forming soon after the yield stress is surpassed. The crack initiation is preferentially located at matrix-nodule interface. As loading increases, cracks also develop at the ferritic grain boundaries and the ausferritic/ferritic interfaces. Consequently, at higher strain values, a competition between the plastic deformation on internodular zones and crack propagation along ausferritic phase is observed.

Finally, the final fracture is produced by the propagation of cracks across the internodular ligaments and through the ausferritic/ferritic interface that later coalesce into a single dominant crack leading to the material failure.

Keywords

Article history

  1. ReceivedUntil the next stage: 1 day
  2. RevisedUntil the next stage: 0 days
  3. AcceptedUntil the next stage: 0 days
  4. Published

How to cite

APA

Fernandino, D. O., Di Cocco, V., Tenaglia, N., Bellini, C., Iacoviello, F., & Boeri, R. E. (2019). Microstructural damage evaluation of ferritic-ausferritic spheroidal graphite cast iron. Fracture and Structural Integrity, 14(51), 477–485. https://doi.org/10.3221/IGF-ESIS.51.36

IEEE

D. O. Fernandino, V. Di Cocco, N. Tenaglia, C. Bellini, F. Iacoviello, and R. E. Boeri, “Microstructural damage evaluation of ferritic-ausferritic spheroidal graphite cast iron,” Fracture and Structural Integrity, vol. 14, no. 51, pp. 477–485, 2019, doi: 10.3221/IGF-ESIS.51.36.

MLA

Fernandino, Diego Omar, et al. “Microstructural damage evaluation of ferritic-ausferritic spheroidal graphite cast iron.” Fracture and Structural Integrity, vol. 14, no. 51, 2019, pp. 477–485. https://doi.org/10.3221/IGF-ESIS.51.36.

Chicago

Fernandino, Diego Omar, Vittorio Di Cocco, Nicolas Tenaglia, Costanzo Bellini, Francesco Iacoviello, and Roberto Enrique Boeri. 2019. “Microstructural damage evaluation of ferritic-ausferritic spheroidal graphite cast iron.” Fracture and Structural Integrity 14 (51): 477–485. https://doi.org/10.3221/IGF-ESIS.51.36.

Harvard

Fernandino, D.O., Di Cocco, V., Tenaglia, N., Bellini, C., Iacoviello, F. and Boeri, R.E. (2019) ‘Microstructural damage evaluation of ferritic-ausferritic spheroidal graphite cast iron’, Fracture and Structural Integrity, 14(51), pp. 477–485. doi: 10.3221/IGF-ESIS.51.36.

Vancouver

Fernandino DO, Di Cocco V, Tenaglia N, Bellini C, Iacoviello F, Boeri RE. Microstructural damage evaluation of ferritic-ausferritic spheroidal graphite cast iron. Fracture and Structural Integrity. 2019;14(51):477-485. doi:10.3221/IGF-ESIS.51.36

BibTeX

@article{fernandino2019, author = {Fernandino, Diego Omar and Di Cocco, Vittorio and Tenaglia, Nicolas and Bellini, Costanzo and Iacoviello, Francesco and Boeri, Roberto Enrique}, title = {Microstructural damage evaluation of ferritic-ausferritic spheroidal graphite cast iron}, journal = {Fracture and Structural Integrity}, year = {2019}, volume = {14}, number = {51}, pages = {477--485}, doi = {10.3221/IGF-ESIS.51.36}, url = {https://doi.org/10.3221/IGF-ESIS.51.36}, issn = {1971-8993} }

RIS

TY - JOUR AU - Fernandino, Diego Omar AU - Di Cocco, Vittorio AU - Tenaglia, Nicolas AU - Bellini, Costanzo AU - Iacoviello, Francesco AU - Boeri, Roberto Enrique TI - Microstructural damage evaluation of ferritic-ausferritic spheroidal graphite cast iron JO - Fracture and Structural Integrity T2 - Fracture and Structural Integrity PY - 2019 DA - 2019/12/12 VL - 14 IS - 51 SP - 477 EP - 485 DO - 10.3221/IGF-ESIS.51.36 UR - https://doi.org/10.3221/IGF-ESIS.51.36 SN - 1971-8993 ER -

Licence

Copyright © 2020 Diego Omar Fernandino, Vittorio Di Cocco, Nicolas Tenaglia, Costanzo Bellini, Francesco Iacoviello, Roberto Enrique Boeri.

Copyright 
Authors are allowed to retain both the copyright and the publishing rights of their articles without restrictions.  

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