Resistencia a la propagación de fisuras por fatiga en carburos cementados

Y. Torres; S. Rodríguez; L. Lianes; M. Anglada

doi:10.3989/revmetalm.2001.v37.i2.455

Fatigue crack propagation resistance of cemented carbides

Authors

Y. Torres Universitat Politécnica de Catalunya, Departament de Ciencia deis Materials i Enginyeria Metallúrgica
S. Rodríguez Universitat Politécnica de Catalunya, Departament de Ciencia deis Materials i Enginyeria Metallúrgica
L. Lianes Universitat Politécnica de Catalunya, Departament de Ciencia deis Materials i Enginyeria Metallúrgica
M. Anglada Universitat Politécnica de Catalunya, Departament de Ciencia deis Materials i Enginyeria Metallúrgica

DOI:

https://doi.org/10.3989/revmetalm.2001.v37.i2.455

Keywords:

Fatigue, Crack propagation, Cemented carbides, WC-Co, Cyclic compression,

Abstract

It is studied the fatigue crack growth behavior of two grades of WC-Co cemented carbides, both with a 10%_wt of Co but with different carbide grain size, 0,8 and 2,5 μm. Crack growth kinetics, measured under different load ratios, is described using an alternative form to the Paris equation. Hence, it is used a model that takes into account both maximun and range of the applied stress intensity factor, K_max and ΔK respectively, within an equation of the form da/dN= f (K_max,ΔK). It is observed a significant dependence with respect to K_max, yielding evidence of the prominence of static modes of rupture. Under these considerations, the fatigue crack growth sensitivity of the materials studied is evaluated. Finally, the damage mechanisms associated with stable and unstable fatigue crack propagation are analyzed.

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Published

2001-04-30

How to Cite

Torres, Y., Rodríguez, S., Lianes, L., & Anglada, M. (2001). Fatigue crack propagation resistance of cemented carbides. Revista De Metalurgia, 37(2), 145–149. https://doi.org/10.3989/revmetalm.2001.v37.i2.455

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Issue

Vol. 37 No. 2 (2001)

Section

Articles

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