Papel clave de las pseudocolonias perlíticas en la fractura anisótropa de muestras entalladas en “V” de aceros perlíticos trefilados

  1. Jesús Toribio 1
  2. Javier Ayaso 1
  3. Rocío Rodríguez 1
  4. Iván Balboa 1
  1. 1 Grupo de Investigación en Fractura e Integridad Estructural (GIFIE), Universidad de Salamanca (USAL)
Aldizkaria:
Revista española de mecánica de la fractura

ISSN: 2792-4246

Argitalpen urtea: 2022

Zenbakia: 3

Orrialdeak: 57-62

Mota: Artikulua

Beste argitalpen batzuk: Revista española de mecánica de la fractura

Garapen Iraunkorreko Helburuak

Laburpena

This paper describes the anisotropic fracture behaviour of V-shaped notched samples of heavily cold drawn pearlitic steels, analyzing the key role of a new (non-conventional) microstructural unit in such steels: the pearlitic pseudocolony, a special colony in which the lamellae are not oriented along the wire axis or cold drawing direction (contrarily to what happens in the normal conventional colonies), thereby producing a clearly anomalous (very high) local interlamellar spacing, making the pseudocolonies weakest units or potential fracture initiation loci and promoting crack deflection associated with anisotropic fracture behaviour and mixed-mode propagation.