Very high cycle fatigue of D16T aluminum alloy
Langue
EN
Article de revue
Ce document a été publié dans
Physical Mesomechanics, vol. 24, no. 1, p. 77-84. 2021, vol. Vol. 24, n° no. 1, p. p. 77-84
Résumé en anglais
The paper provides a fractographic analysis of fatigue cracking in D16T aluminum alloy undervery high cycle fatigue at a frequency of 20 kHz. The analysis shows that in the range of 2.8x10^8 to 5.1x10^9 cycles to failure, ...Lire la suite >
The paper provides a fractographic analysis of fatigue cracking in D16T aluminum alloy undervery high cycle fatigue at a frequency of 20 kHz. The analysis shows that in the range of 2.8x10^8 to 5.1x10^9 cycles to failure, the material reveals cracks on and beneath its surface with their subsurface site developing through intergranular fracture at triple junctions or smoothly faceted transgranular fracture. The main crack develops by shear with the formation of differently oriented facets against which a cascade of oriented and misoriented dimples appears. Such dimples are left by spherical and ellipsoidal particles which are formed, displaced, and intruded into both fracture sides as the crack edges come in contact.< Réduire
Mots clés en anglais
Very high cycle fatigue
Aluminum alloy
Fractography
Fracture mechanisms
Spherical particles
Unités de recherche