Effect of matrix and atmosphere on the creep deformation of aluminum alloy matrix composites

A new model for the description of creep behaviour of aluminium-based composites reinforced with nanosized particles

“…The mean dislocation free path can be easily calculated by Eqn. (13), obtaining L=167 and 112 nm. The room temperature stress-strain curves for the two materials became essentially flat at a strain of 7% (rupture occurred at strains close to 30 and 10%, respectively) so, being the strain hardening stage already concluded at these low strains, Rmax can be obtained from the ultimate tensile strength, as 1.07 RUTS (Rmax= 482 and 589 MPa).…”

“…Since <<dg<< L, after substitution in Eqn. (13), L*   is obtained. Thus, in this material, the dislocation mean free path is equivalent to the nearest-neighbour particle spacing.…”

“…Up to a decade ago, the creep response of Aluminium-based metal matrix composite was investigated in many studies [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. In general, experimental data (minimum creep rate m  , as a function of applied stress  and temperature T) were described by a modified form of the well-known equation…”

Residual stress and damage development in the aluminium alloy EN AW-6061 particle reinforced with Al2O3 under thermal fatigue loading

“…In general, failure of 6061/Al 2 O 3 /22 p under creep loading starts with delamination of interfaces. At creep under pressure, dislocation climbing is the dominant mechanism instead of dislocation slipping [19][20][21].…”