Effect of cyclic stress reduction on the creep behaviour of Al-40wt%Zn alloy

Effect of Sn content on the structural and mechanical properties of Al–Si alloy

“…Assuming that fracture time, t f , varies with deformation temperature, T, according to an Arrhenius-type relation [16] of the form,…”

“…This also goes to any element added to any alloy components. Heating a quenched alloy at temperatures below the line of solubility limit gives rise to controlled precipitation of the second phase with a high level of ductility and fine structure [16]. The thermally induced intrinsic point defects in quenched alloy are determined at equilibrium concentration in terms of the energy E by Boltzmann's factor (−E/KT).…”

Transformation characteristics of Al–Ag and Al–Ag–Ti alloys

“…The activation energies of the fracture mechanisms in the present work could be calculated assuming that the fracture time, t f , varies with the aging temperature, T a , according to an Arrhenius-type relation [16]:…”

Effect of cyclic stress reduction on high temperature creep characteristics of solid solution Al−2·9 wt-Mg alloy

“…Interpretation of the phenomenon of CCA has been attempted by many authors. 8,18,24–30 The linear increase in n values with the increase in imposed CSR of different σ cy or ν (Fig. 4) may be referred to the formation of new dislocation sources in the early stages of creep in the matrix.…”

“…Cyclic creep acceleration has been observed in some metals 5–7 and alloys. 8–11 Shetty and Meshii 12 showed the existence of a threshold of CCA for the case of pure Aluminium with 100 unloading. Graiss et al 10 and Graiss and Mahmoud 11 reported respectively the same phenomenon for Al−Cu and Al−Ag systems with a partial unloading.…”