Fatigue crack growth (FCG) research conducted in the near threshold regime has identified a room temperature creep crack growth damage mechanism for a fine grain powder metallurgy (PM) aluminum alloy (8009). At very low ∆K, an abrupt acceleration in room temperature FCG rate occurs at high stress ratio (R = Kmin/Kmax). The near threshold accelerated FCG rates are exacerbated by increased levels...

In this work, the influence of initial powder particle size on properties biomedical porous Ti6Al4V alloys prepared by space holder method was investigated. The results show that powders has a strong impact permeability, mechanical and corrosion behavior obtained alloys. When mean increases from dm ~ 17 ?m to 43 ?m, permeability resulted increased about 47 folds, 6.74?10-13 3.15?10-11 m2. On co...