Fatigue particle coarsening in AlZn alloy

Dynamic precipitation during cyclic deformation of an underaged Al–Cu alloy

“…This is instability in the precipitate microstructure although perhaps not exactly how Orowan had envisaged. However, genuine cases of fatigue induced coarsening (or overaging) have also been observed [17][18][19] in accordance with Orowan's suggestions. Observations of room temperature coarsening of a precipitate microstructure during fatigue deformation raise the question of what mechanism facilitates the accelerated mass transport.…”

Surface Severe Plastic Deformation of an Orthopedic Ti–Nb–Sn Alloy Induces Unusual Precipitate Remodeling and Supports Stem Cell Osteogenesis through Akt Signaling

“…Such coarsening of precipitates after room temperature deformation is very intriguing and has not been reported earlier in β-Ti alloys. Plastic strain has been reported to lead to effects such as nucleation, growth, coarsening and dissolution of shearable precipitates in Al alloys. − The process of dislocation cutting through the precipitates during plastic deformation can lead to dissolution of precipitates. ,, The antiphase boundaries created in the ordered precipitates or the additional precipitate matrix interfaces created in disordered precipitates after cutting by dislocations increase their energy, thereafter leading to dissolution . Consequently, a supersaturated solid solution is formed in the matrix .…”

“…28−32 The process of dislocation cutting through the precipitates during plastic deformation can lead to dissolution of precipitates. 28,29,32 The antiphase boundaries created in the ordered precipitates or the additional precipitate matrix interfaces created in disordered precipitates after cutting by dislocations increase their energy, thereafter leading to dissolution. 28 Consequently, a supersaturated solid solution is formed in the matrix.…”