In the present investigation, the focus is on dynamic coarsening of the equilibrium u phase in an Al-4wt pct Cu alloy. For this purpose, specimens containing a uniform u particle distribution have been produced and deformed in compression at two different temperatures (200 7C and 250 7C) and strain rates in the ranges of 200 7C to 250 7C and 1025 to 1022 s21, respectively. The particle size distribution measurements performed in a scanning microscope in back-scattered mode demonstrated a double peak behavior depending on temperature: at the lowest test temperature, the dynamic coarsening is enhanced at the highest strain rate, while at 250 7C, the coarsening seems to be affected by crushing of small and medium size particles during straining
On the effect of plastic deformation on the coarsening of theta-phase precipitation in an Al-Cu alloy
CERRI, Emanuela;
1997-01-01
Abstract
In the present investigation, the focus is on dynamic coarsening of the equilibrium u phase in an Al-4wt pct Cu alloy. For this purpose, specimens containing a uniform u particle distribution have been produced and deformed in compression at two different temperatures (200 7C and 250 7C) and strain rates in the ranges of 200 7C to 250 7C and 1025 to 1022 s21, respectively. The particle size distribution measurements performed in a scanning microscope in back-scattered mode demonstrated a double peak behavior depending on temperature: at the lowest test temperature, the dynamic coarsening is enhanced at the highest strain rate, while at 250 7C, the coarsening seems to be affected by crushing of small and medium size particles during strainingI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
