期刊
CRYSTALS
卷 11, 期 8, 页码 -出版社
MDPI
DOI: 10.3390/cryst11080862
关键词
ECAP; EBSD; Al5083 alloy; high temperature; grain refinement
资金
- NSTIP Strategic Technologies Program, Kingdom of Saudi Arabia [12 - ADV3109 - 02]
The study investigates the temperature effects on the microstructural evolution of a coarse-grained Al5083 alloy during equal channel angular pressing (ECAP). It was found that with an increase in the number of passes, grain refinement had a positive effect on the alloy's strength. Additionally, increasing the pressing temperature led to a decrease in new grain formation and an increase in normal grain size.
The temperature effects on the microstructural evolution of a coarse-grained Al5083 alloy during equal channel angular pressing (ECAP), were studied at ambient and high temperatures. The microstructural evaluation was done using an EBSD (electron backscattering diffraction) process. The grain refinement occurred as the number of passes increased, which had a positive effect on its strength. Additionally, increasing the pressing temperature leads to a decrease in the new grain's formation and an increase in the normal grain size in the third pass. This can be ascribed to the unwinding of strain similarity between the grains because of the continuous activity of dynamic recuperation and the grain limit sliding occurring at a higher temperature. The attainment of grain refinement is examined exhaustively in this study.
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