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Microstructural Evolution of Semisolid 6063 Aluminum Alloy Prepared by Recrystallization and Partial Melting Process
- Source :
- Journal of Materials Engineering and Performance. 26:4354-4363
- Publication Year :
- 2017
- Publisher :
- Springer Science and Business Media LLC, 2017.
-
Abstract
- Radial forging (RF) was proposed as a novel deformation method to prepare semisolid 6063 aluminum alloy in the recrystallization and partial melting (RAP) process. The effects of area reduction rate, isothermal holding temperature and time on the microstructural evolution of RF-deformed 6063 aluminum alloy were investigated. Results showed that RF can be successfully introduced in RAP process to prepare large semisolid 6063 aluminum alloy bar. With the increase of the area reduction rate, the average grain size firstly decreased and then no significant change occurred. Meanwhile, the spheroidization degree of solid grains firstly increased rapidly, and then increased slowly. The effects of isothermal holding temperature and time are similar, with the increase of the isothermal holding temperature or time, the average grain size initially decreased but then increased; and the spheroidization degree of solid grains gradually increased. High-quality semisolid 6063 aluminum alloy can be prepared with 70% area reduction rate and subsequent semisolid isothermal treatment (SSIT) at 630 °C for 10 min. The coarsening rate constant was 5185.2 µm3/s at 630 °C. Additionally, a strong deformation texture was created in the RF-deformed alloy with 70% area reduction rate, which was transformed to a weakened texture following the SSIT process.
- Subjects :
- 010302 applied physics
Materials science
Mechanical Engineering
Metallurgy
Alloy
Partial melting
Recrystallization (metallurgy)
02 engineering and technology
engineering.material
021001 nanoscience & nanotechnology
Microstructure
01 natural sciences
Grain size
Isothermal process
Reaction rate constant
Mechanics of Materials
0103 physical sciences
engineering
6063 aluminium alloy
General Materials Science
0210 nano-technology
Subjects
Details
- ISSN :
- 15441024 and 10599495
- Volume :
- 26
- Database :
- OpenAIRE
- Journal :
- Journal of Materials Engineering and Performance
- Accession number :
- edsair.doi...........b68291c4802b3b582c7fbae52b38dedd