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Effect of Zn on microstructure, texture and mechanical properties of Al-Mg-Si-Cu alloys with a medium number of Fe-rich phase particles
- Source :
- Materials Characterization. 134:123-133
- Publication Year :
- 2017
- Publisher :
- Elsevier BV, 2017.
-
Abstract
- The effect of Zn on the microstructure, texture evolution and mechanical properties of Al-Mg-Si-Cu alloys with a medium number of Fe-rich phase particles was investigated using tensile testing machine, optical microscopy (OM), scanning electron microscope (SEM), transmission electron microscope (TEM) and X-ray diffractometer (XRD) in the present study. The results show that Zn addition has a significant influence on the final mechanical properties, but a slight effect on microstructure and final recrystallization texture. Zn addition is favorable to increase yield strength, ultimate tensile strength and elongation, however it is detrimental to improve r value and reduce Δr value. During the thermomechanical processing, the microstructure almost has nothing to do with Zn addition. However, Zn could prevent the secondary phase particles from precipitating during intermediate annealing. In contrast to the alloy sheet without Zn, the alloy sheet with 1.0 wt% Zn always has weaker textures before final cold rolling, but a stronger texture after experiencing final cold rolling. After solution treatment, they almost possess the same recrystallization texture. Finally, the effect of Zn addition on the recrystallization texture was discussed. Their similar recrystallization texture can be attributed to the similar microstructure, which was caused by the medium number of Fe-rich phase particles.
- Subjects :
- 010302 applied physics
Materials science
Annealing (metallurgy)
Scanning electron microscope
Mechanical Engineering
Metallurgy
Recrystallization (metallurgy)
02 engineering and technology
021001 nanoscience & nanotechnology
Condensed Matter Physics
Microstructure
01 natural sciences
law.invention
Optical microscope
Mechanics of Materials
law
0103 physical sciences
Ultimate tensile strength
Thermomechanical processing
General Materials Science
0210 nano-technology
Tensile testing
Subjects
Details
- ISSN :
- 10445803
- Volume :
- 134
- Database :
- OpenAIRE
- Journal :
- Materials Characterization
- Accession number :
- edsair.doi...........8b0b15068e81153a0644991500346429