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Microstructure and Mechanical Properties of Extruded Mg-7Sn-5Zn-xAl (x = 0, 1, 2 and 3 wt.%) Alloy
- Source :
- Journal of Materials Engineering and Performance. 28:2672-2680
- Publication Year :
- 2019
- Publisher :
- Springer Science and Business Media LLC, 2019.
-
Abstract
- Microstructure and mechanical properties of extruded Mg-7Sn-5Zn-xAl (x = 0, 1, 2 and 3 wt.%) alloy were investigated. The as-cast Mg-7Sn-5Zn alloy mainly comprised α-Mg dendrites, Mg2Sn and nanosized Mg-Zn phases in a Mg matrix, whereas the quasicrystal (icosahedral (I)) phase precipitated with the addition of Al. After extrusion, the grain size decreased due to dynamic recrystallization and the resulting particles were crushed and distributed along the extrusion direction. The highest tensile strength was exhibited by the extruded Mg-7Sn-5Zn-2Al alloy, which had a yield strength, ultimate tensile strength and elongation to failure of 198, 343 MPa and 18.7%, respectively. The high tensile strength was mainly attributed to grain refinement and precipitation strengthening of the Mg2Sn and icosahedral phases.
- Subjects :
- 010302 applied physics
Materials science
Mechanical Engineering
Alloy
02 engineering and technology
engineering.material
021001 nanoscience & nanotechnology
Microstructure
01 natural sciences
Grain size
Precipitation hardening
Mechanics of Materials
0103 physical sciences
Ultimate tensile strength
engineering
Dynamic recrystallization
General Materials Science
Extrusion
Composite material
Elongation
0210 nano-technology
Subjects
Details
- ISSN :
- 15441024 and 10599495
- Volume :
- 28
- Database :
- OpenAIRE
- Journal :
- Journal of Materials Engineering and Performance
- Accession number :
- edsair.doi...........31218c5f3b0004196c5ddb8396101cfb
- Full Text :
- https://doi.org/10.1007/s11665-019-04053-8