Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 764, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2019.138144
Keywords
Magnesium alloy; Extrusion; Dynamic recrystallization
Categories
Funding
- National Key Research and Development Program of China [2016YFB0301100]
- National Natural Science Foundation of China [51531002, 51474043]
- Natural Science Foundation of Chongqing [cstc2017jcyjBX0040]
- Chongqing Academician Special Fund [cstc2018jcyj-yszxX0007]
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Highly-uniform ultrafine Mg-3Al-1Zn alloy was successfully fabricated by a simple conventional extrusion method called continuous forging extrusion (CFE). After CFE, the average grain size of Mg-3Al-1Zn alloy was refined to 0.6 mu m. The ultra-fine grain (UFG) AZ31 alloy exhibited an excellent combination of yield strength of 307 MPa and ductility of 26.3%. The improved mechanical properties were mainly attributed to grain boundary strengthening and texture weakening. The formation of dynamic recrystallized submicron grain in the CFE was also discussed.
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