Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 800, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2020.140204
Keywords
Semi-solid extrusion; Magnesium alloys; Mechanical properties; Microstructure; Texture
Categories
Funding
- National Key Research and Development Program of China [2016YFB0301101]
- National Natural Science Foundation of China [51571040, U1764253, 51531002]
Ask authors/readers for more resources
During semi-solid extrusion, AZ31 magnesium alloy exhibits a higher nucleation rate for new fine grains and limited twinning activation, resulting in a homogeneous microstructure and improved mechanical properties.
The microstructure evolution and mechanical properties of AZ31 magnesium alloy during semi-solid extrusion (SSE) has been studied and compared with traditional extrusion (TE). The results show that non-equilibrium crystallization and plastic deformation occur simultaneously in the semi-solid extrusion process. Throughout the SSE process, the nucleation rate of new fine grains is significantly higher than that of the TE, which is the result of combined nucleation of crystallization and dynamic recrystallization. Twinning can be hardly activated during the SSE process, because the restraint between deformed grains is largely reduced due to the good fluidity of the semi-solid Mg alloy. The Mg alloys extruded by the SSE is characterized for homogeneous microstructure with fine grain size, weakened texture and improved mechanical properties.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available