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Microstructure evolution of AZ31 Mg alloy during change channel angular extrusion |
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| Authors: | Yu Liu Tianmo Liu |
| Affiliation: | LIU Yu1,2,LIU Tianmo2 (1.National Key Laboratory For Nuclear Fuel And Materials,Nuclear Power Institute of China,Chengdu 610041,China,2.National Engineering Research Center for Magnesium Alloys,Chongqing University,Chongqing 400045,China) |
| Abstract: | Microstructure evolution of AZ31 Mg alloy during change-channel angular extrusion (CCAE) was investigated. The grains of AZ31 Mg alloy were refined significantly from 500 mm to 15 mm after CCAE deformed at 523 K. Dislocations were induced at the initial stage of extrusion and they rearranged themselves to form dislocation boundaries and sub-grain boundaries during deformation. When the specimen through the horizontal change channel with the strain increased, the sub-boundaries evolved to high angle grain bo... |
| Keywords: | AZ31 Mg alloy grain refinement change channel angular extrusion (CCAE) continuous dynamic recovery and recrystallization (CDRR) |
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