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Deformation Behaviour and Microstructure Development of Magnesium AZ 31 Alloy During Hot and Semi‐hot Deformation
Author(s) -
Kawalla R.,
Stolnikov A.
Publication year - 2004
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.200400418
Subject(s) - superplasticity , materials science , microstructure , metallurgy , deformation (meteorology) , magnesium alloy , grain size , alloy , magnesium , composite material
Deformation properties and microstructure development between 20 and 450 °C were investigated for Magnesium AZ31 alloy. It was found that this alloy softens preferably by dynamic recrystallisation. This process starts at suitable deformation conditions above 150 °C. However, the temperature region above 250 °C is more interesting for the production process the semi‐finished products. The recrystallised grain size depends heavily on the deformation temperature. A grain size with a mean diameter smaller than 10 μm can be created below 300 °C. For further processing of Magnesium sheets, temperatures above 100 °C are suitable, but temperatures above 300 °C are responsible for superplasticity.