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Micro‐Alloyed Wrought Magnesium for Room‐Temperature Forming
Author(s) -
Riemelmoser F. O.,
Kühlein M.,
Kilian H.,
Kettner M.,
Hänzi A. C.,
Uggowitzer P. J.
Publication year - 2007
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.200700161
Subject(s) - materials science , superplasticity , extrusion , metallurgy , microstructure , magnesium , work hardening , grain size , casting , elongation , ultimate tensile strength
In this work the development of a system of micro‐alloyed Mg–Ag–Ca–Mn–(Zr) alloys is described. It involves grain refinement throughout the production chain of direct chill casting and extrusion. After extrusion the alloys reveal a homogeneous microstructure and a fine grain size of less than 10 μm. At room temperature they show an exceptionally high elongation to fracture – of more than 25 % – and a pronounced work hardening regime. Superplastic behaviour is observed at 360 °C.
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