A heat-treatable Mg–Al–Ca–Mn–Zn sheet alloy with good room temperature formability

A newly developed magnesium sheet alloy, Mg–1.1Al–0.3Ca–0.2Mn–0.3Zn (at.%), shows a large Index Erichsen value of 7.7mm in a solution treated (T4) condition due to a weak basal texture developed by the trace addition of Zn. Subsequent artificial aging at 200°C for 1h (T6) significantly increases the...

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Bibliographic Details
Published in:Scripta materialia 2017-09, Vol.138, p.151-155
Main Authors: Bian, M.Z., Sasaki, T.T., Suh, B.C., Nakata, T., Kamado, S., Hono, K.
Format: Article
Language:English
Subjects:
Formability
Guinier–Preston zone
Magnesium alloys
Rolling
Strength
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Summary:A newly developed magnesium sheet alloy, Mg–1.1Al–0.3Ca–0.2Mn–0.3Zn (at.%), shows a large Index Erichsen value of 7.7mm in a solution treated (T4) condition due to a weak basal texture developed by the trace addition of Zn. Subsequent artificial aging at 200°C for 1h (T6) significantly increases the 0.2% proof strength from 144MPa to 204MPa. This improvement in strength by the T6 treatment is associated with a dense distribution of monoatomic layer Guinier–Preston zones on the basal planes of the Mg matrix. [Display omitted]
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2017.05.034