A heat-treatable Mg–Al–Ca–Mn–Zn sheet alloy with good room temperature formability. (September 2017)

• Record Type: Journal Article
• Authors: Bian, M.Z.; Sasaki, T.T.; Suh, B.C.; Nakata, T.; Kamado, S.; Hono, K.
• Is Part Of: Scripta materialia. Number 138(2017)
• Page Start: 151
• Page End: 155
• Publication Date: 2017-09
• Subjects: Magnesium alloys -- Rolling -- Guinier–Preston zone -- Formability -- Strength; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2017.05.034
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: A newly developed magnesium sheet alloy, Mg–1.1Al–0.3Ca–0.2Mn–0.3Zn (at.%), shows a large Index Erichsen value of 7.7 mm 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 1 h (T6) significantly increases the 0.2% proof strength from 144 MPa to 204 MPa. 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. Graphical abstract: