High-speed extrusion of heat-treatable Mg–Al–Ca–Mn dilute alloy. (May 2015)

• Record Type: Journal Article
• Authors: Nakata, T.; Mezaki, T.; Ajima, R.; Xu, C.; Oh-ishi, K.; Shimizu, K.; Hanaki, S.; Sasaki, T.T.; Hono, K.; Kamado, S.
• Is Part Of: Scripta materialia. Volume 101(2015)
• Page Start: 28
• Page End: 31
• Publication Date: 2015-05
• Subjects: High-speed extrusion -- Mg–Al–Ca–Mn alloy -- Age hardening -- Tensile properties; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2015.01.010
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: A newly developed dilute magnesium alloy, Mg–0.27Al–0.13Ca–0.21Mn (at.%), shows extraordinary high-speed extrudability of a die-exit speed of 60 m/min. Subsequent artificial aging at 200 °C (T5) enhanced the proof stress from 170 MPa to 207 MPa due to the precipitation of Guinier Preston (G.P.) zones and weakened basal texture while keeping good ductility of 12.5%. High-speed extrusion reduces the processing cost, so the dilute Mg–Al–Ca–Mn alloy could be an industrially viable low-cost medium strength structural material.