Bake-hardenable Mg–Al–Zn–Mn–Ca sheet alloy processed by twin-roll casting
By M. Bian, Tomoyuki Sasaki, T. Nakata, Y. Yoshida, N. Kawabe, S. Kamado, K. Hono. Acta Materialia, 2018
154 citations recorded by the source corpus.
Abstract Mg–1.3Al–0.8Zn–0.7Mn–0.5Ca (wt.%) (AZMX1110) alloy sheet produced by low-cost twin-roll casting process exhibits excellent room temperature formability with a large Index Erichsen (I.E.) value of 7.8 mm at room temperature in a solution treated condition (T4). The large I.E. value is associated with a weak basal texture in the T4-condition. This alloy shows rapid age-hardening response at 170 °C, resulting in a significant increase of the flow stress from 198 MPa to 238 MPa within 20 min; such bake hardenability (BH) has never been explored in magnesium sheet alloys before. The microstructure of the bake-hardened sample, characterized by a correlative transmission electron microscopy and atom probe tomography (TEM-APT), reveals that Al, Zn and Ca atoms are segregated to basal dislocations and contribute to the strengthening by pinning dislocation motions, along with the co-clustering of these atoms. This first BH Mg sheet alloy composed of only ubiquitous elements is highly attractive for application to automotive bodies.
Subfields: Aerospace Engineering, Biomaterials, Mechanical Engineering
View Paper: https://www.semanticscholar.org/paper/263223a2fd59fb0fa0c50a805d1024d16c173751
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In Mechanical Engineering
Citations in the corpus
- Improving ductility of a Mg alloy via non-basal slip induced by Ca addition (2019, methodology): “Using this method, Cepeda-Jiménez et al. (2015, 2018) studied the influence of grain size and testing temperature on the relative activity of basal, prismatic, and pyramidal< c+a> slip modes in various Mg alloys to understand the difference in material ductility. Li and Boehlert (2013) developed a s”