A new magnesium sheet alloy and its multi-stage homogenization for simultaneously improved ductility and strength at room temperature

Shi, Renhai; Miao, Jiashi; Luo, Alan A.

doi:10.1016/j.scriptamat.2019.06.027

A new magnesium sheet alloy and its multi-stage homogenization for simultaneously improved ductility and strength at room temperature

Journal Article · Mon Jul 01 00:00:00 EDT 2019 · Scripta Materialia

DOI:https://doi.org/10.1016/j.scriptamat.2019.06.027· OSTI ID:1530849

Shi, Renhai ^[1]; Miao, Jiashi ^[2]; Luo, Alan A. ^[2]

The Ohio State Univ., Columbus, OH (United States); The Ohio State University
The Ohio State Univ., Columbus, OH (United States)

We report that a new Mg-2Zn-0.3Ca-0.2Ce-0.1Mn (ZXEM2000) alloy and a multi-stage homogenization process have been designed and developed based on CALculation of Phase Diagram (CALPHAD) modeling results and experimental validation. The new sheet alloy offers an excellent combination of ductility (about 29% elongation) and yield strength (157 MPa), promising room-temperature forming applications. Microstructure characterization reveals that the exceptional properties of this alloy are mainly attributed to the weak basal texture, fine average grain size and high density of nano-scale Mn and Mg₆Zn₃Ca₂ precipitates achieved through multi-stage heat treatment and thermomechanical processing.

View Accepted Manuscript (DOE)

Research Organization:: The Ohio State Univ., Columbus, OH (United States); United States Automotive Materials Partnership LLC (USAMP) (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)

Contributing Organization:: USAMP

Grant/Contract Number:: EE0003583; EE0007756

OSTI ID:: 1530849

Alternate ID(s):: OSTI ID: 1530486

Journal Information:: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: C Vol. 171; ISSN 1359-6462

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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A new magnesium sheet alloy and its multi-stage homogenization for simultaneously improved ductility and strength at room temperature

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References (31)

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