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

Abstract

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 Mg 6Zn 3Ca 2 precipitates achieved through multi-stage heat treatment and thermomechanical processing.

Authors:
 [1];  [1];  [1]
  1. The Ohio State Univ., Columbus, OH (United States)
Publication Date:
Research Org.:
United States Automotive Materials Partnership LLC (USAMP) (United States); The Ohio State Univ., Columbus, OH (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
Contributing Org.:
USAMP
OSTI Identifier:
1530849
Alternate Identifier(s):
OSTI ID: 1530486
Grant/Contract Number:  
EE0007756; EE0003583
Resource Type:
Accepted Manuscript
Journal Name:
Scripta Materialia
Additional Journal Information:
Journal Volume: 171; Journal Issue: C; Journal ID: ISSN 1359-6462
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Magnesium sheet alloys; CALPHAD; Multi-stage homogenization; Rolling; Zener grain-pinning

Citation Formats

Shi, Renhai, Miao, Jiashi, and Luo, Alan A. A new magnesium sheet alloy and its multi-stage homogenization for simultaneously improved ductility and strength at room temperature. United States: N. p., 2019. Web. doi:10.1016/j.scriptamat.2019.06.027.
Shi, Renhai, Miao, Jiashi, & Luo, Alan A. A new magnesium sheet alloy and its multi-stage homogenization for simultaneously improved ductility and strength at room temperature. United States. doi:10.1016/j.scriptamat.2019.06.027.
Shi, Renhai, Miao, Jiashi, and Luo, Alan A. Mon . "A new magnesium sheet alloy and its multi-stage homogenization for simultaneously improved ductility and strength at room temperature". United States. doi:10.1016/j.scriptamat.2019.06.027.
@article{osti_1530849,
title = {A new magnesium sheet alloy and its multi-stage homogenization for simultaneously improved ductility and strength at room temperature},
author = {Shi, Renhai and Miao, Jiashi and Luo, Alan A.},
abstractNote = {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.},
doi = {10.1016/j.scriptamat.2019.06.027},
journal = {Scripta Materialia},
number = C,
volume = 171,
place = {United States},
year = {2019},
month = {7}
}

Journal Article:
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This content will become publicly available on July 1, 2020
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