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Title: Strong, Ductile, and Thermally Stable bcc-Mg Nanolaminates

Magnesium has attracted attention worldwide because it is the lightest structural metal. However, a high strength-to-weight ratio remains its only attribute, since an intrinsic lack of strength, ductility and low melting temperature severely restricts practical applications of Mg. Through interface strains, the crystal structure of Mg can be transformed and stabilized from a simple hexagonal (hexagonal close packed hcp) to body center cubic (bcc) crystal structure at ambient pressures. Here, we demonstrate that when introduced into a nanocomposite bcc Mg is far more ductile, 50% stronger, and retains its strength after extended exposure to 200°C, which is 0.5 times its homologous temperature. These findings reveal an alternative solution to obtaining lightweight metals critically needed for future energy efficiency and fuel savings.
Authors:
 [1] ; ORCiD logo [2] ; ORCiD logo [2] ;  [1] ;  [3] ; ORCiD logo [4] ;  [5]
  1. Univ. of Nevada, Reno, NV (United States). Dept. of Chemical and Materials Engineering
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Chinese Academy of Sciences (CAS), Shenyang (China). Shenyang National Lab. for Materials Science
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United State
  5. Univ. of California, Santa Barbara, CA (United States). Mechanical Engineering Dept., Materials Dept.
Publication Date:
Report Number(s):
LA-UR-17-27197
Journal ID: 2045-2322 (Electronic)
Grant/Contract Number:
AC52-06NA25396; NA0001974; AC02-06CH11357; 1541918
Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 7; Journal Issue: 1
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Office of Science (SC); National Science Foundation (NSF); USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Material Science
OSTI Identifier:
1392815

Pathak, Siddhartha, Velisavljevic, Nenad, Baldwin, Jon Kevin Scott, Jain, Manish, Zheng, Shijian, Mara, Nathan Allan, and Beyerlein, Irene. Strong, Ductile, and Thermally Stable bcc-Mg Nanolaminates. United States: N. p., Web. doi:10.1038/s41598-017-08302-5.
Pathak, Siddhartha, Velisavljevic, Nenad, Baldwin, Jon Kevin Scott, Jain, Manish, Zheng, Shijian, Mara, Nathan Allan, & Beyerlein, Irene. Strong, Ductile, and Thermally Stable bcc-Mg Nanolaminates. United States. doi:10.1038/s41598-017-08302-5.
Pathak, Siddhartha, Velisavljevic, Nenad, Baldwin, Jon Kevin Scott, Jain, Manish, Zheng, Shijian, Mara, Nathan Allan, and Beyerlein, Irene. 2017. "Strong, Ductile, and Thermally Stable bcc-Mg Nanolaminates". United States. doi:10.1038/s41598-017-08302-5. https://www.osti.gov/servlets/purl/1392815.
@article{osti_1392815,
title = {Strong, Ductile, and Thermally Stable bcc-Mg Nanolaminates},
author = {Pathak, Siddhartha and Velisavljevic, Nenad and Baldwin, Jon Kevin Scott and Jain, Manish and Zheng, Shijian and Mara, Nathan Allan and Beyerlein, Irene},
abstractNote = {Magnesium has attracted attention worldwide because it is the lightest structural metal. However, a high strength-to-weight ratio remains its only attribute, since an intrinsic lack of strength, ductility and low melting temperature severely restricts practical applications of Mg. Through interface strains, the crystal structure of Mg can be transformed and stabilized from a simple hexagonal (hexagonal close packed hcp) to body center cubic (bcc) crystal structure at ambient pressures. Here, we demonstrate that when introduced into a nanocomposite bcc Mg is far more ductile, 50% stronger, and retains its strength after extended exposure to 200°C, which is 0.5 times its homologous temperature. These findings reveal an alternative solution to obtaining lightweight metals critically needed for future energy efficiency and fuel savings.},
doi = {10.1038/s41598-017-08302-5},
journal = {Scientific Reports},
number = 1,
volume = 7,
place = {United States},
year = {2017},
month = {8}
}