期刊
SCIENTIFIC REPORTS
卷 7, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41598-017-08302-5
关键词
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资金
- National Science Foundation (NSF) - Civil, Mechanical and Manufacturing Innovation (CMMI) Early Concept Grants for Exploratory Research (EAGER) [1541918]
- National Science Foundation Designing Materials to Revolutionize and Engineer our Future (NSF-DMREF) program
- University of Nevada, Reno NAASIC (Nevada Advanced Autonomous Systems Innovation Center) Seed Funding for Interdisciplinary Research
- University of Nevada, Reno Research Enhancement Grants (REG)
- DOE-NNSA [DE-NA0001974]
- NSF
- DOE Office of Science [DE-AC02-06CH11357]
- National Nuclear Security Administration of the U.S. Department of Energy [DE-AC52-06NA25396]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1541918] Funding Source: National Science Foundation
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. We demonstrate that when introduced into a nanocomposite bcc Mg is far more ductile, 50% stronger, and retains its strength after extended exposure to 200C, 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.
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