DOI: 10.1126/science.1224737. Design of Stable Nanocrystalline Alloys

10.1126/science.1224737

Crossref journal-article

American Association for the Advancement of Science (AAAS)

Science (221)

Abstract

Metal Manipulation Reducing the grain size below 100 micrometers can vastly improve the properties of a metal. However, these nanocrystalline metals are not thermally stable; at elevated temperatures the grains will grow and merge. Alloying with a second metal to slow grain growth can slow down this process, which has shown some success on a trial-and-error basis. Chookajorn et al. (p. 951 ; see the Perspective by Weertman ) now provide a theoretical framework to create stability maps to identify potential alloys with the greatest thermal stability. For tungsten, counterintuitively, the theory suggests that atoms with the largest size differential or lowest solubility are not the best alloying choice. Indeed, an alloy of tungsten and titanium was processed more easily than pure nanocrystalline tungsten and also showed better stability at high temperatures.

Bibliography

Chookajorn, T., Murdoch, H. A., & Schuh, C. A. (2012). Design of Stable Nanocrystalline Alloys. Science, 337(6097), 951â954.

Authors 3

Tongjai Chookajorn (first)
Heather A. Murdoch (additional)
Christopher A. Schuh (additional)

References 49 Referenced 820

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Dates

Type	When
Created	13 years ago (Aug. 23, 2012, 7:22 p.m.)
Deposited	1 year, 7 months ago (Jan. 10, 2024, 10:07 a.m.)
Indexed	6 hours, 55 minutes ago (Aug. 27, 2025, 12:06 p.m.)
Issued	13 years ago (Aug. 24, 2012)
Published	13 years ago (Aug. 24, 2012)
Published Print	13 years ago (Aug. 24, 2012)

Funders 0

None

BibTeX

@article{Chookajorn_2012, title={Design of Stable Nanocrystalline Alloys}, volume={337}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.1224737}, DOI={10.1126/science.1224737}, number={6097}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Chookajorn, Tongjai and Murdoch, Heather A. and Schuh, Christopher A.}, year={2012}, month=aug, pages={951–954} }

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  "abstract": "<jats:title>Metal Manipulation</jats:title>\n          <jats:p>\n            Reducing the grain size below 100 micrometers can vastly improve the properties of a metal. However, these nanocrystalline metals are not thermally stable; at elevated temperatures the grains will grow and merge. Alloying with a second metal to slow grain growth can slow down this process, which has shown some success on a trial-and-error basis.\n            <jats:bold>\n              Chookajorn\n              <jats:italic>et al.</jats:italic>\n            </jats:bold>\n            (p.\n            <jats:related-article xmlns:xlink=\"http://www.w3.org/1999/xlink\" ext-link-type=\"doi\" page=\"951\" related-article-type=\"in-this-issue\" vol=\"337\" xlink:href=\"10.1126/science.1224737\">951</jats:related-article>\n            ; see the Perspective by\n            <jats:related-article xmlns:xlink=\"http://www.w3.org/1999/xlink\" ext-link-type=\"doi\" issue=\"6097\" page=\"921\" related-article-type=\"in-this-issue\" vol=\"337\" xlink:href=\"10.1126/science.1226724\">\n              <jats:bold>Weertman</jats:bold>\n            </jats:related-article>\n            ) now provide a theoretical framework to create stability maps to identify potential alloys with the greatest thermal stability. For tungsten, counterintuitively, the theory suggests that atoms with the largest size differential or lowest solubility are not the best alloying choice. Indeed, an alloy of tungsten and titanium was processed more easily than pure nanocrystalline tungsten and also showed better stability at high temperatures.\n          </jats:p>",
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