Engineering Interface Structures and Thermal Stabilities via SPD Processing in Bulk Nanostructured Metals

Nanostructured metals achieve extraordinary strength but suffer from low thermal stability, both a consequence of a high fraction of interfaces. Overcoming this tradeoff relies on making the interfaces themselves thermally stable. Here we show that the atomic structures of bi-metal interfaces in mac...

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Main Authors:	Zheng, Shijian, Carpenter, John S., McCabe, Rodney J., Beyerlein, Irene J., Mara, Nathan A.
Format:	Online
Language:	English
Published:	Nature Publishing Group 2014
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3936211/

id	pubmed-3936211
recordtype	oai_dc
spelling	pubmed-39362112014-03-04 Engineering Interface Structures and Thermal Stabilities via SPD Processing in Bulk Nanostructured Metals Zheng, Shijian Carpenter, John S. McCabe, Rodney J. Beyerlein, Irene J. Mara, Nathan A. Article Nanostructured metals achieve extraordinary strength but suffer from low thermal stability, both a consequence of a high fraction of interfaces. Overcoming this tradeoff relies on making the interfaces themselves thermally stable. Here we show that the atomic structures of bi-metal interfaces in macroscale nanomaterials suitable for engineering structures can be significantly altered via changing the severe plastic deformation (SPD) processing pathway. Two types of interfaces are formed, both exhibiting a regular atomic structure and providing for excellent thermal stability, up to more than half the melting temperature of one of the constituents. Most importantly, the thermal stability of one is found to be significantly better than the other, indicating the exciting potential to control and optimize macroscale robustness via atomic-scale bimetal interface tuning. Taken together, these results demonstrate an innovative way to engineer pristine bimetal interfaces for a new class of simultaneously strong and thermally stable materials. Nature Publishing Group 2014-02-27 /pmc/articles/PMC3936211/ /pubmed/24573355 http://dx.doi.org/10.1038/srep04226 Text en Copyright © 2014, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Zheng, Shijian Carpenter, John S. McCabe, Rodney J. Beyerlein, Irene J. Mara, Nathan A.
spellingShingle	Zheng, Shijian Carpenter, John S. McCabe, Rodney J. Beyerlein, Irene J. Mara, Nathan A. Engineering Interface Structures and Thermal Stabilities via SPD Processing in Bulk Nanostructured Metals
author_facet	Zheng, Shijian Carpenter, John S. McCabe, Rodney J. Beyerlein, Irene J. Mara, Nathan A.
author_sort	Zheng, Shijian
title	Engineering Interface Structures and Thermal Stabilities via SPD Processing in Bulk Nanostructured Metals
title_short	Engineering Interface Structures and Thermal Stabilities via SPD Processing in Bulk Nanostructured Metals
title_full	Engineering Interface Structures and Thermal Stabilities via SPD Processing in Bulk Nanostructured Metals
title_fullStr	Engineering Interface Structures and Thermal Stabilities via SPD Processing in Bulk Nanostructured Metals
title_full_unstemmed	Engineering Interface Structures and Thermal Stabilities via SPD Processing in Bulk Nanostructured Metals
title_sort	engineering interface structures and thermal stabilities via spd processing in bulk nanostructured metals
description	Nanostructured metals achieve extraordinary strength but suffer from low thermal stability, both a consequence of a high fraction of interfaces. Overcoming this tradeoff relies on making the interfaces themselves thermally stable. Here we show that the atomic structures of bi-metal interfaces in macroscale nanomaterials suitable for engineering structures can be significantly altered via changing the severe plastic deformation (SPD) processing pathway. Two types of interfaces are formed, both exhibiting a regular atomic structure and providing for excellent thermal stability, up to more than half the melting temperature of one of the constituents. Most importantly, the thermal stability of one is found to be significantly better than the other, indicating the exciting potential to control and optimize macroscale robustness via atomic-scale bimetal interface tuning. Taken together, these results demonstrate an innovative way to engineer pristine bimetal interfaces for a new class of simultaneously strong and thermally stable materials.
publisher	Nature Publishing Group
publishDate	2014
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3936211/
_version_	1612062327628103680

Engineering Interface Structures and Thermal Stabilities via SPD Processing in Bulk Nanostructured Metals

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