Thermal stability of nanocomposite metals: In situ observation of anomalous residual stress relaxation during annealing under synchrotron radiation

被引：29

作者：

Dubois, J. B. ^{[1
,2
]}

Thilly, L. ^{[1
]}

Renault, P. O. ^{[1
]}

Lecouturier, F. ^{[2
]}

Di Michiel, M. ^{[3
]}

机构：

[1] Univ Poitiers, Inst Pprime, CNRS, ENSMA,SP2MI, F-86962 Futuroscope, France

[2] Univ Toulouse, CNRS, Lab Natl Champs Magnet Intenses, F-31400 Toulouse, France

[3] European Synchrotron Radiat Facil, F-38043 Grenoble, France

来源：

ACTA MATERIALIA | 2010年 / 58卷 / 19期

关键词：

Nanostructures; In situ annealing; Residual stresses; X-ray diffraction; Synchrotron; NEUTRON-DIFFRACTION; THIN-FILMS; BCC WIRES; DEFORMATION; EXPANSION; ALLOYS; ELONGATION; EVOLUTION; STRAIN; MATRIX;

D O I：

10.1016/j.actamat.2010.08.013

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The thermal stability of nanocomposite metals (a nanostructured copper matrix embedding niobium nanotubes) is investigated via time-resolved in situ annealing under synchrotron high-energy X-rays. The diffraction peak profile analysis demonstrates that internal-stress relaxation begins in the Nb nanotubes at a temperature far below the bulk recrystallization temperature and follows size-specific regimes originating from a proximity effect with the nanostructured Cu matrix: the increased Cu-Nb interface surface disrupts internal-stress relaxation processes, confirming the larger thermal resistance of nanostructured materials. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：6504 / 6512

页数：9

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