Published June 2008 | Version v1
Journal article Metadata-only

Hall-Petch relationship in a nanotwinned nickel alloy

Creators

  • 1. Department of Chemical, Materials and Biomolecular Engineering, University of Connecticut, Storrs, CT 06269 (United States)
  • 2. Departamento de Ingenieria Mecanica, Energetica y de los Materiales Universidad de Extremadura, 06071 Badajoz (Spain)
  • 3. Intel Corporation, Chandler, AZ 85226 (United States)

Description

The Hall-Petch relationship in a nanotwinned alloy with absence of dislocation pile-ups is investigated for the first time. It is shown that, when the twin spacing is large (d > 150 nm), the hardness exhibits a d-1/2 dependence. However, when the twin spacing is small (d < 100 nm), a d-1 dependence results. These phenomena are interpreted based on dislocation-mediated mechanisms corroborated by the analysis of electron microscopy and X-ray diffractometry

Availability note (English)

Available from http://dx.doi.org/10.1016/j.scriptamat.2008.01.025

Additional details

Identifiers

DOI
10.1016/j.scriptamat.2008.01.025;
PII
S1359-6462(08)00066-3;

Publishing Information

Journal Title
Scripta Materialia
Journal Volume
58
Journal Issue
11
Journal Page Range
p. 951-954
ISSN
1359-6462
CODEN
SCMAF7

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
40027573
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CRYSTALS; DISLOCATIONS; ELECTRON MICROSCOPY; HARDNESS; MICROSTRUCTURE; NANOSTRUCTURES; NICKEL ALLOYS; PLASTICITY; TWINNING; X-RAY DIFFRACTION
Descriptors DEC
ALLOYS; COHERENT SCATTERING; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; DIFFRACTION; LINE DEFECTS; MECHANICAL PROPERTIES; MICROSCOPY; SCATTERING; TRANSITION ELEMENT ALLOYS

Optional Information

Copyright
Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.