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Title: Phase transformation dependence on initial plastic deformation mode in Si via nanoindentation

Abstract

Silicon in its diamond-cubic phase is known to phase transform to a technologically interesting mixture of the body-centred cubic and rhombohedral phases under nanoindentation pressure. In this study, we demonstrate that during plastic deformation the sample can traverse two distinct pathways, one that initially nucleates a phase transformation while the other initially nucleates crystalline defects. These two pathways remain distinct even after sufficient pressure is applied such that both deformation mechanisms are present within the sample. Here, it is further shown that the indents that initially nucleate a phase transformation generate larger, more uniform volumes of the phase transformed material than indents that initially nucleate crystalline defects.

Authors:
ORCiD logo [1];  [2];  [1];  [1]
  1. The Australian National Univ., Canberra (Australia)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1334484
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Experimental Mechanics
Additional Journal Information:
Journal Name: Experimental Mechanics; Journal ID: ISSN 0014-4851
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; nanoindentation; silicon; phase transformation; bc8; r8

Citation Formats

Wong, Sherman, Haberl, Bianca, Williams, James S., and Bradby, Jodie E. Phase transformation dependence on initial plastic deformation mode in Si via nanoindentation. United States: N. p., 2016. Web. doi:10.1007/s11340-016-0213-7.
Wong, Sherman, Haberl, Bianca, Williams, James S., & Bradby, Jodie E. Phase transformation dependence on initial plastic deformation mode in Si via nanoindentation. United States. https://doi.org/10.1007/s11340-016-0213-7
Wong, Sherman, Haberl, Bianca, Williams, James S., and Bradby, Jodie E. Fri . "Phase transformation dependence on initial plastic deformation mode in Si via nanoindentation". United States. https://doi.org/10.1007/s11340-016-0213-7. https://www.osti.gov/servlets/purl/1334484.
@article{osti_1334484,
title = {Phase transformation dependence on initial plastic deformation mode in Si via nanoindentation},
author = {Wong, Sherman and Haberl, Bianca and Williams, James S. and Bradby, Jodie E.},
abstractNote = {Silicon in its diamond-cubic phase is known to phase transform to a technologically interesting mixture of the body-centred cubic and rhombohedral phases under nanoindentation pressure. In this study, we demonstrate that during plastic deformation the sample can traverse two distinct pathways, one that initially nucleates a phase transformation while the other initially nucleates crystalline defects. These two pathways remain distinct even after sufficient pressure is applied such that both deformation mechanisms are present within the sample. Here, it is further shown that the indents that initially nucleate a phase transformation generate larger, more uniform volumes of the phase transformed material than indents that initially nucleate crystalline defects.},
doi = {10.1007/s11340-016-0213-7},
journal = {Experimental Mechanics},
number = ,
volume = ,
place = {United States},
year = {Fri Sep 30 00:00:00 EDT 2016},
month = {Fri Sep 30 00:00:00 EDT 2016}
}

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