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Title: Indentation recovery in GdPO 4 and observation of deformation twinning

Abstract

A series of nanoindentation tests on both single and polycrystalline specimens of a monazite rare-earth orthophosphate, GdPO 4, revealed frequent observation of anomalous unloading behavior with a large degree of recovery, where previously this behavior had only been observed in xenotime-structure rare-earth orthophosphates. An indentation site in the polycrystalline sample was examined using TEM to identify the deformation mechanism responsible for recovery. Finally, the presence of a twin along the (100) orientation, along with a series of stacking faults contained within the deformation site, provide evidence that the mechanism of recovery in GdPO 4 is the collapse of deformation twins during unloading.

Authors:
 [1]; ORCiD logo [1]; ORCiD logo [2];  [1]; ORCiD logo [1]
  1. Colorado School of Mines, Golden, CO (United States). Dept. of Metallurgical and Materials Engineering
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Colorado School of Mines, Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF)
OSTI Identifier:
1327558
Alternate Identifier(s):
OSTI ID: 1327665; OSTI ID: 1420518
Grant/Contract Number:  
AC05-00OR22725; DMR-1352499
Resource Type:
Published Article
Journal Name:
AIP Advances
Additional Journal Information:
Journal Volume: 6; Journal Issue: 9; Journal ID: ISSN 2158-3226
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; polycrystals; hardness; nanotechnology; phase transitions; single crystals

Citation Formats

Wilkinson, Taylor M., Musselman, Matthew A., Boatner, Lynn A., Diercks, David R., and Packard, Corinne E. Indentation recovery in GdPO4 and observation of deformation twinning. United States: N. p., 2016. Web. doi:10.1063/1.4964356.
Wilkinson, Taylor M., Musselman, Matthew A., Boatner, Lynn A., Diercks, David R., & Packard, Corinne E. Indentation recovery in GdPO4 and observation of deformation twinning. United States. doi:10.1063/1.4964356.
Wilkinson, Taylor M., Musselman, Matthew A., Boatner, Lynn A., Diercks, David R., and Packard, Corinne E. Fri . "Indentation recovery in GdPO4 and observation of deformation twinning". United States. doi:10.1063/1.4964356.
@article{osti_1327558,
title = {Indentation recovery in GdPO4 and observation of deformation twinning},
author = {Wilkinson, Taylor M. and Musselman, Matthew A. and Boatner, Lynn A. and Diercks, David R. and Packard, Corinne E.},
abstractNote = {A series of nanoindentation tests on both single and polycrystalline specimens of a monazite rare-earth orthophosphate, GdPO4, revealed frequent observation of anomalous unloading behavior with a large degree of recovery, where previously this behavior had only been observed in xenotime-structure rare-earth orthophosphates. An indentation site in the polycrystalline sample was examined using TEM to identify the deformation mechanism responsible for recovery. Finally, the presence of a twin along the (100) orientation, along with a series of stacking faults contained within the deformation site, provide evidence that the mechanism of recovery in GdPO4 is the collapse of deformation twins during unloading.},
doi = {10.1063/1.4964356},
journal = {AIP Advances},
number = 9,
volume = 6,
place = {United States},
year = {2016},
month = {9}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1063/1.4964356

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Cited by: 1 work
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