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Title: A method for the monitoring of metal recrystallization based on the in-situ measurement of the elastic energy release using neutron diffraction

Abstract

A method is proposed for the monitoring of metal recrystallization using neutron diffraction that is based on the measurement of stored energy. Experiments were performed using deformed metal specimens heated in-situ while mounted at the sample position of the High Resolution Powder Diffractometer, HRPD (ISIS Facility), UK. Monitoring the breadth of the resulting Bragg lines during heating not only allows the time-dependence (or temperature-dependence) of the stored energy to be determined but also the recrystallized fraction. The analysis method presented here was developed using pure nickel (Ni270) specimens with different deformation levels from 0.29 to 0.94. In situ temperature ramping as well as isothermal annealing was undertaken. The method developed in this work allows accurate and quantitative monitoring of the recrystallization process. The results from neutron diffraction are satisfactorily compared to data obtained from calorimetry and hardness measurements.

Authors:
;  [1];  [2];  [3];  [2];  [3]
  1. Institut des Matériaux Jean Rouxel (IMN), Université de Nantes, CNRS, Rue Christian Pauc, BP 50609, 44306 Nantes Cedex 3 (France)
  2. ISIS Facility, Rutherford Appleton Laboratory, Chilton OX11 0QX (United Kingdom)
  3. (United Kingdom)
Publication Date:
OSTI Identifier:
22392501
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 86; Journal Issue: 5; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ANNEALING; CALORIMETRY; DEFORMATION; HARDNESS; HEATING; MONITORING; NEUTRON DIFFRACTION; NICKEL; RECRYSTALLIZATION; RESOLUTION; STORED ENERGY; TEMPERATURE DEPENDENCE; TIME DEPENDENCE

Citation Formats

Christien, F., E-mail: frederic.christien@univ-nantes.fr, Le Gall, R., Telling, M. T. F., Department of Materials, University of Oxford, Parks Road, Oxford, Knight, K. S., and Department of Earth Sciences, The Natural History Museum, Cromwell Road, London. A method for the monitoring of metal recrystallization based on the in-situ measurement of the elastic energy release using neutron diffraction. United States: N. p., 2015. Web. doi:10.1063/1.4919414.
Christien, F., E-mail: frederic.christien@univ-nantes.fr, Le Gall, R., Telling, M. T. F., Department of Materials, University of Oxford, Parks Road, Oxford, Knight, K. S., & Department of Earth Sciences, The Natural History Museum, Cromwell Road, London. A method for the monitoring of metal recrystallization based on the in-situ measurement of the elastic energy release using neutron diffraction. United States. doi:10.1063/1.4919414.
Christien, F., E-mail: frederic.christien@univ-nantes.fr, Le Gall, R., Telling, M. T. F., Department of Materials, University of Oxford, Parks Road, Oxford, Knight, K. S., and Department of Earth Sciences, The Natural History Museum, Cromwell Road, London. Fri . "A method for the monitoring of metal recrystallization based on the in-situ measurement of the elastic energy release using neutron diffraction". United States. doi:10.1063/1.4919414.
@article{osti_22392501,
title = {A method for the monitoring of metal recrystallization based on the in-situ measurement of the elastic energy release using neutron diffraction},
author = {Christien, F., E-mail: frederic.christien@univ-nantes.fr and Le Gall, R. and Telling, M. T. F. and Department of Materials, University of Oxford, Parks Road, Oxford and Knight, K. S. and Department of Earth Sciences, The Natural History Museum, Cromwell Road, London},
abstractNote = {A method is proposed for the monitoring of metal recrystallization using neutron diffraction that is based on the measurement of stored energy. Experiments were performed using deformed metal specimens heated in-situ while mounted at the sample position of the High Resolution Powder Diffractometer, HRPD (ISIS Facility), UK. Monitoring the breadth of the resulting Bragg lines during heating not only allows the time-dependence (or temperature-dependence) of the stored energy to be determined but also the recrystallized fraction. The analysis method presented here was developed using pure nickel (Ni270) specimens with different deformation levels from 0.29 to 0.94. In situ temperature ramping as well as isothermal annealing was undertaken. The method developed in this work allows accurate and quantitative monitoring of the recrystallization process. The results from neutron diffraction are satisfactorily compared to data obtained from calorimetry and hardness measurements.},
doi = {10.1063/1.4919414},
journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 5,
volume = 86,
place = {United States},
year = {2015},
month = {5}
}