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An evaluation of diffraction peak profile analysis (DPPA) methods to study plastically deformed metals

T.H. Simm, P.J. Withers, J. Quinta da Fonseca, Thomas Simm Orcid Logo

Materials & Design, Volume: 111, Pages: 331 - 343

Swansea University Author: Thomas Simm Orcid Logo

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DOI (Published version): 10.1016/j.matdes.2016.08.091

Abstract

A range of diffraction peak profile analysis (DPPA) techniques were used to determine details of the microstructure of plastically deformed alloys. Four different alloys were deformed by uniaxial tension and compression to a range of strains. The methods we have considered include, the full-width, W...

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Published in: Materials & Design
ISSN: 0264-1275
Published: 2016
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URI: https://cronfa.swan.ac.uk/Record/cronfa34674
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spelling 2018-05-09T13:49:08.3939309 v2 34674 2017-07-17 An evaluation of diffraction peak profile analysis (DPPA) methods to study plastically deformed metals 10fa7732a6aee5613ff1364dc8460972 0000-0001-6305-9809 Thomas Simm Thomas Simm true false 2017-07-17 EEN A range of diffraction peak profile analysis (DPPA) techniques were used to determine details of the microstructure of plastically deformed alloys. Four different alloys were deformed by uniaxial tension and compression to a range of strains. The methods we have considered include, the full-width, Williamson-Hall methods, Warren-Averbach methods, and van Berkum's alternative method. Different metals were chosen to understand the effect of the deformation microstructure and crystal structure, a nickel alloy, two stainless steel alloys and two titanium alloys.The dislocation density values found by Williamson-Hall and Warren-Averbach methods were found to be close to those expected from TEM results of similar metals. When using the Warren-Averbach methods the results suggest that systematic errors in the dislocation density are introduced by three main factors: (1) separation of instrumental broadening, (2) separation of size and strain broadening, and (3) separation of dislocation density and arrangement. Which suggests in many cases the simpler Williamson-Hall method may be preferable.The other main parameters that can be determined by DPPA are the crystal size and the dislocation arrangement. The work suggests that further investigation is needed to understand what use if any these parameters have for quantifying the deformed microstructure of plastically deformed metals. Journal Article Materials & Design 111 331 343 0264-1275 Warren-AverbachDiffraction peak profile analysisX-ray diffractionTitaniumStainless steelWilliamson-Hall 5 12 2016 2016-12-05 10.1016/j.matdes.2016.08.091 http://www.sciencedirect.com/science/article/pii/S0264127516311546 COLLEGE NANME Engineering COLLEGE CODE EEN Swansea University EPSRC 2018-05-09T13:49:08.3939309 2017-07-17T15:58:59.0281584 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised T.H. Simm 1 P.J. Withers 2 J. Quinta da Fonseca 3 Thomas Simm 0000-0001-6305-9809 4
title An evaluation of diffraction peak profile analysis (DPPA) methods to study plastically deformed metals
spellingShingle An evaluation of diffraction peak profile analysis (DPPA) methods to study plastically deformed metals
Thomas Simm
title_short An evaluation of diffraction peak profile analysis (DPPA) methods to study plastically deformed metals
title_full An evaluation of diffraction peak profile analysis (DPPA) methods to study plastically deformed metals
title_fullStr An evaluation of diffraction peak profile analysis (DPPA) methods to study plastically deformed metals
title_full_unstemmed An evaluation of diffraction peak profile analysis (DPPA) methods to study plastically deformed metals
title_sort An evaluation of diffraction peak profile analysis (DPPA) methods to study plastically deformed metals
author_id_str_mv 10fa7732a6aee5613ff1364dc8460972
author_id_fullname_str_mv 10fa7732a6aee5613ff1364dc8460972_***_Thomas Simm
author Thomas Simm
author2 T.H. Simm
P.J. Withers
J. Quinta da Fonseca
Thomas Simm
format Journal article
container_title Materials & Design
container_volume 111
container_start_page 331
publishDate 2016
institution Swansea University
issn 0264-1275
doi_str_mv 10.1016/j.matdes.2016.08.091
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
url http://www.sciencedirect.com/science/article/pii/S0264127516311546
document_store_str 0
active_str 0
description A range of diffraction peak profile analysis (DPPA) techniques were used to determine details of the microstructure of plastically deformed alloys. Four different alloys were deformed by uniaxial tension and compression to a range of strains. The methods we have considered include, the full-width, Williamson-Hall methods, Warren-Averbach methods, and van Berkum's alternative method. Different metals were chosen to understand the effect of the deformation microstructure and crystal structure, a nickel alloy, two stainless steel alloys and two titanium alloys.The dislocation density values found by Williamson-Hall and Warren-Averbach methods were found to be close to those expected from TEM results of similar metals. When using the Warren-Averbach methods the results suggest that systematic errors in the dislocation density are introduced by three main factors: (1) separation of instrumental broadening, (2) separation of size and strain broadening, and (3) separation of dislocation density and arrangement. Which suggests in many cases the simpler Williamson-Hall method may be preferable.The other main parameters that can be determined by DPPA are the crystal size and the dislocation arrangement. The work suggests that further investigation is needed to understand what use if any these parameters have for quantifying the deformed microstructure of plastically deformed metals.
published_date 2016-12-05T03:43:01Z
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score 10.997866

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