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Alloying effect on solidification behaviour and grain refinement in Ti45Al2Nb2Ta0.8B and Ti45Al2Nb2Hf0.8B / Jing Li, Spencer Jeffs, Mark Whittaker, Nigel Martin

Intermetallics, Volume: 127, Start page: 106984

Swansea University Authors: Jing Li, Spencer Jeffs, Mark Whittaker

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Abstract

The solidification process of Ti45Al2Nb2Ta0.8B (B4522Ta) and Ti45Al2Nb2Hf0.8B (B4522Hf) Bridgman samples were studied through directional solidification. Boron addition at 0.8 at. % was found to have changed the orientation relationship of peritectic α with β dendrites. The peritectic alpha is rando...

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Published in: Intermetallics
ISSN: 0966-9795
Published: Elsevier BV 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa55375
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spelling 2021-12-01T13:57:24.0930951 v2 55375 2020-10-08 Alloying effect on solidification behaviour and grain refinement in Ti45Al2Nb2Ta0.8B and Ti45Al2Nb2Hf0.8B 63decc944dd44c096082eea7cd16d3f3 Jing Li Jing Li true false 6ff76d567df079d8bf299990849c3d8f 0000-0002-2819-9651 Spencer Jeffs Spencer Jeffs true false a146c6d442cb2c466d096179f9ac97ca 0000-0002-5854-0726 Mark Whittaker Mark Whittaker true false 2020-10-08 MTLS The solidification process of Ti45Al2Nb2Ta0.8B (B4522Ta) and Ti45Al2Nb2Hf0.8B (B4522Hf) Bridgman samples were studied through directional solidification. Boron addition at 0.8 at. % was found to have changed the orientation relationship of peritectic α with β dendrites. The peritectic alpha is randomly oriented in both B4522Ta and B4522Hf, it was likely to be inoculated by boride precipitates at the β/liquid interfaces during peritectic transformation. The alloying effect of Ta and Hf on the peritectic reaction was similar. Borides precipitated earlier in Ta-containing alloy than that in Hf-containing alloy during solidification. Journal Article Intermetallics 127 106984 Elsevier BV 0966-9795 Titanium aluminide, TiAl, Solidification, Microstructure, Grain refinement, Boron 1 12 2020 2020-12-01 10.1016/j.intermet.2020.106984 COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University UKRI, EP/H022309/1, EP/H500383/1 2021-12-01T13:57:24.0930951 2020-10-08T09:01:04.0801923 College of Engineering Engineering Jing Li 1 Spencer Jeffs 0000-0002-2819-9651 2 Mark Whittaker 0000-0002-5854-0726 3 Nigel Martin 4 55375__18368__56702ec1b105452aa85666e149ecefd6.pdf 55375.pdf 2020-10-08T09:02:57.2216677 Output 13205591 application/pdf Version of Record true © 2020 The Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 4.0 (CC BY) License true eng http://creativecommons.org/licenses/by/4.0/
title Alloying effect on solidification behaviour and grain refinement in Ti45Al2Nb2Ta0.8B and Ti45Al2Nb2Hf0.8B
spellingShingle Alloying effect on solidification behaviour and grain refinement in Ti45Al2Nb2Ta0.8B and Ti45Al2Nb2Hf0.8B
Jing, Li
Spencer, Jeffs
Mark, Whittaker
title_short Alloying effect on solidification behaviour and grain refinement in Ti45Al2Nb2Ta0.8B and Ti45Al2Nb2Hf0.8B
title_full Alloying effect on solidification behaviour and grain refinement in Ti45Al2Nb2Ta0.8B and Ti45Al2Nb2Hf0.8B
title_fullStr Alloying effect on solidification behaviour and grain refinement in Ti45Al2Nb2Ta0.8B and Ti45Al2Nb2Hf0.8B
title_full_unstemmed Alloying effect on solidification behaviour and grain refinement in Ti45Al2Nb2Ta0.8B and Ti45Al2Nb2Hf0.8B
title_sort Alloying effect on solidification behaviour and grain refinement in Ti45Al2Nb2Ta0.8B and Ti45Al2Nb2Hf0.8B
author_id_str_mv 63decc944dd44c096082eea7cd16d3f3
6ff76d567df079d8bf299990849c3d8f
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author_id_fullname_str_mv 63decc944dd44c096082eea7cd16d3f3_***_Jing, Li
6ff76d567df079d8bf299990849c3d8f_***_Spencer, Jeffs
a146c6d442cb2c466d096179f9ac97ca_***_Mark, Whittaker
author Jing, Li
Spencer, Jeffs
Mark, Whittaker
author2 Jing Li
Spencer Jeffs
Mark Whittaker
Nigel Martin
format Journal article
container_title Intermetallics
container_volume 127
container_start_page 106984
publishDate 2020
institution Swansea University
issn 0966-9795
doi_str_mv 10.1016/j.intermet.2020.106984
publisher Elsevier BV
college_str College of Engineering
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hierarchy_top_id collegeofengineering
hierarchy_top_title College of Engineering
hierarchy_parent_id collegeofengineering
hierarchy_parent_title College of Engineering
department_str Engineering{{{_:::_}}}College of Engineering{{{_:::_}}}Engineering
document_store_str 1
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description The solidification process of Ti45Al2Nb2Ta0.8B (B4522Ta) and Ti45Al2Nb2Hf0.8B (B4522Hf) Bridgman samples were studied through directional solidification. Boron addition at 0.8 at. % was found to have changed the orientation relationship of peritectic α with β dendrites. The peritectic alpha is randomly oriented in both B4522Ta and B4522Hf, it was likely to be inoculated by boride precipitates at the β/liquid interfaces during peritectic transformation. The alloying effect of Ta and Hf on the peritectic reaction was similar. Borides precipitated earlier in Ta-containing alloy than that in Hf-containing alloy during solidification.
published_date 2020-12-01T04:20:15Z
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score 10.851168