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A SANS and APT study of precipitate evolution and strengthening in a maraging steel

T.H. Simm, L. Sun, D.R. Galvin, E.P. Gilbert, D. Alba Venero, Y. Li, T.L. Martin, P.A.J. Bagot, M.P. Moody, P. Hill, H.K.D.H. Bhadeshia, S. Birosca, M.J. Rawson, K.M. Perkins, Karen Perkins Orcid Logo, Soran Birosca Orcid Logo, Thomas Simm Orcid Logo

Materials Science and Engineering: A, Volume: 702, Pages: 414 - 424

Swansea University Authors: Karen Perkins Orcid Logo, Soran Birosca Orcid Logo, Thomas Simm Orcid Logo

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DOI (Published version): 10.1016/j.msea.2017.07.013

Abstract

In this work a combination of the characterisation techniques small angle neutron scattering (SANS) and atom probe tomography (APT) are used to study the precipitation in a maraging steel. Three similar maraging steel alloys were aged at different temperatures and ageing times, and then characterise...

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Published in: Materials Science and Engineering: A
ISSN: 0921-5093
Published: 2017
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URI: https://cronfa.swan.ac.uk/Record/cronfa34618
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Three similar maraging steel alloys were aged at different temperatures and ageing times, and then characterised using SANS, APT and microhardness. The alloys consist of two types of precipitates, namely Laves phase and &#x3B2;-NiAl, the precipitates have different composition and hence precipitate ageing, which makes it complicated to model. The SANS experimental set-up was relatively simple and allowed the precipitate size and fraction of a large number of samples to be measured in a single experiment. The APT results were used for constraining the SANS modelling, particularly the composition, shape and distribution of phases. The characterisation led to the following description of precipitation: NiAl phase reaches coarsening at early stages of ageing and shifts its strength mechanisms from shearing to Orowan looping, which cause the characteristic peak strength; the Laves phase is in growth throughout and its strength contribution increases with ageing time. These observations were shown to be consistent with precipitate evolution and strengthening models, and the work of others. Although, there are some issues with the combination of SANS and APT approach, which are discussed, the methodology provides a valuable tool to understand complex precipitation behaviours.</abstract><type>Journal Article</type><journal>Materials Science and Engineering: A</journal><volume>702</volume><paginationStart>414</paginationStart><paginationEnd>424</paginationEnd><publisher/><issnPrint>0921-5093</issnPrint><keywords>small angle neutron scattering (SANS); atom probe tomography (APT); Steel; Precipitation strengthening; NiAl; Laves phase</keywords><publishedDay>15</publishedDay><publishedMonth>8</publishedMonth><publishedYear>2017</publishedYear><publishedDate>2017-08-15</publishedDate><doi>10.1016/j.msea.2017.07.013</doi><url/><notes/><college>COLLEGE NANME</college><department>Engineering</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>EEN</DepartmentCode><institution>Swansea University</institution><apcterm/><lastEdited>2017-09-11T12:39:13.4719104</lastEdited><Created>2017-07-12T16:09:56.9760480</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Engineering and Applied Sciences - Uncategorised</level></path><authors><author><firstname>T.H.</firstname><surname>Simm</surname><order>1</order></author><author><firstname>L.</firstname><surname>Sun</surname><order>2</order></author><author><firstname>D.R.</firstname><surname>Galvin</surname><order>3</order></author><author><firstname>E.P.</firstname><surname>Gilbert</surname><order>4</order></author><author><firstname>D.</firstname><surname>Alba Venero</surname><order>5</order></author><author><firstname>Y.</firstname><surname>Li</surname><order>6</order></author><author><firstname>T.L.</firstname><surname>Martin</surname><order>7</order></author><author><firstname>P.A.J.</firstname><surname>Bagot</surname><order>8</order></author><author><firstname>M.P.</firstname><surname>Moody</surname><order>9</order></author><author><firstname>P.</firstname><surname>Hill</surname><order>10</order></author><author><firstname>H.K.D.H.</firstname><surname>Bhadeshia</surname><order>11</order></author><author><firstname>S.</firstname><surname>Birosca</surname><order>12</order></author><author><firstname>M.J.</firstname><surname>Rawson</surname><order>13</order></author><author><firstname>K.M.</firstname><surname>Perkins</surname><order>14</order></author><author><firstname>Karen</firstname><surname>Perkins</surname><orcid>0000-0001-5826-9705</orcid><order>15</order></author><author><firstname>Soran</firstname><surname>Birosca</surname><orcid>0000-0002-8380-771X</orcid><order>16</order></author><author><firstname>Thomas</firstname><surname>Simm</surname><orcid>0000-0001-6305-9809</orcid><order>17</order></author></authors><documents><document><filename>0034618-28072017133722.pdf</filename><originalFilename>simm2017(3)v2.pdf</originalFilename><uploaded>2017-07-28T13:37:22.8530000</uploaded><type>Output</type><contentLength>1562058</contentLength><contentType>application/pdf</contentType><version>Version of Record</version><cronfaStatus>true</cronfaStatus><embargoDate>2017-07-28T00:00:00.0000000</embargoDate><copyrightCorrect>true</copyrightCorrect><language>eng</language></document></documents><OutputDurs/></rfc1807>
spelling 2017-09-11T12:39:13.4719104 v2 34618 2017-07-12 A SANS and APT study of precipitate evolution and strengthening in a maraging steel f866eaa2d8f163d2b4e99259966427c8 0000-0001-5826-9705 Karen Perkins Karen Perkins true false 3445603fcc2ff9d27b476a73b223a507 0000-0002-8380-771X Soran Birosca Soran Birosca true false 10fa7732a6aee5613ff1364dc8460972 0000-0001-6305-9809 Thomas Simm Thomas Simm true false 2017-07-12 EEN In this work a combination of the characterisation techniques small angle neutron scattering (SANS) and atom probe tomography (APT) are used to study the precipitation in a maraging steel. Three similar maraging steel alloys were aged at different temperatures and ageing times, and then characterised using SANS, APT and microhardness. The alloys consist of two types of precipitates, namely Laves phase and β-NiAl, the precipitates have different composition and hence precipitate ageing, which makes it complicated to model. The SANS experimental set-up was relatively simple and allowed the precipitate size and fraction of a large number of samples to be measured in a single experiment. The APT results were used for constraining the SANS modelling, particularly the composition, shape and distribution of phases. The characterisation led to the following description of precipitation: NiAl phase reaches coarsening at early stages of ageing and shifts its strength mechanisms from shearing to Orowan looping, which cause the characteristic peak strength; the Laves phase is in growth throughout and its strength contribution increases with ageing time. These observations were shown to be consistent with precipitate evolution and strengthening models, and the work of others. Although, there are some issues with the combination of SANS and APT approach, which are discussed, the methodology provides a valuable tool to understand complex precipitation behaviours. Journal Article Materials Science and Engineering: A 702 414 424 0921-5093 small angle neutron scattering (SANS); atom probe tomography (APT); Steel; Precipitation strengthening; NiAl; Laves phase 15 8 2017 2017-08-15 10.1016/j.msea.2017.07.013 COLLEGE NANME Engineering COLLEGE CODE EEN Swansea University 2017-09-11T12:39:13.4719104 2017-07-12T16:09:56.9760480 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised T.H. Simm 1 L. Sun 2 D.R. Galvin 3 E.P. Gilbert 4 D. Alba Venero 5 Y. Li 6 T.L. Martin 7 P.A.J. Bagot 8 M.P. Moody 9 P. Hill 10 H.K.D.H. Bhadeshia 11 S. Birosca 12 M.J. Rawson 13 K.M. Perkins 14 Karen Perkins 0000-0001-5826-9705 15 Soran Birosca 0000-0002-8380-771X 16 Thomas Simm 0000-0001-6305-9809 17 0034618-28072017133722.pdf simm2017(3)v2.pdf 2017-07-28T13:37:22.8530000 Output 1562058 application/pdf Version of Record true 2017-07-28T00:00:00.0000000 true eng
title A SANS and APT study of precipitate evolution and strengthening in a maraging steel
spellingShingle A SANS and APT study of precipitate evolution and strengthening in a maraging steel
Karen Perkins
Soran Birosca
Thomas Simm
title_short A SANS and APT study of precipitate evolution and strengthening in a maraging steel
title_full A SANS and APT study of precipitate evolution and strengthening in a maraging steel
title_fullStr A SANS and APT study of precipitate evolution and strengthening in a maraging steel
title_full_unstemmed A SANS and APT study of precipitate evolution and strengthening in a maraging steel
title_sort A SANS and APT study of precipitate evolution and strengthening in a maraging steel
author_id_str_mv f866eaa2d8f163d2b4e99259966427c8
3445603fcc2ff9d27b476a73b223a507
10fa7732a6aee5613ff1364dc8460972
author_id_fullname_str_mv f866eaa2d8f163d2b4e99259966427c8_***_Karen Perkins
3445603fcc2ff9d27b476a73b223a507_***_Soran Birosca
10fa7732a6aee5613ff1364dc8460972_***_Thomas Simm
author Karen Perkins
Soran Birosca
Thomas Simm
author2 T.H. Simm
L. Sun
D.R. Galvin
E.P. Gilbert
D. Alba Venero
Y. Li
T.L. Martin
P.A.J. Bagot
M.P. Moody
P. Hill
H.K.D.H. Bhadeshia
S. Birosca
M.J. Rawson
K.M. Perkins
Karen Perkins
Soran Birosca
Thomas Simm
format Journal article
container_title Materials Science and Engineering: A
container_volume 702
container_start_page 414
publishDate 2017
institution Swansea University
issn 0921-5093
doi_str_mv 10.1016/j.msea.2017.07.013
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
document_store_str 1
active_str 0
description In this work a combination of the characterisation techniques small angle neutron scattering (SANS) and atom probe tomography (APT) are used to study the precipitation in a maraging steel. Three similar maraging steel alloys were aged at different temperatures and ageing times, and then characterised using SANS, APT and microhardness. The alloys consist of two types of precipitates, namely Laves phase and β-NiAl, the precipitates have different composition and hence precipitate ageing, which makes it complicated to model. The SANS experimental set-up was relatively simple and allowed the precipitate size and fraction of a large number of samples to be measured in a single experiment. The APT results were used for constraining the SANS modelling, particularly the composition, shape and distribution of phases. The characterisation led to the following description of precipitation: NiAl phase reaches coarsening at early stages of ageing and shifts its strength mechanisms from shearing to Orowan looping, which cause the characteristic peak strength; the Laves phase is in growth throughout and its strength contribution increases with ageing time. These observations were shown to be consistent with precipitate evolution and strengthening models, and the work of others. Although, there are some issues with the combination of SANS and APT approach, which are discussed, the methodology provides a valuable tool to understand complex precipitation behaviours.
published_date 2017-08-15T03:42:57Z
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score 11.035874

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