Characterisation of nano-scale precipitates in BOR60 irradiated T91 steel using atom probe tomography
•T91 steel was irradiated in BOR60 reactor at five different temperature/dose conditions.•The number density, volume fraction, size and composition of the early stage Mn, Ni, Si -rich clusters have been characterised by atom probe tomography.•After irradiation, Ni, Mn, Si and P segregation to carbid...
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| Veröffentlicht in: | Journal of nuclear materials 2021-01, Vol.543 (C), p.152466, Article 152466 |
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| creator | Yeli, Guma Strutt, Victoria C.I. Auger, M.A. Bagot, Paul A.J. Moody, Michael P. |
| description | •T91 steel was irradiated in BOR60 reactor at five different temperature/dose conditions.•The number density, volume fraction, size and composition of the early stage Mn, Ni, Si -rich clusters have been characterised by atom probe tomography.•After irradiation, Ni, Mn, Si and P segregation to carbide/matrix interface has been observed.•Fe clustering inside a carbide was observed after irradiation at 524 °C:15.4dpa, which has not been reported before.
Atom probe tomography has characterised the microstructural changes in T91 steel after BOR60 reactor irradiation at five temperatures between 376 °C and 524 °C to doses between 14.6 dpa and 35.1 dpa. Irradiation-induced precipitation and segregation to carbide/matrix interface induced by neutron irradiation has been characterised. Atom probe tomography characterisation shows that Mn, Ni, Si -rich (MNS-rich) clusters form in T91 steel irradiated in BOR60 reactor at temperatures between 376 °C and 415 °C, which is not observed at higher temperatures 460 °C and 524 °C. The number density, volume fraction and composition of MNS-rich clusters have been characterised. Ni, Mn, Si and P is found to segregate at carbide matrix interface after irradiation at lower temperature and only P segregation is observed at 524 °C.
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| doi_str_mv | 10.1016/j.jnucmat.2020.152466 |
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Atom probe tomography has characterised the microstructural changes in T91 steel after BOR60 reactor irradiation at five temperatures between 376 °C and 524 °C to doses between 14.6 dpa and 35.1 dpa. Irradiation-induced precipitation and segregation to carbide/matrix interface induced by neutron irradiation has been characterised. Atom probe tomography characterisation shows that Mn, Ni, Si -rich (MNS-rich) clusters form in T91 steel irradiated in BOR60 reactor at temperatures between 376 °C and 415 °C, which is not observed at higher temperatures 460 °C and 524 °C. The number density, volume fraction and composition of MNS-rich clusters have been characterised. Ni, Mn, Si and P is found to segregate at carbide matrix interface after irradiation at lower temperature and only P segregation is observed at 524 °C.
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Atom probe tomography has characterised the microstructural changes in T91 steel after BOR60 reactor irradiation at five temperatures between 376 °C and 524 °C to doses between 14.6 dpa and 35.1 dpa. Irradiation-induced precipitation and segregation to carbide/matrix interface induced by neutron irradiation has been characterised. Atom probe tomography characterisation shows that Mn, Ni, Si -rich (MNS-rich) clusters form in T91 steel irradiated in BOR60 reactor at temperatures between 376 °C and 415 °C, which is not observed at higher temperatures 460 °C and 524 °C. The number density, volume fraction and composition of MNS-rich clusters have been characterised. Ni, Mn, Si and P is found to segregate at carbide matrix interface after irradiation at lower temperature and only P segregation is observed at 524 °C.
[Display omitted]</description><subject>Atom probe tomography</subject><subject>BOR60 reactor</subject><subject>Carbides</subject><subject>Clusters</subject><subject>Heat resistant steels</subject><subject>Irradiation</subject><subject>Manganese</subject><subject>Martensitic stainless steels</subject><subject>MNS-rich clusters</subject><subject>Neutron irradiation</subject><subject>Nickel</subject><subject>Precipitates</subject><subject>Reactors</subject><subject>Silicon</subject><subject>Steel</subject><subject>T91 steel</subject><subject>Tomography</subject><issn>0022-3115</issn><issn>1873-4820</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNqFkM1qHDEQhEVIIBs7jxAQ8XnW-p_RyTiLkxgMBuOchUbq8WrYldaSNuC3j4bxPadumqqi-kPoGyVbSqi6nrdzPLujrVtGWLtJJpT6gDZ06HknBkY-og0hjHWcUvkZfSllJoRITeQGwW5vs3UVcii2hhRxmnC0MXXF2QPgUwYXTqHaCgWHiH88PimCQ87Wh3bz-FlTXCrAAZ9LiC_Y1nRsrjQCblt6yfa0f7tEnyZ7KPD1fV6gPz_vnne_u4fHX_e724fOCUprNw3T6HupndWD0pPy_Si501R5Z8UoLR2c5SB67bjkoyZeaMcs4xMX3HNB-AX6vuamUoMpLlRwe5diBFcNVYpwwproahW1lq9nKNXM6Zxj62WY6NWgGJdLlFxVLqdSMkzmlMPR5jdDiVmwm9m8YzcLdrNib76b1Qftz78B8lIDogMf8tLCp_CfhH_c_I24</recordid><startdate>202101</startdate><enddate>202101</enddate><creator>Yeli, Guma</creator><creator>Strutt, Victoria C.I.</creator><creator>Auger, M.A.</creator><creator>Bagot, Paul A.J.</creator><creator>Moody, Michael P.</creator><general>Elsevier B.V</general><general>Elsevier BV</general><general>Elsevier</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SR</scope><scope>7ST</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>JG9</scope><scope>L7M</scope><scope>SOI</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000-0002-4553-6605</orcidid><orcidid>https://orcid.org/0000-0002-7391-3148</orcidid><orcidid>https://orcid.org/0000000245536605</orcidid><orcidid>https://orcid.org/0000000273913148</orcidid></search><sort><creationdate>202101</creationdate><title>Characterisation of nano-scale precipitates in BOR60 irradiated T91 steel using atom probe tomography</title><author>Yeli, Guma ; 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Atom probe tomography has characterised the microstructural changes in T91 steel after BOR60 reactor irradiation at five temperatures between 376 °C and 524 °C to doses between 14.6 dpa and 35.1 dpa. Irradiation-induced precipitation and segregation to carbide/matrix interface induced by neutron irradiation has been characterised. Atom probe tomography characterisation shows that Mn, Ni, Si -rich (MNS-rich) clusters form in T91 steel irradiated in BOR60 reactor at temperatures between 376 °C and 415 °C, which is not observed at higher temperatures 460 °C and 524 °C. The number density, volume fraction and composition of MNS-rich clusters have been characterised. Ni, Mn, Si and P is found to segregate at carbide matrix interface after irradiation at lower temperature and only P segregation is observed at 524 °C.
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| subjects | Atom probe tomography BOR60 reactor Carbides Clusters Heat resistant steels Irradiation Manganese Martensitic stainless steels MNS-rich clusters Neutron irradiation Nickel Precipitates Reactors Silicon Steel T91 steel Tomography |
| title | Characterisation of nano-scale precipitates in BOR60 irradiated T91 steel using atom probe tomography |
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