Achieving excellent thermal stability and very high activation energy in an ultrafine-grained magnesium silver rare earth alloy prepared by friction stir processing
Ultrafine-grained microstructure of a QE22 alloy prepared by Friction Stir processing (FSP) is isochronally annealed to study the thermal stability and grain growth kinetics. The FSPed microstructure of QE22 alloy is thermally stable under ultrafine-grained regime up to 300°C and the activation ener...
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| Veröffentlicht in: | Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2016-10, Vol.675, p.338-344 |
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| container_title | Materials science & engineering. A, Structural materials : properties, microstructure and processing |
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| creator | Khan MD, F. Panigrahi, S.K. |
| description | Ultrafine-grained microstructure of a QE22 alloy prepared by Friction Stir processing (FSP) is isochronally annealed to study the thermal stability and grain growth kinetics. The FSPed microstructure of QE22 alloy is thermally stable under ultrafine-grained regime up to 300°C and the activation energy required for grain growth is found to be exceptionally high as compared to conventional ultrafine-grained magnesium alloys. The high thermal stability and activation energy of the FSPed QE22 alloy is due to Zener pinning effect from thermally stable eutectic Mg12Nd and fine precipitates Mg12Nd2Ag and solute drag effect from segregation of Neodymium (Nd) solute atoms at grain boundaries. |
| doi_str_mv | 10.1016/j.msea.2016.08.077 |
| format | Article |
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The FSPed microstructure of QE22 alloy is thermally stable under ultrafine-grained regime up to 300°C and the activation energy required for grain growth is found to be exceptionally high as compared to conventional ultrafine-grained magnesium alloys. The high thermal stability and activation energy of the FSPed QE22 alloy is due to Zener pinning effect from thermally stable eutectic Mg12Nd and fine precipitates Mg12Nd2Ag and solute drag effect from segregation of Neodymium (Nd) solute atoms at grain boundaries.</description><identifier>ISSN: 0921-5093</identifier><identifier>EISSN: 1873-4936</identifier><identifier>DOI: 10.1016/j.msea.2016.08.077</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Activation energy ; Friction stir processing ; Grain growth ; Magnesium rare earth alloy ; Microstructure ; Neodymium ; Rare earth alloys ; Segregations ; Solute drag effect ; Thermal stability ; Ultrafine-grained microstructure ; Zener pinning effect</subject><ispartof>Materials science & engineering. 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The high thermal stability and activation energy of the FSPed QE22 alloy is due to Zener pinning effect from thermally stable eutectic Mg12Nd and fine precipitates Mg12Nd2Ag and solute drag effect from segregation of Neodymium (Nd) solute atoms at grain boundaries.</description><subject>Activation energy</subject><subject>Friction stir processing</subject><subject>Grain growth</subject><subject>Magnesium rare earth alloy</subject><subject>Microstructure</subject><subject>Neodymium</subject><subject>Rare earth alloys</subject><subject>Segregations</subject><subject>Solute drag effect</subject><subject>Thermal stability</subject><subject>Ultrafine-grained microstructure</subject><subject>Zener pinning effect</subject><issn>0921-5093</issn><issn>1873-4936</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNp9Ubtu3DAQFIIEyMXJD7himUYKJUqiCLgxjLwAA26cmliRK90eKOpM8g7R_-RDzculTrWL3ZnZxxTFbc2rmtf9l0O1RISqyXnFh4pL-abY1YMUZatE_7bYcdXUZceVeF98iPHAOa9b3u2KP_dmT3gmPzP8bdA59ImlPYYFHIsJRnKUNgbesjOGje1p3jMwic6QaPUMPYZ5Y-QzhJ1cCjCRx3IOkINlC8weI50WFsllARYgIEMIKas4t27sGPCYa5aNG5sCmb-qMVHIndVgjHm1j8W7CVzET__iTfHr29fnhx_l49P3nw_3j6URSqUS2gatbZWCCSSobhpU10gYYZyGnI4WbNfXStlRjsKY3tipnzJADoMYrezFTfH5qptHv5wwJr1QvDwFPK6nqOtBdL2QXdtlaHOFmrDGGHDSx0ALhE3XXF8s0Qd9sURfLNF80NmSTLq7kjAfcSYMOhpCb9BSQJO0Xel_9Fe-ipsz</recordid><startdate>20161015</startdate><enddate>20161015</enddate><creator>Khan MD, F.</creator><creator>Panigrahi, S.K.</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20161015</creationdate><title>Achieving excellent thermal stability and very high activation energy in an ultrafine-grained magnesium silver rare earth alloy prepared by friction stir processing</title><author>Khan MD, F. ; Panigrahi, S.K.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c399t-a42edd499afa7a95f89527ababf8895bdad56199db7b3cc6cdf6f27a7883bd763</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Activation energy</topic><topic>Friction stir processing</topic><topic>Grain growth</topic><topic>Magnesium rare earth alloy</topic><topic>Microstructure</topic><topic>Neodymium</topic><topic>Rare earth alloys</topic><topic>Segregations</topic><topic>Solute drag effect</topic><topic>Thermal stability</topic><topic>Ultrafine-grained microstructure</topic><topic>Zener pinning effect</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Khan MD, F.</creatorcontrib><creatorcontrib>Panigrahi, S.K.</creatorcontrib><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Materials science & engineering. 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| ispartof | Materials science & engineering. A, Structural materials : properties, microstructure and processing, 2016-10, Vol.675, p.338-344 |
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| language | eng |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Activation energy Friction stir processing Grain growth Magnesium rare earth alloy Microstructure Neodymium Rare earth alloys Segregations Solute drag effect Thermal stability Ultrafine-grained microstructure Zener pinning effect |
| title | Achieving excellent thermal stability and very high activation energy in an ultrafine-grained magnesium silver rare earth alloy prepared by friction stir processing |
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