Coarsening of Al3Sc precipitates in Al-Mg-Sc alloys
The coarsening characteristics of Al3Sc precipitates in Al-5Mg-0.3Sc (in wt.%) alloys annealed at 300–450 °C were studied using transmission electron microscope (TEM), with the annealing temperature of the alloy found to have a significant influence on its coarsening rate. Increasing the temperature...
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| Veröffentlicht in: | Journal of alloys and compounds 2019-04, Vol.781, p.209-215 |
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| creator | Xu, Pian Jiang, Feng Tang, Zhongqin Yan, Ning Jiang, Jingyu Xu, Xuda Peng, Yongyi |
| description | The coarsening characteristics of Al3Sc precipitates in Al-5Mg-0.3Sc (in wt.%) alloys annealed at 300–450 °C were studied using transmission electron microscope (TEM), with the annealing temperature of the alloy found to have a significant influence on its coarsening rate. Increasing the temperature range from 300 to 450 °C resulted in the coarsening rate increasing by an order of magnitude for every 50 °C. Experimental precipitation results were well correlated with theoretical results produced using a KV model. The diffusion activation energy of the Al3Sc precipitates was shown to be around 189 ± 8 kJ mol−1, with the precipitates exhibiting good coherency with the aluminum matrix, even after being annealed at 300–450 °C for 168 h.
•The critical size for loss of coherency increased in the presence of Mg.•The coarsening rate of Al3Sc precipitates was measured.•The diffusion activation energy for Al3Sc precipitates was 189 ± 8 kJ mol−1. |
| doi_str_mv | 10.1016/j.jallcom.2018.12.133 |
| format | Article |
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•The critical size for loss of coherency increased in the presence of Mg.•The coarsening rate of Al3Sc precipitates was measured.•The diffusion activation energy for Al3Sc precipitates was 189 ± 8 kJ mol−1.</description><identifier>ISSN: 0925-8388</identifier><identifier>EISSN: 1873-4669</identifier><identifier>DOI: 10.1016/j.jallcom.2018.12.133</identifier><language>eng</language><publisher>Lausanne: Elsevier B.V</publisher><subject>Al-Mg-Sc alloy ; Al3Sc precipitates ; Aluminum base alloys ; Annealing ; Chemical precipitation ; Coarsening ; Coherency ; KV model ; Magnesium base alloys ; Precipitates ; Transmission electron microscopy</subject><ispartof>Journal of alloys and compounds, 2019-04, Vol.781, p.209-215</ispartof><rights>2018 Elsevier B.V.</rights><rights>Copyright Elsevier BV Apr 15, 2019</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c337t-f69a971053ab829620f38e28bf70f51168fb38a3897736b2f7f2b888d19150073</citedby><cites>FETCH-LOGICAL-c337t-f69a971053ab829620f38e28bf70f51168fb38a3897736b2f7f2b888d19150073</cites><orcidid>0000-0003-0239-259X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jallcom.2018.12.133$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,778,782,3539,27911,27912,45982</link.rule.ids></links><search><creatorcontrib>Xu, Pian</creatorcontrib><creatorcontrib>Jiang, Feng</creatorcontrib><creatorcontrib>Tang, Zhongqin</creatorcontrib><creatorcontrib>Yan, Ning</creatorcontrib><creatorcontrib>Jiang, Jingyu</creatorcontrib><creatorcontrib>Xu, Xuda</creatorcontrib><creatorcontrib>Peng, Yongyi</creatorcontrib><title>Coarsening of Al3Sc precipitates in Al-Mg-Sc alloys</title><title>Journal of alloys and compounds</title><description>The coarsening characteristics of Al3Sc precipitates in Al-5Mg-0.3Sc (in wt.%) alloys annealed at 300–450 °C were studied using transmission electron microscope (TEM), with the annealing temperature of the alloy found to have a significant influence on its coarsening rate. Increasing the temperature range from 300 to 450 °C resulted in the coarsening rate increasing by an order of magnitude for every 50 °C. Experimental precipitation results were well correlated with theoretical results produced using a KV model. The diffusion activation energy of the Al3Sc precipitates was shown to be around 189 ± 8 kJ mol−1, with the precipitates exhibiting good coherency with the aluminum matrix, even after being annealed at 300–450 °C for 168 h.
•The critical size for loss of coherency increased in the presence of Mg.•The coarsening rate of Al3Sc precipitates was measured.•The diffusion activation energy for Al3Sc precipitates was 189 ± 8 kJ mol−1.</description><subject>Al-Mg-Sc alloy</subject><subject>Al3Sc precipitates</subject><subject>Aluminum base alloys</subject><subject>Annealing</subject><subject>Chemical precipitation</subject><subject>Coarsening</subject><subject>Coherency</subject><subject>KV model</subject><subject>Magnesium base alloys</subject><subject>Precipitates</subject><subject>Transmission electron microscopy</subject><issn>0925-8388</issn><issn>1873-4669</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNqFkM1LAzEQxYMoWKt_grDgeddMxs3HSUrxCyoe1HPIbpOSZbtZk63Q_95oe_c0MPPeG36PkGugFVDgt13Vmb5vw7ZiFGQFrALEEzIDKbC841ydkhlVrC4lSnlOLlLqKKWgEGYEl8HEZAc_bIrgikWP720xRtv60U9msqnwQ96Wr5syH_KbsE-X5MyZPtmr45yTz8eHj-VzuXp7elkuVmWLKKbScWWUAFqjaSRTnFGH0jLZOEFdDcCla1AalEoI5A1zwrFGSrkGBTWlAufk5pA7xvC1s2nSXdjFIb_ULLNlBIGYVfVB1caQUrROj9FvTdxroPq3H93pYz_6tx8NTMOf7_7gsxnh29uoU-vt0Nq1z_iTXgf_T8IPCddtsg</recordid><startdate>20190415</startdate><enddate>20190415</enddate><creator>Xu, Pian</creator><creator>Jiang, Feng</creator><creator>Tang, Zhongqin</creator><creator>Yan, Ning</creator><creator>Jiang, Jingyu</creator><creator>Xu, Xuda</creator><creator>Peng, Yongyi</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><orcidid>https://orcid.org/0000-0003-0239-259X</orcidid></search><sort><creationdate>20190415</creationdate><title>Coarsening of Al3Sc precipitates in Al-Mg-Sc alloys</title><author>Xu, Pian ; Jiang, Feng ; Tang, Zhongqin ; Yan, Ning ; Jiang, Jingyu ; Xu, Xuda ; Peng, Yongyi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c337t-f69a971053ab829620f38e28bf70f51168fb38a3897736b2f7f2b888d19150073</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Al-Mg-Sc alloy</topic><topic>Al3Sc precipitates</topic><topic>Aluminum base alloys</topic><topic>Annealing</topic><topic>Chemical precipitation</topic><topic>Coarsening</topic><topic>Coherency</topic><topic>KV model</topic><topic>Magnesium base alloys</topic><topic>Precipitates</topic><topic>Transmission electron microscopy</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Xu, Pian</creatorcontrib><creatorcontrib>Jiang, Feng</creatorcontrib><creatorcontrib>Tang, Zhongqin</creatorcontrib><creatorcontrib>Yan, Ning</creatorcontrib><creatorcontrib>Jiang, Jingyu</creatorcontrib><creatorcontrib>Xu, Xuda</creatorcontrib><creatorcontrib>Peng, Yongyi</creatorcontrib><collection>CrossRef</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of alloys and compounds</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Xu, Pian</au><au>Jiang, Feng</au><au>Tang, Zhongqin</au><au>Yan, Ning</au><au>Jiang, Jingyu</au><au>Xu, Xuda</au><au>Peng, Yongyi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Coarsening of Al3Sc precipitates in Al-Mg-Sc alloys</atitle><jtitle>Journal of alloys and compounds</jtitle><date>2019-04-15</date><risdate>2019</risdate><volume>781</volume><spage>209</spage><epage>215</epage><pages>209-215</pages><issn>0925-8388</issn><eissn>1873-4669</eissn><abstract>The coarsening characteristics of Al3Sc precipitates in Al-5Mg-0.3Sc (in wt.%) alloys annealed at 300–450 °C were studied using transmission electron microscope (TEM), with the annealing temperature of the alloy found to have a significant influence on its coarsening rate. Increasing the temperature range from 300 to 450 °C resulted in the coarsening rate increasing by an order of magnitude for every 50 °C. Experimental precipitation results were well correlated with theoretical results produced using a KV model. The diffusion activation energy of the Al3Sc precipitates was shown to be around 189 ± 8 kJ mol−1, with the precipitates exhibiting good coherency with the aluminum matrix, even after being annealed at 300–450 °C for 168 h.
•The critical size for loss of coherency increased in the presence of Mg.•The coarsening rate of Al3Sc precipitates was measured.•The diffusion activation energy for Al3Sc precipitates was 189 ± 8 kJ mol−1.</abstract><cop>Lausanne</cop><pub>Elsevier B.V</pub><doi>10.1016/j.jallcom.2018.12.133</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0003-0239-259X</orcidid></addata></record> |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Al-Mg-Sc alloy Al3Sc precipitates Aluminum base alloys Annealing Chemical precipitation Coarsening Coherency KV model Magnesium base alloys Precipitates Transmission electron microscopy |
| title | Coarsening of Al3Sc precipitates in Al-Mg-Sc alloys |
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