Microstructure and mechanical properties of an extruded Mg-Dy-Ni alloy
The microstructure and mechanical properties of an extruded Mg-12Dy-1.1Ni alloy have been investigated in this paper. The microstructure of the as-extruded alloy consisted of α-Mg matrix, Mg2Dy phase and a lamellar long-period stacking order (LPSO) phase distributed along the extrusion direction. Ag...
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| Veröffentlicht in: | Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2019-07, Vol.760, p.246-257 |
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| container_title | Materials science & engineering. A, Structural materials : properties, microstructure and processing |
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| creator | Bi, Guangli Han, Yuxiang Jiang, Jing Li, Yuandong Zhang, Duyao Qiu, Dong Easton, Mark |
| description | The microstructure and mechanical properties of an extruded Mg-12Dy-1.1Ni alloy have been investigated in this paper. The microstructure of the as-extruded alloy consisted of α-Mg matrix, Mg2Dy phase and a lamellar long-period stacking order (LPSO) phase distributed along the extrusion direction. Ageing the extruded alloy at 250 °C showed double peaks at 54 h and 108 h during ageing. The first ageing peak was due to a high number density of blocky 18R LPSO phases in conjunction with the precipitation of underaged 14H LPSO phase. The second ageing peak mainly arose from the precipitation of high volume fraction of 14H LPSO phases in the grain interior. Tensile testing indicated that the extruded alloy aged for 108 h exhibited the highest yield and ultimate tensile strengths from room temperature to 300 °C. The high tensile strengths of the alloy are mainly attributed to grain refinement and precipitation strengthening of 14H LPSO phase and dispersion strengthening of blocky 18R LPSO phase. |
| doi_str_mv | 10.1016/j.msea.2019.06.006 |
| format | Article |
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The microstructure of the as-extruded alloy consisted of α-Mg matrix, Mg2Dy phase and a lamellar long-period stacking order (LPSO) phase distributed along the extrusion direction. Ageing the extruded alloy at 250 °C showed double peaks at 54 h and 108 h during ageing. The first ageing peak was due to a high number density of blocky 18R LPSO phases in conjunction with the precipitation of underaged 14H LPSO phase. The second ageing peak mainly arose from the precipitation of high volume fraction of 14H LPSO phases in the grain interior. Tensile testing indicated that the extruded alloy aged for 108 h exhibited the highest yield and ultimate tensile strengths from room temperature to 300 °C. The high tensile strengths of the alloy are mainly attributed to grain refinement and precipitation strengthening of 14H LPSO phase and dispersion strengthening of blocky 18R LPSO phase.</description><identifier>ISSN: 0921-5093</identifier><identifier>EISSN: 1873-4936</identifier><identifier>DOI: 10.1016/j.msea.2019.06.006</identifier><language>eng</language><publisher>Lausanne: Elsevier B.V</publisher><subject>Age-hardening behavior ; Aging (metallurgy) ; Dispersion strengthening ; Dysprosium base alloys ; Extruded Mg-Dy-Ni alloy ; Extrusion ; Grain refinement ; LPSO ; Mechanical properties ; Microstructure ; Precipitation hardening</subject><ispartof>Materials science & engineering. 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A, Structural materials : properties, microstructure and processing</title><description>The microstructure and mechanical properties of an extruded Mg-12Dy-1.1Ni alloy have been investigated in this paper. The microstructure of the as-extruded alloy consisted of α-Mg matrix, Mg2Dy phase and a lamellar long-period stacking order (LPSO) phase distributed along the extrusion direction. Ageing the extruded alloy at 250 °C showed double peaks at 54 h and 108 h during ageing. The first ageing peak was due to a high number density of blocky 18R LPSO phases in conjunction with the precipitation of underaged 14H LPSO phase. The second ageing peak mainly arose from the precipitation of high volume fraction of 14H LPSO phases in the grain interior. Tensile testing indicated that the extruded alloy aged for 108 h exhibited the highest yield and ultimate tensile strengths from room temperature to 300 °C. The high tensile strengths of the alloy are mainly attributed to grain refinement and precipitation strengthening of 14H LPSO phase and dispersion strengthening of blocky 18R LPSO phase.</description><subject>Age-hardening behavior</subject><subject>Aging (metallurgy)</subject><subject>Dispersion strengthening</subject><subject>Dysprosium base alloys</subject><subject>Extruded Mg-Dy-Ni alloy</subject><subject>Extrusion</subject><subject>Grain refinement</subject><subject>LPSO</subject><subject>Mechanical properties</subject><subject>Microstructure</subject><subject>Precipitation hardening</subject><issn>0921-5093</issn><issn>1873-4936</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNp9kDFPwzAQhS0EEqXwB5giMSec7cSJJRZUKCC1sMBsGfsMjtKk2Cmi_x5HZWa5G-69u3cfIZcUCgpUXLfFJqIuGFBZgCgAxBGZ0abmeSm5OCYzkIzmFUh-Ss5ibAGAllDNyHLtTRjiGHZm3AXMdG-zDZpP3Xuju2wbhi2G0WPMBpeGGf4kqUWbrT_yu33-7DPddcP-nJw43UW8-Otz8ra8f1085quXh6fF7So3XJZjbhi8U27BotNcTMVoU1NJGbW1cdo1rNFGouCi5hUF7WoDQrr0A9MVLfmcXB32pmBfO4yjaodd6NNJxVhTQ8UqgKRiB9X0Wgzo1Db4jQ57RUFNvFSrJl5q4qVAqMQrmW4OJkz5vz0GFY3H3qD1Ac2o7OD_s_8CoyRzfw</recordid><startdate>20190708</startdate><enddate>20190708</enddate><creator>Bi, Guangli</creator><creator>Han, Yuxiang</creator><creator>Jiang, Jing</creator><creator>Li, Yuandong</creator><creator>Zhang, Duyao</creator><creator>Qiu, Dong</creator><creator>Easton, Mark</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20190708</creationdate><title>Microstructure and mechanical properties of an extruded Mg-Dy-Ni alloy</title><author>Bi, Guangli ; Han, Yuxiang ; Jiang, Jing ; Li, Yuandong ; Zhang, Duyao ; Qiu, Dong ; Easton, Mark</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c394t-c20b13d0defa36efa3cac719121d7cfaf828ac9e63673510af7c069f9362a5143</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Age-hardening behavior</topic><topic>Aging (metallurgy)</topic><topic>Dispersion strengthening</topic><topic>Dysprosium base alloys</topic><topic>Extruded Mg-Dy-Ni alloy</topic><topic>Extrusion</topic><topic>Grain refinement</topic><topic>LPSO</topic><topic>Mechanical properties</topic><topic>Microstructure</topic><topic>Precipitation hardening</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bi, Guangli</creatorcontrib><creatorcontrib>Han, Yuxiang</creatorcontrib><creatorcontrib>Jiang, Jing</creatorcontrib><creatorcontrib>Li, Yuandong</creatorcontrib><creatorcontrib>Zhang, Duyao</creatorcontrib><creatorcontrib>Qiu, Dong</creatorcontrib><creatorcontrib>Easton, Mark</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Materials science & engineering. A, Structural materials : properties, microstructure and processing</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bi, Guangli</au><au>Han, Yuxiang</au><au>Jiang, Jing</au><au>Li, Yuandong</au><au>Zhang, Duyao</au><au>Qiu, Dong</au><au>Easton, Mark</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Microstructure and mechanical properties of an extruded Mg-Dy-Ni alloy</atitle><jtitle>Materials science & engineering. A, Structural materials : properties, microstructure and processing</jtitle><date>2019-07-08</date><risdate>2019</risdate><volume>760</volume><spage>246</spage><epage>257</epage><pages>246-257</pages><issn>0921-5093</issn><eissn>1873-4936</eissn><abstract>The microstructure and mechanical properties of an extruded Mg-12Dy-1.1Ni alloy have been investigated in this paper. The microstructure of the as-extruded alloy consisted of α-Mg matrix, Mg2Dy phase and a lamellar long-period stacking order (LPSO) phase distributed along the extrusion direction. Ageing the extruded alloy at 250 °C showed double peaks at 54 h and 108 h during ageing. The first ageing peak was due to a high number density of blocky 18R LPSO phases in conjunction with the precipitation of underaged 14H LPSO phase. The second ageing peak mainly arose from the precipitation of high volume fraction of 14H LPSO phases in the grain interior. Tensile testing indicated that the extruded alloy aged for 108 h exhibited the highest yield and ultimate tensile strengths from room temperature to 300 °C. The high tensile strengths of the alloy are mainly attributed to grain refinement and precipitation strengthening of 14H LPSO phase and dispersion strengthening of blocky 18R LPSO phase.</abstract><cop>Lausanne</cop><pub>Elsevier B.V</pub><doi>10.1016/j.msea.2019.06.006</doi><tpages>12</tpages></addata></record> |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Age-hardening behavior Aging (metallurgy) Dispersion strengthening Dysprosium base alloys Extruded Mg-Dy-Ni alloy Extrusion Grain refinement LPSO Mechanical properties Microstructure Precipitation hardening |
| title | Microstructure and mechanical properties of an extruded Mg-Dy-Ni alloy |
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