Structures of Al2Sm phase in a high-pressure die-cast Mg–4Al–4Sm–0.3Mn alloy
The structures of a petaloid phase, which acts as the dominant intermetallic phase in a high-pressure die-cast Mg–4Al–4Sm–0.3Mn alloy with outstanding ductility and strength, were thoroughly studied in this work. The results indicate that the petaloid phase is Al2Sm phase (face-centered cubic struct...
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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.396-402 |
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| container_title | Materials science & engineering. A, Structural materials : properties, microstructure and processing |
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| creator | Yang, Qiang Guan, Kai Qiu, Xin Zhang, Deping Lv, Shuhui Bu, Fanqiang Zhang, Yaqin Liu, Xiaojuan Meng, Jian |
| description | The structures of a petaloid phase, which acts as the dominant intermetallic phase in a high-pressure die-cast Mg–4Al–4Sm–0.3Mn alloy with outstanding ductility and strength, were thoroughly studied in this work. The results indicate that the petaloid phase is Al2Sm phase (face-centered cubic structure: a=0.7945nm), not Al11Sm3, and composed of multiple (111) twins with the (111) plane serving as the twinning plane. However, most (111) twins are extraordinarily different from the conventional one, featuring a sandwiched structure with the filling being Al12Sm2Mn5 phase. Nevertheless, the appearance of Al12Sm2Mn5 bands is not always accompanied with twins. Finally, the underlying mechanisms for the peculiar Al2Sm structures were carefully discussed and revealed as a random heterogeneous nucleation of the Al2Sm phase on the pre-existed Al12Sm2Mn5 sites during solidification. |
| doi_str_mv | 10.1016/j.msea.2016.08.066 |
| format | Article |
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The results indicate that the petaloid phase is Al2Sm phase (face-centered cubic structure: a=0.7945nm), not Al11Sm3, and composed of multiple (111) twins with the (111) plane serving as the twinning plane. However, most (111) twins are extraordinarily different from the conventional one, featuring a sandwiched structure with the filling being Al12Sm2Mn5 phase. Nevertheless, the appearance of Al12Sm2Mn5 bands is not always accompanied with twins. Finally, the underlying mechanisms for the peculiar Al2Sm structures were carefully discussed and revealed as a random heterogeneous nucleation of the Al2Sm phase on the pre-existed Al12Sm2Mn5 sites during solidification.</description><identifier>ISSN: 0921-5093</identifier><identifier>EISSN: 1873-4936</identifier><identifier>DOI: 10.1016/j.msea.2016.08.066</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Ductility ; Heterogeneous nucleation ; Intermetallic phases ; Magnesium alloys ; Magnesium base alloys ; Microstructure ; Nucleation ; Planes ; Solidification ; Transmission electron microscopy (TEM) ; Twinning</subject><ispartof>Materials science & engineering. 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A, Structural materials : properties, microstructure and processing</title><description>The structures of a petaloid phase, which acts as the dominant intermetallic phase in a high-pressure die-cast Mg–4Al–4Sm–0.3Mn alloy with outstanding ductility and strength, were thoroughly studied in this work. The results indicate that the petaloid phase is Al2Sm phase (face-centered cubic structure: a=0.7945nm), not Al11Sm3, and composed of multiple (111) twins with the (111) plane serving as the twinning plane. However, most (111) twins are extraordinarily different from the conventional one, featuring a sandwiched structure with the filling being Al12Sm2Mn5 phase. Nevertheless, the appearance of Al12Sm2Mn5 bands is not always accompanied with twins. Finally, the underlying mechanisms for the peculiar Al2Sm structures were carefully discussed and revealed as a random heterogeneous nucleation of the Al2Sm phase on the pre-existed Al12Sm2Mn5 sites during solidification.</description><subject>Ductility</subject><subject>Heterogeneous nucleation</subject><subject>Intermetallic phases</subject><subject>Magnesium alloys</subject><subject>Magnesium base alloys</subject><subject>Microstructure</subject><subject>Nucleation</subject><subject>Planes</subject><subject>Solidification</subject><subject>Transmission electron microscopy (TEM)</subject><subject>Twinning</subject><issn>0921-5093</issn><issn>1873-4936</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNp9kE1OwzAQhS0EEqVwAVZeskkYx0lsS2yqij-pFRKFteXYTusqaYKdInXHHbghJ8FRWbN5M9K8N9L7ELomkBIg5e02bYNVaRb3FHgKZXmCJoQzmuSClqdoAiIjSQGCnqOLELYAQHIoJuh1Nfi9HvbeBtzVeNZkqxb3GxUsdjus8MatN0kfryFasHE20SoMeLn--frOZ82oqzYqpHQZ_U3THS7RWa2aYK_-5hS9P9y_zZ-Sxcvj83y2SDQVYkhYpowpa0VYIXKlKYOKEKh5ZRjhihpacMZIUVZ1VWVVxQ0XVUmMIhzAZKSgU3Rz_Nv77mNvwyBbF7RtGrWz3T5IwmlR5kxEClOUHa3adyF4W8veu1b5gyQgR4ByK0eAcgQogcsIMIbujiEbS3w662XQzu60Nc5bPUjTuf_ivxd_eow</recordid><startdate>20161015</startdate><enddate>20161015</enddate><creator>Yang, Qiang</creator><creator>Guan, Kai</creator><creator>Qiu, Xin</creator><creator>Zhang, Deping</creator><creator>Lv, Shuhui</creator><creator>Bu, Fanqiang</creator><creator>Zhang, Yaqin</creator><creator>Liu, Xiaojuan</creator><creator>Meng, Jian</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>Structures of Al2Sm phase in a high-pressure die-cast Mg–4Al–4Sm–0.3Mn alloy</title><author>Yang, Qiang ; Guan, Kai ; Qiu, Xin ; Zhang, Deping ; Lv, Shuhui ; Bu, Fanqiang ; Zhang, Yaqin ; Liu, Xiaojuan ; Meng, Jian</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c399t-72add6fa17594ac370b110f8bd718a3d35877156bfbb2bb8d89b61da1800d2153</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Ductility</topic><topic>Heterogeneous nucleation</topic><topic>Intermetallic phases</topic><topic>Magnesium alloys</topic><topic>Magnesium base alloys</topic><topic>Microstructure</topic><topic>Nucleation</topic><topic>Planes</topic><topic>Solidification</topic><topic>Transmission electron microscopy (TEM)</topic><topic>Twinning</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yang, Qiang</creatorcontrib><creatorcontrib>Guan, Kai</creatorcontrib><creatorcontrib>Qiu, Xin</creatorcontrib><creatorcontrib>Zhang, Deping</creatorcontrib><creatorcontrib>Lv, Shuhui</creatorcontrib><creatorcontrib>Bu, Fanqiang</creatorcontrib><creatorcontrib>Zhang, Yaqin</creatorcontrib><creatorcontrib>Liu, Xiaojuan</creatorcontrib><creatorcontrib>Meng, Jian</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. A, Structural materials : properties, microstructure and processing</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yang, Qiang</au><au>Guan, Kai</au><au>Qiu, Xin</au><au>Zhang, Deping</au><au>Lv, Shuhui</au><au>Bu, Fanqiang</au><au>Zhang, Yaqin</au><au>Liu, Xiaojuan</au><au>Meng, Jian</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Structures of Al2Sm phase in a high-pressure die-cast Mg–4Al–4Sm–0.3Mn alloy</atitle><jtitle>Materials science & engineering. A, Structural materials : properties, microstructure and processing</jtitle><date>2016-10-15</date><risdate>2016</risdate><volume>675</volume><spage>396</spage><epage>402</epage><pages>396-402</pages><issn>0921-5093</issn><eissn>1873-4936</eissn><abstract>The structures of a petaloid phase, which acts as the dominant intermetallic phase in a high-pressure die-cast Mg–4Al–4Sm–0.3Mn alloy with outstanding ductility and strength, were thoroughly studied in this work. The results indicate that the petaloid phase is Al2Sm phase (face-centered cubic structure: a=0.7945nm), not Al11Sm3, and composed of multiple (111) twins with the (111) plane serving as the twinning plane. However, most (111) twins are extraordinarily different from the conventional one, featuring a sandwiched structure with the filling being Al12Sm2Mn5 phase. Nevertheless, the appearance of Al12Sm2Mn5 bands is not always accompanied with twins. Finally, the underlying mechanisms for the peculiar Al2Sm structures were carefully discussed and revealed as a random heterogeneous nucleation of the Al2Sm phase on the pre-existed Al12Sm2Mn5 sites during solidification.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.msea.2016.08.066</doi><tpages>7</tpages></addata></record> |
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| subjects | Ductility Heterogeneous nucleation Intermetallic phases Magnesium alloys Magnesium base alloys Microstructure Nucleation Planes Solidification Transmission electron microscopy (TEM) Twinning |
| title | Structures of Al2Sm phase in a high-pressure die-cast Mg–4Al–4Sm–0.3Mn alloy |
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