Composition of β ″ precipitates in Al-Mg-Si alloys by atom probe tomography and first principles calculations
The composition of β ″ precipitates in an Al-Mg-Si alloy has been investigated by atom probe tomography, ab initio density functional calculations, and quantitative electron diffraction. Atom probe analysis of an Al-0.72% Si-0.58% Mg (at.%) alloy heat treated at 175 ° C for 36 h shows that the β ″ p...
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| Veröffentlicht in: | Journal of applied physics 2009-12, Vol.106 (12), p.123527-123527-9 |
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| creator | Hasting, Håkon S. Frøseth, Anders G. Andersen, Sigmund J. Vissers, Rene Walmsley, John C. Marioara, Calin D. Danoix, Frédéric Lefebvre, Williams Holmestad, Randi |
| description | The composition of
β
″
precipitates in an Al-Mg-Si alloy has been investigated by atom probe tomography,
ab initio
density functional calculations, and quantitative electron diffraction. Atom probe analysis of an Al-0.72% Si-0.58% Mg (at.%) alloy heat treated at
175
°
C
for 36 h shows that the
β
″
phase contains
∼
20
at
.
%
Al and has a Mg/Si-ratio of 1.1, after correcting for a local magnification effect and for the influence of uneven evaporation rates. The composition difference is explained by an exchange of some Si with Al relative to the published
β
″
-Mg
5
Si
6
structure.
Ab initio
calculations show that replacing the
Si
3
-site by aluminum leads to energetically favorable compositions consistent with the other phases in the precipitation sequence. Quantitative electron nanodiffraction is relatively insensitive to this substitution of Al by Si in the
β
″
-phase. |
| doi_str_mv | 10.1063/1.3269714 |
| format | Article |
| fullrecord | <record><control><sourceid>scitation_cross</sourceid><recordid>TN_cdi_crossref_primary_10_1063_1_3269714</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>jap</sourcerecordid><originalsourceid>FETCH-LOGICAL-c278t-49dab854f5240b0f0d2ff2279f270cb32dde96c7bd9f547a5d99f635ce29b4313</originalsourceid><addsrcrecordid>eNp1kD1OAzEQhS0EEiFQcAO3FA7-Wa_XZRQBQQqiAOqVf4ORs16tlyIdZ4J7cAhOgqOkoKGa0cynN28eAJcEzwiu2TWZMVpLQaojMCG4kUhwjo_BBGNKUCOFPAVnOb9hTEjD5AT0i7TpUw5jSB1MHn5_wp-PL9gPzoQ-jGp0GYYOziN6WKOnAFWMaZuh3kI1pk3hknawdGk9qP61TDsLfRjyWFahKxqxCBgVzXtUuxv5HJx4FbO7ONQpeLm9eV4s0erx7n4xXyFDRTOiSlqlG155TiussceWek-pkJ4KbDSj1jpZG6Gt9LwSilspfc24cVTqihE2BVd7XTOknAfn22Joo4ZtS3C7i6ol7SGqwjZ7Npvdy8Xm__CfvNrk2S8EQHIH</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Composition of β ″ precipitates in Al-Mg-Si alloys by atom probe tomography and first principles calculations</title><source>AIP Journals Complete</source><source>AIP Digital Archive</source><source>Alma/SFX Local Collection</source><creator>Hasting, Håkon S. ; Frøseth, Anders G. ; Andersen, Sigmund J. ; Vissers, Rene ; Walmsley, John C. ; Marioara, Calin D. ; Danoix, Frédéric ; Lefebvre, Williams ; Holmestad, Randi</creator><creatorcontrib>Hasting, Håkon S. ; Frøseth, Anders G. ; Andersen, Sigmund J. ; Vissers, Rene ; Walmsley, John C. ; Marioara, Calin D. ; Danoix, Frédéric ; Lefebvre, Williams ; Holmestad, Randi</creatorcontrib><description>The composition of
β
″
precipitates in an Al-Mg-Si alloy has been investigated by atom probe tomography,
ab initio
density functional calculations, and quantitative electron diffraction. Atom probe analysis of an Al-0.72% Si-0.58% Mg (at.%) alloy heat treated at
175
°
C
for 36 h shows that the
β
″
phase contains
∼
20
at
.
%
Al and has a Mg/Si-ratio of 1.1, after correcting for a local magnification effect and for the influence of uneven evaporation rates. The composition difference is explained by an exchange of some Si with Al relative to the published
β
″
-Mg
5
Si
6
structure.
Ab initio
calculations show that replacing the
Si
3
-site by aluminum leads to energetically favorable compositions consistent with the other phases in the precipitation sequence. Quantitative electron nanodiffraction is relatively insensitive to this substitution of Al by Si in the
β
″
-phase.</description><identifier>ISSN: 0021-8979</identifier><identifier>EISSN: 1089-7550</identifier><identifier>DOI: 10.1063/1.3269714</identifier><identifier>CODEN: JAPIAU</identifier><language>eng</language><publisher>American Institute of Physics</publisher><ispartof>Journal of applied physics, 2009-12, Vol.106 (12), p.123527-123527-9</ispartof><rights>2009 American Institute of Physics</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c278t-49dab854f5240b0f0d2ff2279f270cb32dde96c7bd9f547a5d99f635ce29b4313</citedby><cites>FETCH-LOGICAL-c278t-49dab854f5240b0f0d2ff2279f270cb32dde96c7bd9f547a5d99f635ce29b4313</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/jap/article-lookup/doi/10.1063/1.3269714$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>314,776,780,790,1553,4498,27901,27902,76127,76133</link.rule.ids></links><search><creatorcontrib>Hasting, Håkon S.</creatorcontrib><creatorcontrib>Frøseth, Anders G.</creatorcontrib><creatorcontrib>Andersen, Sigmund J.</creatorcontrib><creatorcontrib>Vissers, Rene</creatorcontrib><creatorcontrib>Walmsley, John C.</creatorcontrib><creatorcontrib>Marioara, Calin D.</creatorcontrib><creatorcontrib>Danoix, Frédéric</creatorcontrib><creatorcontrib>Lefebvre, Williams</creatorcontrib><creatorcontrib>Holmestad, Randi</creatorcontrib><title>Composition of β ″ precipitates in Al-Mg-Si alloys by atom probe tomography and first principles calculations</title><title>Journal of applied physics</title><description>The composition of
β
″
precipitates in an Al-Mg-Si alloy has been investigated by atom probe tomography,
ab initio
density functional calculations, and quantitative electron diffraction. Atom probe analysis of an Al-0.72% Si-0.58% Mg (at.%) alloy heat treated at
175
°
C
for 36 h shows that the
β
″
phase contains
∼
20
at
.
%
Al and has a Mg/Si-ratio of 1.1, after correcting for a local magnification effect and for the influence of uneven evaporation rates. The composition difference is explained by an exchange of some Si with Al relative to the published
β
″
-Mg
5
Si
6
structure.
Ab initio
calculations show that replacing the
Si
3
-site by aluminum leads to energetically favorable compositions consistent with the other phases in the precipitation sequence. Quantitative electron nanodiffraction is relatively insensitive to this substitution of Al by Si in the
β
″
-phase.</description><issn>0021-8979</issn><issn>1089-7550</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><recordid>eNp1kD1OAzEQhS0EEiFQcAO3FA7-Wa_XZRQBQQqiAOqVf4ORs16tlyIdZ4J7cAhOgqOkoKGa0cynN28eAJcEzwiu2TWZMVpLQaojMCG4kUhwjo_BBGNKUCOFPAVnOb9hTEjD5AT0i7TpUw5jSB1MHn5_wp-PL9gPzoQ-jGp0GYYOziN6WKOnAFWMaZuh3kI1pk3hknawdGk9qP61TDsLfRjyWFahKxqxCBgVzXtUuxv5HJx4FbO7ONQpeLm9eV4s0erx7n4xXyFDRTOiSlqlG155TiussceWek-pkJ4KbDSj1jpZG6Gt9LwSilspfc24cVTqihE2BVd7XTOknAfn22Joo4ZtS3C7i6ol7SGqwjZ7Npvdy8Xm__CfvNrk2S8EQHIH</recordid><startdate>20091215</startdate><enddate>20091215</enddate><creator>Hasting, Håkon S.</creator><creator>Frøseth, Anders G.</creator><creator>Andersen, Sigmund J.</creator><creator>Vissers, Rene</creator><creator>Walmsley, John C.</creator><creator>Marioara, Calin D.</creator><creator>Danoix, Frédéric</creator><creator>Lefebvre, Williams</creator><creator>Holmestad, Randi</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20091215</creationdate><title>Composition of β ″ precipitates in Al-Mg-Si alloys by atom probe tomography and first principles calculations</title><author>Hasting, Håkon S. ; Frøseth, Anders G. ; Andersen, Sigmund J. ; Vissers, Rene ; Walmsley, John C. ; Marioara, Calin D. ; Danoix, Frédéric ; Lefebvre, Williams ; Holmestad, Randi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c278t-49dab854f5240b0f0d2ff2279f270cb32dde96c7bd9f547a5d99f635ce29b4313</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hasting, Håkon S.</creatorcontrib><creatorcontrib>Frøseth, Anders G.</creatorcontrib><creatorcontrib>Andersen, Sigmund J.</creatorcontrib><creatorcontrib>Vissers, Rene</creatorcontrib><creatorcontrib>Walmsley, John C.</creatorcontrib><creatorcontrib>Marioara, Calin D.</creatorcontrib><creatorcontrib>Danoix, Frédéric</creatorcontrib><creatorcontrib>Lefebvre, Williams</creatorcontrib><creatorcontrib>Holmestad, Randi</creatorcontrib><collection>CrossRef</collection><jtitle>Journal of applied physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hasting, Håkon S.</au><au>Frøseth, Anders G.</au><au>Andersen, Sigmund J.</au><au>Vissers, Rene</au><au>Walmsley, John C.</au><au>Marioara, Calin D.</au><au>Danoix, Frédéric</au><au>Lefebvre, Williams</au><au>Holmestad, Randi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Composition of β ″ precipitates in Al-Mg-Si alloys by atom probe tomography and first principles calculations</atitle><jtitle>Journal of applied physics</jtitle><date>2009-12-15</date><risdate>2009</risdate><volume>106</volume><issue>12</issue><spage>123527</spage><epage>123527-9</epage><pages>123527-123527-9</pages><issn>0021-8979</issn><eissn>1089-7550</eissn><coden>JAPIAU</coden><abstract>The composition of
β
″
precipitates in an Al-Mg-Si alloy has been investigated by atom probe tomography,
ab initio
density functional calculations, and quantitative electron diffraction. Atom probe analysis of an Al-0.72% Si-0.58% Mg (at.%) alloy heat treated at
175
°
C
for 36 h shows that the
β
″
phase contains
∼
20
at
.
%
Al and has a Mg/Si-ratio of 1.1, after correcting for a local magnification effect and for the influence of uneven evaporation rates. The composition difference is explained by an exchange of some Si with Al relative to the published
β
″
-Mg
5
Si
6
structure.
Ab initio
calculations show that replacing the
Si
3
-site by aluminum leads to energetically favorable compositions consistent with the other phases in the precipitation sequence. Quantitative electron nanodiffraction is relatively insensitive to this substitution of Al by Si in the
β
″
-phase.</abstract><pub>American Institute of Physics</pub><doi>10.1063/1.3269714</doi></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0021-8979 |
| ispartof | Journal of applied physics, 2009-12, Vol.106 (12), p.123527-123527-9 |
| issn | 0021-8979 1089-7550 |
| language | eng |
| recordid | cdi_crossref_primary_10_1063_1_3269714 |
| source | AIP Journals Complete; AIP Digital Archive; Alma/SFX Local Collection |
| title | Composition of β ″ precipitates in Al-Mg-Si alloys by atom probe tomography and first principles calculations |
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