Effect of Initial Grain Size on Microstructure and Mechanical Properties of Extruded Mg-9Al-0.6Zn Alloy
The effect of initial grain size on the microstructural evolution and tensile properties of an extruded Mg-9Al-0.6Zn alloy was investigated using homogenized billets with grain sizes of 411 and 87 μ m. It is found that although dynamically recrystallized (DRXed) grains remain the same size regardle...
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| Veröffentlicht in: | Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2015-12, Vol.46 (12), p.5482-5488 |
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| container_title | Metallurgical and materials transactions. A, Physical metallurgy and materials science |
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| creator | Park, Sung Hyuk Bae, Jun Ho Kim, Sang-Hoon Yoon, Jonghun You, Bong Sun |
| description | The effect of initial grain size on the microstructural evolution and tensile properties of an extruded Mg-9Al-0.6Zn alloy was investigated using homogenized billets with grain sizes of 411 and 87
μ
m. It is found that although dynamically recrystallized (DRXed) grains remain the same size regardless of the initial grain size, a finer-grained billet results in a significant reduction of the size and area fraction of un-DRXed grains through an increase in grain boundaries capable of acting as nucleation sites for DRX during hot extrusion. This increase in the fraction of DRXed grains, combined with more precipitates, improves the tensile yield strength of the extruded alloy. The elongation is also significantly improved, as the reduction in unDRXed grains suppresses the formation of twins that cause micro-cracks. This increased ductility subsequently results in an increase in ultimate tensile strength through continuous strain hardening. |
| doi_str_mv | 10.1007/s11661-015-3164-1 |
| format | Article |
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μ
m. It is found that although dynamically recrystallized (DRXed) grains remain the same size regardless of the initial grain size, a finer-grained billet results in a significant reduction of the size and area fraction of un-DRXed grains through an increase in grain boundaries capable of acting as nucleation sites for DRX during hot extrusion. This increase in the fraction of DRXed grains, combined with more precipitates, improves the tensile yield strength of the extruded alloy. The elongation is also significantly improved, as the reduction in unDRXed grains suppresses the formation of twins that cause micro-cracks. This increased ductility subsequently results in an increase in ultimate tensile strength through continuous strain hardening.</description><identifier>ISSN: 1073-5623</identifier><identifier>EISSN: 1543-1940</identifier><identifier>DOI: 10.1007/s11661-015-3164-1</identifier><identifier>CODEN: MMTAEB</identifier><language>eng</language><publisher>New York: Springer US</publisher><subject>Alloys ; Characterization and Evaluation of Materials ; Chemistry and Materials Science ; Communication ; Cracks ; Grain size ; Magnesium ; Materials Science ; Mechanical properties ; Metallic Materials ; Microstructure ; Nanotechnology ; Structural Materials ; Surfaces and Interfaces ; Tensile strength ; Thin Films</subject><ispartof>Metallurgical and materials transactions. A, Physical metallurgy and materials science, 2015-12, Vol.46 (12), p.5482-5488</ispartof><rights>The Minerals, Metals & Materials Society and ASM International 2015</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c452t-4cb1f86a66e1172a75beda355cc0a594091f97896d526c1221d9d3b2479793c33</citedby><cites>FETCH-LOGICAL-c452t-4cb1f86a66e1172a75beda355cc0a594091f97896d526c1221d9d3b2479793c33</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11661-015-3164-1$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11661-015-3164-1$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>315,781,785,27928,27929,41492,42561,51323</link.rule.ids></links><search><creatorcontrib>Park, Sung Hyuk</creatorcontrib><creatorcontrib>Bae, Jun Ho</creatorcontrib><creatorcontrib>Kim, Sang-Hoon</creatorcontrib><creatorcontrib>Yoon, Jonghun</creatorcontrib><creatorcontrib>You, Bong Sun</creatorcontrib><title>Effect of Initial Grain Size on Microstructure and Mechanical Properties of Extruded Mg-9Al-0.6Zn Alloy</title><title>Metallurgical and materials transactions. A, Physical metallurgy and materials science</title><addtitle>Metall Mater Trans A</addtitle><description>The effect of initial grain size on the microstructural evolution and tensile properties of an extruded Mg-9Al-0.6Zn alloy was investigated using homogenized billets with grain sizes of 411 and 87
μ
m. It is found that although dynamically recrystallized (DRXed) grains remain the same size regardless of the initial grain size, a finer-grained billet results in a significant reduction of the size and area fraction of un-DRXed grains through an increase in grain boundaries capable of acting as nucleation sites for DRX during hot extrusion. This increase in the fraction of DRXed grains, combined with more precipitates, improves the tensile yield strength of the extruded alloy. The elongation is also significantly improved, as the reduction in unDRXed grains suppresses the formation of twins that cause micro-cracks. This increased ductility subsequently results in an increase in ultimate tensile strength through continuous strain hardening.</description><subject>Alloys</subject><subject>Characterization and Evaluation of Materials</subject><subject>Chemistry and Materials Science</subject><subject>Communication</subject><subject>Cracks</subject><subject>Grain size</subject><subject>Magnesium</subject><subject>Materials Science</subject><subject>Mechanical properties</subject><subject>Metallic Materials</subject><subject>Microstructure</subject><subject>Nanotechnology</subject><subject>Structural Materials</subject><subject>Surfaces and Interfaces</subject><subject>Tensile strength</subject><subject>Thin Films</subject><issn>1073-5623</issn><issn>1543-1940</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNp1kMFKAzEQhoMoWKsP4C3gOZpJNklzLKXWQouCevES0my2blmzNdkF69ObpR68eJo5fP8_zIfQNdBboFTdJQApgVAQhIMsCJygEYiCE9AFPc07VZwIyfg5ukhpRykFzeUIbedV5V2H2wovQ93VtsGLaOuAn-tvj9uA17WLbepi77o-emxDidfevdtQu8w-xXbvY1f7NDTMvzJX-kxsiZ42hN7Kt4CnTdMeLtFZZZvkr37nGL3ez19mD2T1uFjOpiviCsE6UrgNVBNppfQAilklNr60XAjnqBX5FQ2VVhMtS8GkA8ag1CXfsEJppbnjfIxujr372H72PnVm1_Yx5JMGFKdCS1YMFByp4bcUfWX2sf6w8WCAmsGnOfo02acZfBrIGXbMpMyGrY9_mv8N_QC44XYm</recordid><startdate>20151201</startdate><enddate>20151201</enddate><creator>Park, Sung Hyuk</creator><creator>Bae, Jun Ho</creator><creator>Kim, Sang-Hoon</creator><creator>Yoon, Jonghun</creator><creator>You, Bong Sun</creator><general>Springer US</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>4T-</scope><scope>4U-</scope><scope>7SR</scope><scope>7XB</scope><scope>88I</scope><scope>8AF</scope><scope>8AO</scope><scope>8BQ</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>8G5</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KB.</scope><scope>L6V</scope><scope>M2O</scope><scope>M2P</scope><scope>M7S</scope><scope>MBDVC</scope><scope>PDBOC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>Q9U</scope><scope>S0X</scope></search><sort><creationdate>20151201</creationdate><title>Effect of Initial Grain Size on Microstructure and Mechanical Properties of Extruded Mg-9Al-0.6Zn Alloy</title><author>Park, Sung Hyuk ; Bae, Jun Ho ; Kim, Sang-Hoon ; Yoon, Jonghun ; You, Bong Sun</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c452t-4cb1f86a66e1172a75beda355cc0a594091f97896d526c1221d9d3b2479793c33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Alloys</topic><topic>Characterization and Evaluation of Materials</topic><topic>Chemistry and Materials Science</topic><topic>Communication</topic><topic>Cracks</topic><topic>Grain size</topic><topic>Magnesium</topic><topic>Materials Science</topic><topic>Mechanical properties</topic><topic>Metallic Materials</topic><topic>Microstructure</topic><topic>Nanotechnology</topic><topic>Structural Materials</topic><topic>Surfaces and Interfaces</topic><topic>Tensile strength</topic><topic>Thin Films</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Park, Sung Hyuk</creatorcontrib><creatorcontrib>Bae, Jun Ho</creatorcontrib><creatorcontrib>Kim, Sang-Hoon</creatorcontrib><creatorcontrib>Yoon, Jonghun</creatorcontrib><creatorcontrib>You, Bong Sun</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Docstoc</collection><collection>University Readers</collection><collection>Engineered Materials Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>STEM Database</collection><collection>ProQuest Pharma Collection</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Research Library (Alumni Edition)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>ProQuest Central Student</collection><collection>Research Library Prep</collection><collection>SciTech Premium Collection</collection><collection>Materials Research Database</collection><collection>Materials Science Database</collection><collection>ProQuest Engineering Collection</collection><collection>Research Library</collection><collection>Science Database</collection><collection>Engineering Database</collection><collection>Research Library (Corporate)</collection><collection>Materials Science Collection</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Engineering Collection</collection><collection>ProQuest Central Basic</collection><collection>SIRS Editorial</collection><jtitle>Metallurgical and materials transactions. A, Physical metallurgy and materials science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Park, Sung Hyuk</au><au>Bae, Jun Ho</au><au>Kim, Sang-Hoon</au><au>Yoon, Jonghun</au><au>You, Bong Sun</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of Initial Grain Size on Microstructure and Mechanical Properties of Extruded Mg-9Al-0.6Zn Alloy</atitle><jtitle>Metallurgical and materials transactions. A, Physical metallurgy and materials science</jtitle><stitle>Metall Mater Trans A</stitle><date>2015-12-01</date><risdate>2015</risdate><volume>46</volume><issue>12</issue><spage>5482</spage><epage>5488</epage><pages>5482-5488</pages><issn>1073-5623</issn><eissn>1543-1940</eissn><coden>MMTAEB</coden><abstract>The effect of initial grain size on the microstructural evolution and tensile properties of an extruded Mg-9Al-0.6Zn alloy was investigated using homogenized billets with grain sizes of 411 and 87
μ
m. It is found that although dynamically recrystallized (DRXed) grains remain the same size regardless of the initial grain size, a finer-grained billet results in a significant reduction of the size and area fraction of un-DRXed grains through an increase in grain boundaries capable of acting as nucleation sites for DRX during hot extrusion. This increase in the fraction of DRXed grains, combined with more precipitates, improves the tensile yield strength of the extruded alloy. The elongation is also significantly improved, as the reduction in unDRXed grains suppresses the formation of twins that cause micro-cracks. This increased ductility subsequently results in an increase in ultimate tensile strength through continuous strain hardening.</abstract><cop>New York</cop><pub>Springer US</pub><doi>10.1007/s11661-015-3164-1</doi><tpages>7</tpages></addata></record> |
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| subjects | Alloys Characterization and Evaluation of Materials Chemistry and Materials Science Communication Cracks Grain size Magnesium Materials Science Mechanical properties Metallic Materials Microstructure Nanotechnology Structural Materials Surfaces and Interfaces Tensile strength Thin Films |
| title | Effect of Initial Grain Size on Microstructure and Mechanical Properties of Extruded Mg-9Al-0.6Zn Alloy |
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