Dislocation binding as an origin for the improvement of room temperature ductility in Mg alloys
Improving room temperature ductility and formability is a bottleneck for a wide industrial application of Mg alloys, but even the mechanism for the effect of alloying elements on the deformation behavior of Mg is not clearly known. Here, using a molecular dynamics simulation, we clarify the role of...
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| Veröffentlicht in: | Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2018-02, Vol.715, p.266-275 |
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| container_title | Materials science & engineering. A, Structural materials : properties, microstructure and processing |
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| creator | Kim, Ki-Hyun Hwang, Ji Hyun Jang, Hyo-Sun Jeon, Jong Bae Kim, Nack Joon Lee, Byeong-Joo |
| description | Improving room temperature ductility and formability is a bottleneck for a wide industrial application of Mg alloys, but even the mechanism for the effect of alloying elements on the deformation behavior of Mg is not clearly known. Here, using a molecular dynamics simulation, we clarify the role of alloying elements in improving the room temperature ductility of Mg alloys: Solute atoms have stronger dislocation binding tendency and solid solution strengthening effect on basal slip planes than on non-basal slip planes, reduce the anisotropy in the critical resolved shear stress between slip systems, and eventually improves the room temperature ductility. We predict that any solute elements with a size difference from Mg can improve the room temperature ductility, once the alloying amount is carefully controlled. By proving the validity of the prediction experimentally, we provide a new guide for designing Mg alloys with improved room temperature ductility and formability. |
| doi_str_mv | 10.1016/j.msea.2018.01.010 |
| format | Article |
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A, Structural materials : properties, microstructure and processing</title><description>Improving room temperature ductility and formability is a bottleneck for a wide industrial application of Mg alloys, but even the mechanism for the effect of alloying elements on the deformation behavior of Mg is not clearly known. Here, using a molecular dynamics simulation, we clarify the role of alloying elements in improving the room temperature ductility of Mg alloys: Solute atoms have stronger dislocation binding tendency and solid solution strengthening effect on basal slip planes than on non-basal <c+a> slip planes, reduce the anisotropy in the critical resolved shear stress between slip systems, and eventually improves the room temperature ductility. We predict that any solute elements with a size difference from Mg can improve the room temperature ductility, once the alloying amount is carefully controlled. By proving the validity of the prediction experimentally, we provide a new guide for designing Mg alloys with improved room temperature ductility and formability.</description><subject>Alloying effects</subject><subject>Alloying elements</subject><subject>Alloys</subject><subject>Atomistic simulation</subject><subject>Binding</subject><subject>Critical resolved shear stress</subject><subject>Deformation effects</subject><subject>Deformation mechanisms</subject><subject>Dislocations</subject><subject>Ductility</subject><subject>Formability</subject><subject>Industrial applications</subject><subject>Magnesium</subject><subject>Magnesium alloy</subject><subject>Magnesium base alloys</subject><subject>Molecular chains</subject><subject>Molecular dynamics</subject><subject>Planes</subject><subject>Room temperature</subject><subject>Shear stress</subject><subject>Slip</subject><subject>Slip planes</subject><subject>Solid solutions</subject><subject>Solution strengthening</subject><subject>TEM</subject><issn>0921-5093</issn><issn>1873-4936</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNp9kEtLAzEUhYMoWB9_wFXA9dSbR-cBbqQ-oeJG1yFN7tQMM5OaZAr996bUtXDgbs537uEQcsNgzoCVd918iKjnHFg9B5YFJ2TG6koUshHlKZlBw1mxgEack4sYOwBgEhYzoh5d7L3RyfmRrt1o3bihOlI9Uh_cxo209YGmb6Ru2Aa_wwHHRH1Lg_cDTThsMeg0BaR2Msn1Lu1pht5zSN_7fbwiZ63uI17_3Uvy9fz0uXwtVh8vb8uHVWFEI1PRWGTQIkMBYCrg67qVorZC16IVtjZ1BZUWgjO-KNdStBZxzdBKDpXlwKW4JLfH3FzyZ8KYVOenMOaXioOUZSkbWWYXP7pM8DEGbNU2uEGHvWKgDkOqTh2GVIchFbAsyND9EcLcf-cwqGgcjgatC2iSst79h_8CGtJ8hg</recordid><startdate>20180207</startdate><enddate>20180207</enddate><creator>Kim, Ki-Hyun</creator><creator>Hwang, Ji Hyun</creator><creator>Jang, Hyo-Sun</creator><creator>Jeon, Jong Bae</creator><creator>Kim, Nack Joon</creator><creator>Lee, Byeong-Joo</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>20180207</creationdate><title>Dislocation binding as an origin for the improvement of room temperature ductility in Mg alloys</title><author>Kim, Ki-Hyun ; Hwang, Ji Hyun ; Jang, Hyo-Sun ; Jeon, Jong Bae ; Kim, Nack Joon ; Lee, Byeong-Joo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c394t-9de10fe1e300c702b8f438d3a83f3d8c8707a3321256b43fdeeb1ed4207d20243</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Alloying effects</topic><topic>Alloying elements</topic><topic>Alloys</topic><topic>Atomistic simulation</topic><topic>Binding</topic><topic>Critical resolved shear stress</topic><topic>Deformation effects</topic><topic>Deformation mechanisms</topic><topic>Dislocations</topic><topic>Ductility</topic><topic>Formability</topic><topic>Industrial applications</topic><topic>Magnesium</topic><topic>Magnesium alloy</topic><topic>Magnesium base alloys</topic><topic>Molecular chains</topic><topic>Molecular dynamics</topic><topic>Planes</topic><topic>Room temperature</topic><topic>Shear stress</topic><topic>Slip</topic><topic>Slip planes</topic><topic>Solid solutions</topic><topic>Solution strengthening</topic><topic>TEM</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kim, Ki-Hyun</creatorcontrib><creatorcontrib>Hwang, Ji Hyun</creatorcontrib><creatorcontrib>Jang, Hyo-Sun</creatorcontrib><creatorcontrib>Jeon, Jong Bae</creatorcontrib><creatorcontrib>Kim, Nack Joon</creatorcontrib><creatorcontrib>Lee, Byeong-Joo</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>Kim, Ki-Hyun</au><au>Hwang, Ji Hyun</au><au>Jang, Hyo-Sun</au><au>Jeon, Jong Bae</au><au>Kim, Nack Joon</au><au>Lee, Byeong-Joo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Dislocation binding as an origin for the improvement of room temperature ductility in Mg alloys</atitle><jtitle>Materials science & engineering. A, Structural materials : properties, microstructure and processing</jtitle><date>2018-02-07</date><risdate>2018</risdate><volume>715</volume><spage>266</spage><epage>275</epage><pages>266-275</pages><issn>0921-5093</issn><eissn>1873-4936</eissn><abstract>Improving room temperature ductility and formability is a bottleneck for a wide industrial application of Mg alloys, but even the mechanism for the effect of alloying elements on the deformation behavior of Mg is not clearly known. Here, using a molecular dynamics simulation, we clarify the role of alloying elements in improving the room temperature ductility of Mg alloys: Solute atoms have stronger dislocation binding tendency and solid solution strengthening effect on basal slip planes than on non-basal <c+a> slip planes, reduce the anisotropy in the critical resolved shear stress between slip systems, and eventually improves the room temperature ductility. We predict that any solute elements with a size difference from Mg can improve the room temperature ductility, once the alloying amount is carefully controlled. By proving the validity of the prediction experimentally, we provide a new guide for designing Mg alloys with improved room temperature ductility and formability.</abstract><cop>Lausanne</cop><pub>Elsevier B.V</pub><doi>10.1016/j.msea.2018.01.010</doi><tpages>10</tpages></addata></record> |
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| identifier | ISSN: 0921-5093 |
| ispartof | Materials science & engineering. A, Structural materials : properties, microstructure and processing, 2018-02, Vol.715, p.266-275 |
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| language | eng |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Alloying effects Alloying elements Alloys Atomistic simulation Binding Critical resolved shear stress Deformation effects Deformation mechanisms Dislocations Ductility Formability Industrial applications Magnesium Magnesium alloy Magnesium base alloys Molecular chains Molecular dynamics Planes Room temperature Shear stress Slip Slip planes Solid solutions Solution strengthening TEM |
| title | Dislocation binding as an origin for the improvement of room temperature ductility in Mg alloys |
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