Face-centered-cubic titanium - A new crystal structure of Ti in a Ti-8Mo-6Fe alloy
The microstructure of a Ti-8Mo-6Fe ternary alloy with ultrafine grains was systematically studied with Tecnai-G2 F20 field transmission electron microscope and JEMS 2010 transmission electron microscope. A new Ti phase with face-centered-cubic (Fm-3m) structure was discovered. The morphology of thes...
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| Veröffentlicht in: | Journal of alloys and compounds 2018-06, Vol.748, p.943-952 |
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| creator | Han, G. Lu, X. Xia, Q. Lei, B. Yan, Y. Shang, C.J. |
| description | The microstructure of a Ti-8Mo-6Fe ternary alloy with ultrafine grains was systematically studied with Tecnai-G2 F20 field transmission electron microscope and JEMS 2010 transmission electron microscope. A new Ti phase with face-centered-cubic (Fm-3m) structure was discovered. The morphology of these FCC Ti phases was elliptical, and they were widely distributed at interfaces between the polygonal BCC TiMoFe phases. The size of the FCC Ti phases was concentrated in the range of 200–450 nm. The lattice constant of FCC Ti phase was 0.431 nm. Simulated high-resolution images of FCC Ti and compounds of FCC TiC, TiN and TiO with different thicknesses and different defocus amounts were carried out to prove that the FCC structure in Ti-8Mo-6Fe alloy was indeed FCC Ti but not FCC TiC, TiN and TiO. First principle calculations revealed the metallic properties and stability of FCC Ti. All alloy elements of Mo and Fe were in the polygonal BCC TiMoFe phases. The semicircular arc periodic strips formed by electron diffuse scattering were present on the selected area electron diffraction (SAED) patterns of the BCC TiMoFe phase, which may come from the ordered domain of Mo and Fe or local ordering by Mo, Fe and Ti.
•The microstructure of a Ti-8Mo-6Fe alloy prepared by powder sintering technology is ultrafine.•FCC (Fm-3m) Ti phase with a lattice constant of 0.431 nm was discovered.•The metallic properties and stability of FCC Ti were revealed by the first principle calculations.•Arc periodic strips formed by electron diffuse scattering were discovered on the SAED patterns of BCC TiMoFe phase. |
| doi_str_mv | 10.1016/j.jallcom.2018.03.218 |
| format | Article |
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•The microstructure of a Ti-8Mo-6Fe alloy prepared by powder sintering technology is ultrafine.•FCC (Fm-3m) Ti phase with a lattice constant of 0.431 nm was discovered.•The metallic properties and stability of FCC Ti were revealed by the first principle calculations.•Arc periodic strips formed by electron diffuse scattering were discovered on the SAED patterns of BCC TiMoFe phase.</description><identifier>ISSN: 0925-8388</identifier><identifier>EISSN: 1873-4669</identifier><identifier>DOI: 10.1016/j.jallcom.2018.03.218</identifier><language>eng</language><publisher>Lausanne: Elsevier B.V</publisher><subject>Alloying elements ; Body centered cubic lattice ; Computer simulation ; Crystal structure ; Diffraction ; Diffraction patterns ; Diffusion ; Electron diffraction ; Electron diffuse scattering ; Electrons ; Face centered cubic lattice ; Face-centered-cubic ; First principles ; Image resolution ; Iron ; Lattice parameters ; Microstructure ; Molybdenum ; Morphology ; Phases ; Selected area electron diffraction ; Ternary alloys ; Ti-8Mo-6Fe alloy ; Titanium alloys ; Titanium base alloys ; Titanium carbide</subject><ispartof>Journal of alloys and compounds, 2018-06, Vol.748, p.943-952</ispartof><rights>2018 Elsevier B.V.</rights><rights>Copyright Elsevier BV Jun 5, 2018</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c403t-da18ee9c98ae3534419b6b00efd3e3b751cc99e6482bcc74ca487295b55874ae3</citedby><cites>FETCH-LOGICAL-c403t-da18ee9c98ae3534419b6b00efd3e3b751cc99e6482bcc74ca487295b55874ae3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0925838818310880$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3536,27903,27904,65309</link.rule.ids></links><search><creatorcontrib>Han, G.</creatorcontrib><creatorcontrib>Lu, X.</creatorcontrib><creatorcontrib>Xia, Q.</creatorcontrib><creatorcontrib>Lei, B.</creatorcontrib><creatorcontrib>Yan, Y.</creatorcontrib><creatorcontrib>Shang, C.J.</creatorcontrib><title>Face-centered-cubic titanium - A new crystal structure of Ti in a Ti-8Mo-6Fe alloy</title><title>Journal of alloys and compounds</title><description>The microstructure of a Ti-8Mo-6Fe ternary alloy with ultrafine grains was systematically studied with Tecnai-G2 F20 field transmission electron microscope and JEMS 2010 transmission electron microscope. A new Ti phase with face-centered-cubic (Fm-3m) structure was discovered. The morphology of these FCC Ti phases was elliptical, and they were widely distributed at interfaces between the polygonal BCC TiMoFe phases. The size of the FCC Ti phases was concentrated in the range of 200–450 nm. The lattice constant of FCC Ti phase was 0.431 nm. Simulated high-resolution images of FCC Ti and compounds of FCC TiC, TiN and TiO with different thicknesses and different defocus amounts were carried out to prove that the FCC structure in Ti-8Mo-6Fe alloy was indeed FCC Ti but not FCC TiC, TiN and TiO. First principle calculations revealed the metallic properties and stability of FCC Ti. All alloy elements of Mo and Fe were in the polygonal BCC TiMoFe phases. The semicircular arc periodic strips formed by electron diffuse scattering were present on the selected area electron diffraction (SAED) patterns of the BCC TiMoFe phase, which may come from the ordered domain of Mo and Fe or local ordering by Mo, Fe and Ti.
•The microstructure of a Ti-8Mo-6Fe alloy prepared by powder sintering technology is ultrafine.•FCC (Fm-3m) Ti phase with a lattice constant of 0.431 nm was discovered.•The metallic properties and stability of FCC Ti were revealed by the first principle calculations.•Arc periodic strips formed by electron diffuse scattering were discovered on the SAED patterns of BCC TiMoFe phase.</description><subject>Alloying elements</subject><subject>Body centered cubic lattice</subject><subject>Computer simulation</subject><subject>Crystal structure</subject><subject>Diffraction</subject><subject>Diffraction patterns</subject><subject>Diffusion</subject><subject>Electron diffraction</subject><subject>Electron diffuse scattering</subject><subject>Electrons</subject><subject>Face centered cubic lattice</subject><subject>Face-centered-cubic</subject><subject>First principles</subject><subject>Image resolution</subject><subject>Iron</subject><subject>Lattice parameters</subject><subject>Microstructure</subject><subject>Molybdenum</subject><subject>Morphology</subject><subject>Phases</subject><subject>Selected area electron diffraction</subject><subject>Ternary alloys</subject><subject>Ti-8Mo-6Fe alloy</subject><subject>Titanium alloys</subject><subject>Titanium base alloys</subject><subject>Titanium carbide</subject><issn>0925-8388</issn><issn>1873-4669</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNqFkF1LwzAUhoMoOKc_QQh4nZo0aZtcyRhOhYkg8zqkp6eQsrUzSZX9ezu2e6_em_fjnIeQe8EzwUX52GWd225h2GU5FzrjMsuFviAzoSvJVFmaSzLjJi-Yllpfk5sYO865MFLMyOfKATLAPmHAhsFYe6DJJ9f7cUcZXdAefymEQ0xuS2MKI6QxIB1auvHU99RNyvT7wMoV0umM4XBLrlq3jXh31jn5Wj1vlq9s_fHytlysGSguE2uc0IgGjHYoC6mUMHVZc45tI1HWVSEAjMFS6bwGqBQ4pavcFHVR6EpNmTl5OPXuw_A9Yky2G8bQT5M256VWuhTKTK7i5IIwxBiwtfvgdy4crOD2iM929ozPHvFZLu2Eb8o9nXI4vfDjMdgIHnvAxgeEZJvB_9PwB7Raecc</recordid><startdate>20180605</startdate><enddate>20180605</enddate><creator>Han, G.</creator><creator>Lu, X.</creator><creator>Xia, Q.</creator><creator>Lei, B.</creator><creator>Yan, Y.</creator><creator>Shang, C.J.</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20180605</creationdate><title>Face-centered-cubic titanium - A new crystal structure of Ti in a Ti-8Mo-6Fe alloy</title><author>Han, G. ; Lu, X. ; Xia, Q. ; Lei, B. ; Yan, Y. ; Shang, C.J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c403t-da18ee9c98ae3534419b6b00efd3e3b751cc99e6482bcc74ca487295b55874ae3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Alloying elements</topic><topic>Body centered cubic lattice</topic><topic>Computer simulation</topic><topic>Crystal structure</topic><topic>Diffraction</topic><topic>Diffraction patterns</topic><topic>Diffusion</topic><topic>Electron diffraction</topic><topic>Electron diffuse scattering</topic><topic>Electrons</topic><topic>Face centered cubic lattice</topic><topic>Face-centered-cubic</topic><topic>First principles</topic><topic>Image resolution</topic><topic>Iron</topic><topic>Lattice parameters</topic><topic>Microstructure</topic><topic>Molybdenum</topic><topic>Morphology</topic><topic>Phases</topic><topic>Selected area electron diffraction</topic><topic>Ternary alloys</topic><topic>Ti-8Mo-6Fe alloy</topic><topic>Titanium alloys</topic><topic>Titanium base alloys</topic><topic>Titanium carbide</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Han, G.</creatorcontrib><creatorcontrib>Lu, X.</creatorcontrib><creatorcontrib>Xia, Q.</creatorcontrib><creatorcontrib>Lei, B.</creatorcontrib><creatorcontrib>Yan, Y.</creatorcontrib><creatorcontrib>Shang, C.J.</creatorcontrib><collection>CrossRef</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of alloys and compounds</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Han, G.</au><au>Lu, X.</au><au>Xia, Q.</au><au>Lei, B.</au><au>Yan, Y.</au><au>Shang, C.J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Face-centered-cubic titanium - A new crystal structure of Ti in a Ti-8Mo-6Fe alloy</atitle><jtitle>Journal of alloys and compounds</jtitle><date>2018-06-05</date><risdate>2018</risdate><volume>748</volume><spage>943</spage><epage>952</epage><pages>943-952</pages><issn>0925-8388</issn><eissn>1873-4669</eissn><abstract>The microstructure of a Ti-8Mo-6Fe ternary alloy with ultrafine grains was systematically studied with Tecnai-G2 F20 field transmission electron microscope and JEMS 2010 transmission electron microscope. A new Ti phase with face-centered-cubic (Fm-3m) structure was discovered. The morphology of these FCC Ti phases was elliptical, and they were widely distributed at interfaces between the polygonal BCC TiMoFe phases. The size of the FCC Ti phases was concentrated in the range of 200–450 nm. The lattice constant of FCC Ti phase was 0.431 nm. Simulated high-resolution images of FCC Ti and compounds of FCC TiC, TiN and TiO with different thicknesses and different defocus amounts were carried out to prove that the FCC structure in Ti-8Mo-6Fe alloy was indeed FCC Ti but not FCC TiC, TiN and TiO. First principle calculations revealed the metallic properties and stability of FCC Ti. All alloy elements of Mo and Fe were in the polygonal BCC TiMoFe phases. The semicircular arc periodic strips formed by electron diffuse scattering were present on the selected area electron diffraction (SAED) patterns of the BCC TiMoFe phase, which may come from the ordered domain of Mo and Fe or local ordering by Mo, Fe and Ti.
•The microstructure of a Ti-8Mo-6Fe alloy prepared by powder sintering technology is ultrafine.•FCC (Fm-3m) Ti phase with a lattice constant of 0.431 nm was discovered.•The metallic properties and stability of FCC Ti were revealed by the first principle calculations.•Arc periodic strips formed by electron diffuse scattering were discovered on the SAED patterns of BCC TiMoFe phase.</abstract><cop>Lausanne</cop><pub>Elsevier B.V</pub><doi>10.1016/j.jallcom.2018.03.218</doi><tpages>10</tpages></addata></record> |
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| subjects | Alloying elements Body centered cubic lattice Computer simulation Crystal structure Diffraction Diffraction patterns Diffusion Electron diffraction Electron diffuse scattering Electrons Face centered cubic lattice Face-centered-cubic First principles Image resolution Iron Lattice parameters Microstructure Molybdenum Morphology Phases Selected area electron diffraction Ternary alloys Ti-8Mo-6Fe alloy Titanium alloys Titanium base alloys Titanium carbide |
| title | Face-centered-cubic titanium - A new crystal structure of Ti in a Ti-8Mo-6Fe alloy |
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