Numerical study of aluminum segregation during electron beam cold hearth melting for large-scale Ti-6 wt%Al-4 wt%V alloy slab ingots
•A multiphysics model was established for EBCHM of large scale TC4 slab ingots.•Al segregation degree of slab ingots is slightly affected by the casting speed.•A promising method for Al segregation control is decreasing pouring temperature. To investigate aluminum (Al) segregation in large-scale Ti-...
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| Veröffentlicht in: | International journal of heat and mass transfer 2020-02, Vol.147, p.118976, Article 118976 |
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| creator | Gao, Lei Huang, Hai-guang Kratzsch, Christoph Zhang, Hong-ming Chattopadhyay, Kinnor Jiang, Ye-hua Zhou, Rong |
| description | •A multiphysics model was established for EBCHM of large scale TC4 slab ingots.•Al segregation degree of slab ingots is slightly affected by the casting speed.•A promising method for Al segregation control is decreasing pouring temperature.
To investigate aluminum (Al) segregation in large-scale Ti-6 wt%Al-4 wt%V (TC4) slab ingots produced by electron beam cold hearth melting (EBCHM), a three-dimensional multiphysics model verified with experimental data in the literature has been established. The numerical predictions qualitatively revealed the macrosegregation tendency of Al in the molten and the solidified region at different casting conditions. It was noticed that Al segregation is slightly influenced by increasing casting speed due to the vertical evolution of the pool shape near the inlet. A promising solution for Al segregation control is to limit the Al evaporation loss by decreasing the pouring temperature. The results suggest that for EBCHM with a casting speed of 8 mm/min, as the pouring temperature decreases from 2273 to 2073 K, the segregation degree Фl increases from 0.70 to 0.96 in the pool. As a consequence, the corresponding segregation degree Фc on the solidified cross-section improves (increases from 0.67 to 0.93). |
| doi_str_mv | 10.1016/j.ijheatmasstransfer.2019.118976 |
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To investigate aluminum (Al) segregation in large-scale Ti-6 wt%Al-4 wt%V (TC4) slab ingots produced by electron beam cold hearth melting (EBCHM), a three-dimensional multiphysics model verified with experimental data in the literature has been established. The numerical predictions qualitatively revealed the macrosegregation tendency of Al in the molten and the solidified region at different casting conditions. It was noticed that Al segregation is slightly influenced by increasing casting speed due to the vertical evolution of the pool shape near the inlet. A promising solution for Al segregation control is to limit the Al evaporation loss by decreasing the pouring temperature. The results suggest that for EBCHM with a casting speed of 8 mm/min, as the pouring temperature decreases from 2273 to 2073 K, the segregation degree Фl increases from 0.70 to 0.96 in the pool. As a consequence, the corresponding segregation degree Фc on the solidified cross-section improves (increases from 0.67 to 0.93).</description><identifier>ISSN: 0017-9310</identifier><identifier>EISSN: 1879-2189</identifier><identifier>DOI: 10.1016/j.ijheatmasstransfer.2019.118976</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Aluminum ; Aluminum evaporation ; Casting ; Electron beam cold hearth melting ; Electron beams ; Ingot casting ; Ingots ; Macrosegregation control ; Pouring ; Three dimensional models ; Ti-6 wt%Al-4 wt%V slab ingots ; Titanium base alloys ; Vanadium</subject><ispartof>International journal of heat and mass transfer, 2020-02, Vol.147, p.118976, Article 118976</ispartof><rights>2019 Elsevier Ltd</rights><rights>Copyright Elsevier BV Feb 2020</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c370t-2f8ddea4fca5ff617e33ea494c457a55683b6c57784cdfa1f6f0f4ce4d95646f3</citedby><cites>FETCH-LOGICAL-c370t-2f8ddea4fca5ff617e33ea494c457a55683b6c57784cdfa1f6f0f4ce4d95646f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.ijheatmasstransfer.2019.118976$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Gao, Lei</creatorcontrib><creatorcontrib>Huang, Hai-guang</creatorcontrib><creatorcontrib>Kratzsch, Christoph</creatorcontrib><creatorcontrib>Zhang, Hong-ming</creatorcontrib><creatorcontrib>Chattopadhyay, Kinnor</creatorcontrib><creatorcontrib>Jiang, Ye-hua</creatorcontrib><creatorcontrib>Zhou, Rong</creatorcontrib><title>Numerical study of aluminum segregation during electron beam cold hearth melting for large-scale Ti-6 wt%Al-4 wt%V alloy slab ingots</title><title>International journal of heat and mass transfer</title><description>•A multiphysics model was established for EBCHM of large scale TC4 slab ingots.•Al segregation degree of slab ingots is slightly affected by the casting speed.•A promising method for Al segregation control is decreasing pouring temperature.
To investigate aluminum (Al) segregation in large-scale Ti-6 wt%Al-4 wt%V (TC4) slab ingots produced by electron beam cold hearth melting (EBCHM), a three-dimensional multiphysics model verified with experimental data in the literature has been established. The numerical predictions qualitatively revealed the macrosegregation tendency of Al in the molten and the solidified region at different casting conditions. It was noticed that Al segregation is slightly influenced by increasing casting speed due to the vertical evolution of the pool shape near the inlet. A promising solution for Al segregation control is to limit the Al evaporation loss by decreasing the pouring temperature. The results suggest that for EBCHM with a casting speed of 8 mm/min, as the pouring temperature decreases from 2273 to 2073 K, the segregation degree Фl increases from 0.70 to 0.96 in the pool. As a consequence, the corresponding segregation degree Фc on the solidified cross-section improves (increases from 0.67 to 0.93).</description><subject>Aluminum</subject><subject>Aluminum evaporation</subject><subject>Casting</subject><subject>Electron beam cold hearth melting</subject><subject>Electron beams</subject><subject>Ingot casting</subject><subject>Ingots</subject><subject>Macrosegregation control</subject><subject>Pouring</subject><subject>Three dimensional models</subject><subject>Ti-6 wt%Al-4 wt%V slab ingots</subject><subject>Titanium base alloys</subject><subject>Vanadium</subject><issn>0017-9310</issn><issn>1879-2189</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNqNkMFOHSEUhkmjSW_VdyBpmriZK8wwMLOrMVptTLuxbgkXDlcmzGCB0dxdl76N79QnkZvprhtX8Ief78CH0Ckla0ooPxvWbngAlUeVUo5qShbiuia0X1Pa9YJ_QCvaib6qSzpAK0KoqPqGko_oU0rDPhLGV-jlxzxCdFp5nPJsdjhYrPw8umkecYJthK3KLkzYzNFNWwwedI4lb0CNWAdvcHlFzA94BJ_3DRsi9ipuoUqFCvjOVfzvn9fn_OXcV2zZ3ZcZPuxw8mqDy6WQ0zE6tMonOPm3HqFfV5d3F9fV7c9vNxfnt5VuBMlVbTtjQDGrVWstpwKapsSeadYK1ba8azZct0J0TBurqOWWWKaBmb7ljNvmCH1euI8x_J4hZTmEOU5lpKybtm54LQQvra9LS8eQUgQrH6MbVdxJSuTevxzk__7l3r9c_BfE9wUB5TdPrpwm7WDSYFwsDqUJ7v2wNztNn9o</recordid><startdate>202002</startdate><enddate>202002</enddate><creator>Gao, Lei</creator><creator>Huang, Hai-guang</creator><creator>Kratzsch, Christoph</creator><creator>Zhang, Hong-ming</creator><creator>Chattopadhyay, Kinnor</creator><creator>Jiang, Ye-hua</creator><creator>Zhou, Rong</creator><general>Elsevier Ltd</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>KR7</scope><scope>L7M</scope></search><sort><creationdate>202002</creationdate><title>Numerical study of aluminum segregation during electron beam cold hearth melting for large-scale Ti-6 wt%Al-4 wt%V alloy slab ingots</title><author>Gao, Lei ; Huang, Hai-guang ; Kratzsch, Christoph ; Zhang, Hong-ming ; Chattopadhyay, Kinnor ; Jiang, Ye-hua ; Zhou, Rong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c370t-2f8ddea4fca5ff617e33ea494c457a55683b6c57784cdfa1f6f0f4ce4d95646f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Aluminum</topic><topic>Aluminum evaporation</topic><topic>Casting</topic><topic>Electron beam cold hearth melting</topic><topic>Electron beams</topic><topic>Ingot casting</topic><topic>Ingots</topic><topic>Macrosegregation control</topic><topic>Pouring</topic><topic>Three dimensional models</topic><topic>Ti-6 wt%Al-4 wt%V slab ingots</topic><topic>Titanium base alloys</topic><topic>Vanadium</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Gao, Lei</creatorcontrib><creatorcontrib>Huang, Hai-guang</creatorcontrib><creatorcontrib>Kratzsch, Christoph</creatorcontrib><creatorcontrib>Zhang, Hong-ming</creatorcontrib><creatorcontrib>Chattopadhyay, Kinnor</creatorcontrib><creatorcontrib>Jiang, Ye-hua</creatorcontrib><creatorcontrib>Zhou, Rong</creatorcontrib><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>International journal of heat and mass transfer</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Gao, Lei</au><au>Huang, Hai-guang</au><au>Kratzsch, Christoph</au><au>Zhang, Hong-ming</au><au>Chattopadhyay, Kinnor</au><au>Jiang, Ye-hua</au><au>Zhou, Rong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Numerical study of aluminum segregation during electron beam cold hearth melting for large-scale Ti-6 wt%Al-4 wt%V alloy slab ingots</atitle><jtitle>International journal of heat and mass transfer</jtitle><date>2020-02</date><risdate>2020</risdate><volume>147</volume><spage>118976</spage><pages>118976-</pages><artnum>118976</artnum><issn>0017-9310</issn><eissn>1879-2189</eissn><abstract>•A multiphysics model was established for EBCHM of large scale TC4 slab ingots.•Al segregation degree of slab ingots is slightly affected by the casting speed.•A promising method for Al segregation control is decreasing pouring temperature.
To investigate aluminum (Al) segregation in large-scale Ti-6 wt%Al-4 wt%V (TC4) slab ingots produced by electron beam cold hearth melting (EBCHM), a three-dimensional multiphysics model verified with experimental data in the literature has been established. The numerical predictions qualitatively revealed the macrosegregation tendency of Al in the molten and the solidified region at different casting conditions. It was noticed that Al segregation is slightly influenced by increasing casting speed due to the vertical evolution of the pool shape near the inlet. A promising solution for Al segregation control is to limit the Al evaporation loss by decreasing the pouring temperature. The results suggest that for EBCHM with a casting speed of 8 mm/min, as the pouring temperature decreases from 2273 to 2073 K, the segregation degree Фl increases from 0.70 to 0.96 in the pool. As a consequence, the corresponding segregation degree Фc on the solidified cross-section improves (increases from 0.67 to 0.93).</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.ijheatmasstransfer.2019.118976</doi></addata></record> |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Aluminum Aluminum evaporation Casting Electron beam cold hearth melting Electron beams Ingot casting Ingots Macrosegregation control Pouring Three dimensional models Ti-6 wt%Al-4 wt%V slab ingots Titanium base alloys Vanadium |
| title | Numerical study of aluminum segregation during electron beam cold hearth melting for large-scale Ti-6 wt%Al-4 wt%V alloy slab ingots |
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