Understanding the Evolution of the Microstructure in Melt-Conditioned Direct-Chill Cast Al Alloys
Present work focuses on understanding the solidification mechanism responsible for the grain-refinement in melt-conditioned direct chill (MC-DC) cast Al-alloy. It has been found that the melt-conditioning performed by stirring the liquid above the solidification front using a rotor–stator type melt-...
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| Format: | Article |
| Language: | English |
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Taylor & Francis
2014
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| Online Access: | http://umpir.ump.edu.my/id/eprint/6249/1/fkp-2014-Prasada-Understanding_the_Evolution_abs_only.pdf |
| _version_ | 1825821745340219392 |
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| author | A. K., Prasada Rao |
| author_facet | A. K., Prasada Rao |
| author_sort | A. K., Prasada Rao |
| collection | UMP |
| description | Present work focuses on understanding the solidification mechanism responsible for the grain-refinement in melt-conditioned direct chill (MC-DC) cast Al-alloy. It has been found that the melt-conditioning performed by stirring the liquid above the solidification front using a rotor–stator type melt-conditioning device, results in substantial fragmentation of dendrites due to forced convection and thermo-solutal distribution across the billet sump. Results also indicate that an isothermal region is created in the MC-DC regime of the billet sump, which further enhances the nucleation and restricts growth of the α-Al phase. The forced convection together with the solute transport lead to catastrophic dendrite fragmentation. |
| first_indexed | 2024-03-06T11:46:10Z |
| format | Article |
| id | UMPir6249 |
| institution | Universiti Malaysia Pahang |
| language | English |
| last_indexed | 2024-03-06T11:46:10Z |
| publishDate | 2014 |
| publisher | Taylor & Francis |
| record_format | dspace |
| spelling | UMPir62492018-03-12T02:24:16Z http://umpir.ump.edu.my/id/eprint/6249/ Understanding the Evolution of the Microstructure in Melt-Conditioned Direct-Chill Cast Al Alloys A. K., Prasada Rao TJ Mechanical engineering and machinery TN Mining engineering. Metallurgy QC Physics Present work focuses on understanding the solidification mechanism responsible for the grain-refinement in melt-conditioned direct chill (MC-DC) cast Al-alloy. It has been found that the melt-conditioning performed by stirring the liquid above the solidification front using a rotor–stator type melt-conditioning device, results in substantial fragmentation of dendrites due to forced convection and thermo-solutal distribution across the billet sump. Results also indicate that an isothermal region is created in the MC-DC regime of the billet sump, which further enhances the nucleation and restricts growth of the α-Al phase. The forced convection together with the solute transport lead to catastrophic dendrite fragmentation. Taylor & Francis 2014-07-07 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/6249/1/fkp-2014-Prasada-Understanding_the_Evolution_abs_only.pdf A. K., Prasada Rao (2014) Understanding the Evolution of the Microstructure in Melt-Conditioned Direct-Chill Cast Al Alloys. Materials and Manufacturing Processes, 29 (7). pp. 848-852. ISSN 1042-6914. (Published) http://dx.doi.org/10.1080/10426914.2014.921698 DOI: 10.1080/10426914.2014.921698 |
| spellingShingle | TJ Mechanical engineering and machinery TN Mining engineering. Metallurgy QC Physics A. K., Prasada Rao Understanding the Evolution of the Microstructure in Melt-Conditioned Direct-Chill Cast Al Alloys |
| title | Understanding the Evolution of the Microstructure in Melt-Conditioned Direct-Chill Cast Al Alloys |
| title_full | Understanding the Evolution of the Microstructure in Melt-Conditioned Direct-Chill Cast Al Alloys |
| title_fullStr | Understanding the Evolution of the Microstructure in Melt-Conditioned Direct-Chill Cast Al Alloys |
| title_full_unstemmed | Understanding the Evolution of the Microstructure in Melt-Conditioned Direct-Chill Cast Al Alloys |
| title_short | Understanding the Evolution of the Microstructure in Melt-Conditioned Direct-Chill Cast Al Alloys |
| title_sort | understanding the evolution of the microstructure in melt conditioned direct chill cast al alloys |
| topic | TJ Mechanical engineering and machinery TN Mining engineering. Metallurgy QC Physics |
| url | http://umpir.ump.edu.my/id/eprint/6249/1/fkp-2014-Prasada-Understanding_the_Evolution_abs_only.pdf |
| work_keys_str_mv | AT akprasadarao understandingtheevolutionofthemicrostructureinmeltconditioneddirectchillcastalalloys |