Joint Effect of Ultrasonic Vibrations and Solid Metal Addition on the Grain Refinement of an Aluminium Alloy
It is well known that it takes some time for the solid phase to completely dissolve upon melting, especially inside the defects of insoluble particles, e.g. oxides. Until then the oxides remain active solidification substrates in the case of subsequent solidification. It is also known that ultrasoni...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-02-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/9/2/161 |
| _version_ | 1818248610455748608 |
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| author | Dmitry Eskin Feng Wang |
| author_facet | Dmitry Eskin Feng Wang |
| author_sort | Dmitry Eskin |
| collection | DOAJ |
| description | It is well known that it takes some time for the solid phase to completely dissolve upon melting, especially inside the defects of insoluble particles, e.g. oxides. Until then the oxides remain active solidification substrates in the case of subsequent solidification. It is also known that ultrasonic melt treatment causes grain refinement through activation and dispersion of solidification substrates (one of the mechanisms) and also accelerates the dissolution of solid metal in the melt. In this study we combine these effects and demonstrate that the introduction of an alloy rod into the matrix melt of the same composition results in significant grain refinement, this effect is increased by the ultrasonic vibration of the rod. The achieved grain size is comparable to that obtained by a standard Al⁻Ti⁻B grain refiner. All samples were cast using a standard TP-1 mould to enable correct comparison. The effects of the temperature range of the rod introduction as well as the application of ultrasonic vibrations are discussed. |
| first_indexed | 2024-12-12T15:23:20Z |
| format | Article |
| id | doaj.art-a138118e87bf4213966be9ae0b382194 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-12T15:23:20Z |
| publishDate | 2019-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-a138118e87bf4213966be9ae0b3821942022-12-22T00:20:20ZengMDPI AGMetals2075-47012019-02-019216110.3390/met9020161met9020161Joint Effect of Ultrasonic Vibrations and Solid Metal Addition on the Grain Refinement of an Aluminium AlloyDmitry Eskin0Feng Wang1BCAST, Brunel University London, Uxbridge UB8 3PH, UKBCAST, Brunel University London, Uxbridge UB8 3PH, UKIt is well known that it takes some time for the solid phase to completely dissolve upon melting, especially inside the defects of insoluble particles, e.g. oxides. Until then the oxides remain active solidification substrates in the case of subsequent solidification. It is also known that ultrasonic melt treatment causes grain refinement through activation and dispersion of solidification substrates (one of the mechanisms) and also accelerates the dissolution of solid metal in the melt. In this study we combine these effects and demonstrate that the introduction of an alloy rod into the matrix melt of the same composition results in significant grain refinement, this effect is increased by the ultrasonic vibration of the rod. The achieved grain size is comparable to that obtained by a standard Al⁻Ti⁻B grain refiner. All samples were cast using a standard TP-1 mould to enable correct comparison. The effects of the temperature range of the rod introduction as well as the application of ultrasonic vibrations are discussed.https://www.mdpi.com/2075-4701/9/2/161aluminium alloygrain refinementultrasonic processingsolidificationnucleationdissolution |
| spellingShingle | Dmitry Eskin Feng Wang Joint Effect of Ultrasonic Vibrations and Solid Metal Addition on the Grain Refinement of an Aluminium Alloy Metals aluminium alloy grain refinement ultrasonic processing solidification nucleation dissolution |
| title | Joint Effect of Ultrasonic Vibrations and Solid Metal Addition on the Grain Refinement of an Aluminium Alloy |
| title_full | Joint Effect of Ultrasonic Vibrations and Solid Metal Addition on the Grain Refinement of an Aluminium Alloy |
| title_fullStr | Joint Effect of Ultrasonic Vibrations and Solid Metal Addition on the Grain Refinement of an Aluminium Alloy |
| title_full_unstemmed | Joint Effect of Ultrasonic Vibrations and Solid Metal Addition on the Grain Refinement of an Aluminium Alloy |
| title_short | Joint Effect of Ultrasonic Vibrations and Solid Metal Addition on the Grain Refinement of an Aluminium Alloy |
| title_sort | joint effect of ultrasonic vibrations and solid metal addition on the grain refinement of an aluminium alloy |
| topic | aluminium alloy grain refinement ultrasonic processing solidification nucleation dissolution |
| url | https://www.mdpi.com/2075-4701/9/2/161 |
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