Effect of Ti-B Grain Refiners on Wear and Corrosion of the A332 Alloy with Sr Modification
Grain refiners play a critical role in changing characteristics and properties of casting aluminum alloys. The Al-Si alloy (A332) is one of the most popular hypoeutectic alloys with a large range of industrial applications. It has a varied phase and morphology; however, it features problems with aci...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-12-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/13/1/430 |
| _version_ | 1797626257347706880 |
|---|---|
| author | Bruno E. Arendarchuck Andre R. Mayer Willian R. de Oliveira Anderson G. M. Pukasiewicz Luciano A. Lourençato Hipolito D. C. Fals Eduardo Martínez-Cámara |
| author_facet | Bruno E. Arendarchuck Andre R. Mayer Willian R. de Oliveira Anderson G. M. Pukasiewicz Luciano A. Lourençato Hipolito D. C. Fals Eduardo Martínez-Cámara |
| author_sort | Bruno E. Arendarchuck |
| collection | DOAJ |
| description | Grain refiners play a critical role in changing characteristics and properties of casting aluminum alloys. The Al-Si alloy (A332) is one of the most popular hypoeutectic alloys with a large range of industrial applications. It has a varied phase and morphology; however, it features problems with acicular-shaped eutectic phase, and generally exhibits dendritic cast grain type. To change this situation, the Sr element acts as a modifier of eutectic, which, along with a grain refiner may increase mechanical properties. In this work, two different grain refiners (Al5Ti1B, Al5Ti2B) were applied to the A332 alloy modified with Sr, and analyzed in relation to grain size, hardness, corrosion resistance, and wear behavior. Corrosion tests in 3.5 wt.% NaCl solution, nanoindentations, and Heyn’s method to analyze grain size and microhardness as optical and SEM images were made to examine the changes caused by grain refiners. A reduction in grain size was achieved, and the influence in size and hardness of the β-Fe phase was verified in the wear and corrosion analyses. |
| first_indexed | 2024-03-11T10:07:48Z |
| format | Article |
| id | doaj.art-5a1c159412a8493a99f3c7f6b85c4330 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T10:07:48Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-5a1c159412a8493a99f3c7f6b85c43302023-11-16T14:56:55ZengMDPI AGApplied Sciences2076-34172022-12-0113143010.3390/app13010430Effect of Ti-B Grain Refiners on Wear and Corrosion of the A332 Alloy with Sr ModificationBruno E. Arendarchuck0Andre R. Mayer1Willian R. de Oliveira2Anderson G. M. Pukasiewicz3Luciano A. Lourençato4Hipolito D. C. Fals5Eduardo Martínez-Cámara6Department of Mechanical Engineering, Federal University of Technology—Paraná, Ponta Grossa 84017-220, BrazilDepartment of Mechanical, Industrial and Aerospace Engineering, Concordia University Montreal, Montreal, QC H3G 1M8, CanadaDepartment of Mechanical Engineering, Federal University of Technology—Paraná, Ponta Grossa 84017-220, BrazilDepartment of Mechanical Engineering, Federal University of Technology—Paraná, Ponta Grossa 84017-220, BrazilDepartment of Mechanical Engineering, Federal University of Technology—Paraná, Ponta Grossa 84017-220, BrazilDepartment of Mechanical Engineering, Federal University of Technology—Paraná, Ponta Grossa 84017-220, BrazilDepartment of Mechanical Engineering, University of La Rioja, 26004 Logroño, SpainGrain refiners play a critical role in changing characteristics and properties of casting aluminum alloys. The Al-Si alloy (A332) is one of the most popular hypoeutectic alloys with a large range of industrial applications. It has a varied phase and morphology; however, it features problems with acicular-shaped eutectic phase, and generally exhibits dendritic cast grain type. To change this situation, the Sr element acts as a modifier of eutectic, which, along with a grain refiner may increase mechanical properties. In this work, two different grain refiners (Al5Ti1B, Al5Ti2B) were applied to the A332 alloy modified with Sr, and analyzed in relation to grain size, hardness, corrosion resistance, and wear behavior. Corrosion tests in 3.5 wt.% NaCl solution, nanoindentations, and Heyn’s method to analyze grain size and microhardness as optical and SEM images were made to examine the changes caused by grain refiners. A reduction in grain size was achieved, and the influence in size and hardness of the β-Fe phase was verified in the wear and corrosion analyses.https://www.mdpi.com/2076-3417/13/1/430Al-Si cast alloysAlTiB grain refinersiron-containing intermetallicsstrontium modifiermicrostructurenanoindentation |
| spellingShingle | Bruno E. Arendarchuck Andre R. Mayer Willian R. de Oliveira Anderson G. M. Pukasiewicz Luciano A. Lourençato Hipolito D. C. Fals Eduardo Martínez-Cámara Effect of Ti-B Grain Refiners on Wear and Corrosion of the A332 Alloy with Sr Modification Applied Sciences Al-Si cast alloys AlTiB grain refiners iron-containing intermetallics strontium modifier microstructure nanoindentation |
| title | Effect of Ti-B Grain Refiners on Wear and Corrosion of the A332 Alloy with Sr Modification |
| title_full | Effect of Ti-B Grain Refiners on Wear and Corrosion of the A332 Alloy with Sr Modification |
| title_fullStr | Effect of Ti-B Grain Refiners on Wear and Corrosion of the A332 Alloy with Sr Modification |
| title_full_unstemmed | Effect of Ti-B Grain Refiners on Wear and Corrosion of the A332 Alloy with Sr Modification |
| title_short | Effect of Ti-B Grain Refiners on Wear and Corrosion of the A332 Alloy with Sr Modification |
| title_sort | effect of ti b grain refiners on wear and corrosion of the a332 alloy with sr modification |
| topic | Al-Si cast alloys AlTiB grain refiners iron-containing intermetallics strontium modifier microstructure nanoindentation |
| url | https://www.mdpi.com/2076-3417/13/1/430 |
| work_keys_str_mv | AT brunoearendarchuck effectoftibgrainrefinersonwearandcorrosionofthea332alloywithsrmodification AT andrermayer effectoftibgrainrefinersonwearandcorrosionofthea332alloywithsrmodification AT willianrdeoliveira effectoftibgrainrefinersonwearandcorrosionofthea332alloywithsrmodification AT andersongmpukasiewicz effectoftibgrainrefinersonwearandcorrosionofthea332alloywithsrmodification AT lucianoalourencato effectoftibgrainrefinersonwearandcorrosionofthea332alloywithsrmodification AT hipolitodcfals effectoftibgrainrefinersonwearandcorrosionofthea332alloywithsrmodification AT eduardomartinezcamara effectoftibgrainrefinersonwearandcorrosionofthea332alloywithsrmodification |