How Slight Solidification Rate Variations within Cast Plate Affect Mechanical Response: A Study on As-Cast A356 Alloy with Cu Additions
The present work investigates a narrow range of secondary dendrite arm spacing (SDAS), in an as-cast A356 alloy with and without copper (Cu) additions. Cu was added to the base A356 alloy melt to reach the target concentration of 0.5 and 1 wt.%. Samples were selected from 3 different positions withi...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/4030689 |
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| author | Maria Teresa Di Giovanni Emanuela Cerri Takeshi Saito Shahid Akhtar Petter Åsholt Yanjun Li Marisa Di Sabatino |
| author_facet | Maria Teresa Di Giovanni Emanuela Cerri Takeshi Saito Shahid Akhtar Petter Åsholt Yanjun Li Marisa Di Sabatino |
| author_sort | Maria Teresa Di Giovanni |
| collection | DOAJ |
| description | The present work investigates a narrow range of secondary dendrite arm spacing (SDAS), in an as-cast A356 alloy with and without copper (Cu) additions. Cu was added to the base A356 alloy melt to reach the target concentration of 0.5 and 1 wt.%. Samples were selected from 3 different positions within the cast plate, offering 30, 35, and 40 μm SDAS variants. Tensile curves revealed a strong influence between the specimen cutting position and strength, with a pronounced effect in the Cu-containing alloys. Hardness measurements did not confirm the tensile response; hence, to understand the phenomenon, microstructural features have been investigated in detail. Eutectic silicon (Si) particle equivalent diameter (ED) size decreased from the top (T) to the bottom (B) position of the cast. Eutectic Si particle surface area (A%) was found to be denser at the B as compared to the T and simultaneously in the Cu-containing alloy as compared to the Cu-free reference alloy. Backscattered electron (BSE) images were employed to investigate the nature of the Cu-rich intermetallic phases. In conclusion, electrical conductivity measurements were performed to confirm the trends observed. |
| format | Article |
| id | doaj-art-580004d52087426fbb4ffabf5c28482b |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-580004d52087426fbb4ffabf5c28482b2025-02-03T01:31:00ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422018-01-01201810.1155/2018/40306894030689How Slight Solidification Rate Variations within Cast Plate Affect Mechanical Response: A Study on As-Cast A356 Alloy with Cu AdditionsMaria Teresa Di Giovanni0Emanuela Cerri1Takeshi Saito2Shahid Akhtar3Petter Åsholt4Yanjun Li5Marisa Di Sabatino6Department of Engineering and Architecture, University of Parma, Viale G. Usberti 18/A, 43124 Parma, ItalyDepartment of Engineering and Architecture, University of Parma, Viale G. Usberti 18/A, 43124 Parma, ItalyHydro Aluminium, Research and Technology Development (RTD), 6601 Sunndalsøra, NorwayHydro Aluminium, Research and Technology Development (RTD), 6601 Sunndalsøra, NorwayHydro Aluminium, Research and Technology Development (RTD), 6601 Sunndalsøra, NorwayDepartment of Materials Science and Engineering, Norwegian University of Science and Technology, Alfred Getz vei 2B, 7491 Trondheim, NorwayDepartment of Materials Science and Engineering, Norwegian University of Science and Technology, Alfred Getz vei 2B, 7491 Trondheim, NorwayThe present work investigates a narrow range of secondary dendrite arm spacing (SDAS), in an as-cast A356 alloy with and without copper (Cu) additions. Cu was added to the base A356 alloy melt to reach the target concentration of 0.5 and 1 wt.%. Samples were selected from 3 different positions within the cast plate, offering 30, 35, and 40 μm SDAS variants. Tensile curves revealed a strong influence between the specimen cutting position and strength, with a pronounced effect in the Cu-containing alloys. Hardness measurements did not confirm the tensile response; hence, to understand the phenomenon, microstructural features have been investigated in detail. Eutectic silicon (Si) particle equivalent diameter (ED) size decreased from the top (T) to the bottom (B) position of the cast. Eutectic Si particle surface area (A%) was found to be denser at the B as compared to the T and simultaneously in the Cu-containing alloy as compared to the Cu-free reference alloy. Backscattered electron (BSE) images were employed to investigate the nature of the Cu-rich intermetallic phases. In conclusion, electrical conductivity measurements were performed to confirm the trends observed.http://dx.doi.org/10.1155/2018/4030689 |
| spellingShingle | Maria Teresa Di Giovanni Emanuela Cerri Takeshi Saito Shahid Akhtar Petter Åsholt Yanjun Li Marisa Di Sabatino How Slight Solidification Rate Variations within Cast Plate Affect Mechanical Response: A Study on As-Cast A356 Alloy with Cu Additions Advances in Materials Science and Engineering |
| title | How Slight Solidification Rate Variations within Cast Plate Affect Mechanical Response: A Study on As-Cast A356 Alloy with Cu Additions |
| title_full | How Slight Solidification Rate Variations within Cast Plate Affect Mechanical Response: A Study on As-Cast A356 Alloy with Cu Additions |
| title_fullStr | How Slight Solidification Rate Variations within Cast Plate Affect Mechanical Response: A Study on As-Cast A356 Alloy with Cu Additions |
| title_full_unstemmed | How Slight Solidification Rate Variations within Cast Plate Affect Mechanical Response: A Study on As-Cast A356 Alloy with Cu Additions |
| title_short | How Slight Solidification Rate Variations within Cast Plate Affect Mechanical Response: A Study on As-Cast A356 Alloy with Cu Additions |
| title_sort | how slight solidification rate variations within cast plate affect mechanical response a study on as cast a356 alloy with cu additions |
| url | http://dx.doi.org/10.1155/2018/4030689 |
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