The Influence of Precipitation Hardening on the Damping Capacity in Al–Si–Mg Cast Components at Different Strain Amplitudes
An A356 alloy is a classic casting light alloy, which is able to be processed into complex geometrical shapes with tailored static and dynamic mechanical properties. As a promising material to reduce fuel and energy consumption in future vehicle designs, there is an interest in understanding the imp...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-05-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/12/5/804 |
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| author | Vitor H. Carneiro José Grilo Delfim Soares Isabel Duarte Hélder Puga |
| author_facet | Vitor H. Carneiro José Grilo Delfim Soares Isabel Duarte Hélder Puga |
| author_sort | Vitor H. Carneiro |
| collection | DOAJ |
| description | An A356 alloy is a classic casting light alloy, which is able to be processed into complex geometrical shapes with tailored static and dynamic mechanical properties. As a promising material to reduce fuel and energy consumption in future vehicle designs, there is an interest in understanding the impact of heat treatments on the damping capacity of this alloy. The Granato–Lücke theory is used to detail the forced vibration response in gravity cast A356. It is shown that a solution treatment enhances damping capacity in lower stress states (i.e., strain-independent regime) due to the increase in weak pinning length. However, in high-stress states (i.e., strain-dependent regime), peak-aged (T6) samples display higher damping capacity. This is proposed to be originated by releasing dislocations from weak pinning points, which start bowing in the precipitates that act as strong pinning points. Based on these results, it is shown for the first time that the selection of heat treatments to optimize damping in forced vibration is highly dependent on the expected stress–strain state and must be considered in the design of cast components. |
| first_indexed | 2024-03-10T03:24:41Z |
| format | Article |
| id | doaj.art-06b4c830ecee428383a9f09f7271a504 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T03:24:41Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-06b4c830ecee428383a9f09f7271a5042023-11-23T12:09:37ZengMDPI AGMetals2075-47012022-05-0112580410.3390/met12050804The Influence of Precipitation Hardening on the Damping Capacity in Al–Si–Mg Cast Components at Different Strain AmplitudesVitor H. Carneiro0José Grilo1Delfim Soares2Isabel Duarte3Hélder Puga4MEtRICs, Campus of Azurém, University of Minho, 4800-058 Guimarães, PortugalCMEMS-UMinho, Campus of Azurém, 4800-058 Guimarães, PortugalCMEMS-UMinho, Campus of Azurém, 4800-058 Guimarães, PortugalDepartment of Mechanical Engineering, Centre for Mechanical Technology and Automation (TEMA), University of Aveiro, 3810-193 Aveiro, PortugalCMEMS-UMinho, Campus of Azurém, 4800-058 Guimarães, PortugalAn A356 alloy is a classic casting light alloy, which is able to be processed into complex geometrical shapes with tailored static and dynamic mechanical properties. As a promising material to reduce fuel and energy consumption in future vehicle designs, there is an interest in understanding the impact of heat treatments on the damping capacity of this alloy. The Granato–Lücke theory is used to detail the forced vibration response in gravity cast A356. It is shown that a solution treatment enhances damping capacity in lower stress states (i.e., strain-independent regime) due to the increase in weak pinning length. However, in high-stress states (i.e., strain-dependent regime), peak-aged (T6) samples display higher damping capacity. This is proposed to be originated by releasing dislocations from weak pinning points, which start bowing in the precipitates that act as strong pinning points. Based on these results, it is shown for the first time that the selection of heat treatments to optimize damping in forced vibration is highly dependent on the expected stress–strain state and must be considered in the design of cast components.https://www.mdpi.com/2075-4701/12/5/804damping capacityA356heat treatmentmetal castingdislocations |
| spellingShingle | Vitor H. Carneiro José Grilo Delfim Soares Isabel Duarte Hélder Puga The Influence of Precipitation Hardening on the Damping Capacity in Al–Si–Mg Cast Components at Different Strain Amplitudes Metals damping capacity A356 heat treatment metal casting dislocations |
| title | The Influence of Precipitation Hardening on the Damping Capacity in Al–Si–Mg Cast Components at Different Strain Amplitudes |
| title_full | The Influence of Precipitation Hardening on the Damping Capacity in Al–Si–Mg Cast Components at Different Strain Amplitudes |
| title_fullStr | The Influence of Precipitation Hardening on the Damping Capacity in Al–Si–Mg Cast Components at Different Strain Amplitudes |
| title_full_unstemmed | The Influence of Precipitation Hardening on the Damping Capacity in Al–Si–Mg Cast Components at Different Strain Amplitudes |
| title_short | The Influence of Precipitation Hardening on the Damping Capacity in Al–Si–Mg Cast Components at Different Strain Amplitudes |
| title_sort | influence of precipitation hardening on the damping capacity in al si mg cast components at different strain amplitudes |
| topic | damping capacity A356 heat treatment metal casting dislocations |
| url | https://www.mdpi.com/2075-4701/12/5/804 |
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