Influence of Annealing on Mechanical Properties of Al-20Si Processed by Selective Laser Melting
The microstructure and mechanical properties of Al-20Si produced by selective laser melting (SLM) are investigated for different heat treatment conditions. As a result of the high cooling rate during processing, the as-built SLM material displays a microstructure consisting of a supersaturated Al(Si...
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MDPI AG
2014-01-01
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| Series: | Metals |
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| Online Access: | http://www.mdpi.com/2075-4701/4/1/28 |
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| author | Pan Ma Konda G. Prashanth Sergio Scudino Yandong Jia Hongwei Wang Chunming Zou Zunjie Wei Jürgen Eckert |
| author_facet | Pan Ma Konda G. Prashanth Sergio Scudino Yandong Jia Hongwei Wang Chunming Zou Zunjie Wei Jürgen Eckert |
| author_sort | Pan Ma |
| collection | DOAJ |
| description | The microstructure and mechanical properties of Al-20Si produced by selective laser melting (SLM) are investigated for different heat treatment conditions. As a result of the high cooling rate during processing, the as-built SLM material displays a microstructure consisting of a supersaturated Al(Si) solid solution along with heavily refined eutectic Si and Si particles. The Si particles become coarser, and the eutectic Si gradually changes its morphology from fibrous to plate-like shape with increasing annealing temperature. The microstructural variations occurring during heat treatment significantly affect the mechanical behavior of the samples. The yield and ultimate strengths decrease from 374 and 506 MPa for the as-built SLM material to 162 and 252 MPa for the sample annealed at 673 K, whereas the ductility increases from 1.6 to 8.7%. This offers the possibility to tune microstructure and corresponding properties of the Al-20Si SLM parts to meet specific requirements. |
| first_indexed | 2024-12-24T11:00:07Z |
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| language | English |
| last_indexed | 2024-12-24T11:00:07Z |
| publishDate | 2014-01-01 |
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| spelling | doaj.art-aa63ff3fd74c49e7858bb9993dcb67bf2022-12-21T16:58:43ZengMDPI AGMetals2075-47012014-01-0141283610.3390/met4010028met4010028Influence of Annealing on Mechanical Properties of Al-20Si Processed by Selective Laser MeltingPan Ma0Konda G. Prashanth1Sergio Scudino2Yandong Jia3Hongwei Wang4Chunming Zou5Zunjie Wei6Jürgen Eckert7School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, ChinaIFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, GermanyIFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, GermanySchool of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, ChinaSchool of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, ChinaSchool of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, ChinaSchool of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, ChinaIFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, GermanyThe microstructure and mechanical properties of Al-20Si produced by selective laser melting (SLM) are investigated for different heat treatment conditions. As a result of the high cooling rate during processing, the as-built SLM material displays a microstructure consisting of a supersaturated Al(Si) solid solution along with heavily refined eutectic Si and Si particles. The Si particles become coarser, and the eutectic Si gradually changes its morphology from fibrous to plate-like shape with increasing annealing temperature. The microstructural variations occurring during heat treatment significantly affect the mechanical behavior of the samples. The yield and ultimate strengths decrease from 374 and 506 MPa for the as-built SLM material to 162 and 252 MPa for the sample annealed at 673 K, whereas the ductility increases from 1.6 to 8.7%. This offers the possibility to tune microstructure and corresponding properties of the Al-20Si SLM parts to meet specific requirements.http://www.mdpi.com/2075-4701/4/1/28Al-20Si alloyselective laser melting (SLM)heat treatmentmicrostructuremechanical properties |
| spellingShingle | Pan Ma Konda G. Prashanth Sergio Scudino Yandong Jia Hongwei Wang Chunming Zou Zunjie Wei Jürgen Eckert Influence of Annealing on Mechanical Properties of Al-20Si Processed by Selective Laser Melting Metals Al-20Si alloy selective laser melting (SLM) heat treatment microstructure mechanical properties |
| title | Influence of Annealing on Mechanical Properties of Al-20Si Processed by Selective Laser Melting |
| title_full | Influence of Annealing on Mechanical Properties of Al-20Si Processed by Selective Laser Melting |
| title_fullStr | Influence of Annealing on Mechanical Properties of Al-20Si Processed by Selective Laser Melting |
| title_full_unstemmed | Influence of Annealing on Mechanical Properties of Al-20Si Processed by Selective Laser Melting |
| title_short | Influence of Annealing on Mechanical Properties of Al-20Si Processed by Selective Laser Melting |
| title_sort | influence of annealing on mechanical properties of al 20si processed by selective laser melting |
| topic | Al-20Si alloy selective laser melting (SLM) heat treatment microstructure mechanical properties |
| url | http://www.mdpi.com/2075-4701/4/1/28 |
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