Effect of Substrate Plate Heating on the Microstructure and Properties of Selective Laser Melted Al-20Si-5Fe-3Cu-1Mg Alloy
The Al-20Si-5Fe-3Cu-1Mg alloy was fabricated using selective laser melting (SLM). The microstructure and properties of the as-prepared SLM, post-treated SLM, and SLM with substrate plate heating are studied. The as-prepared SLM sample shows a non-uniform microstructure with four different phases: fc...
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| author | Pan Ma Pengcheng Ji Yandong Jia Xuerong Shi Zhishui Yu Konda Gokuldoss Prashanth |
| author_facet | Pan Ma Pengcheng Ji Yandong Jia Xuerong Shi Zhishui Yu Konda Gokuldoss Prashanth |
| author_sort | Pan Ma |
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| description | The Al-20Si-5Fe-3Cu-1Mg alloy was fabricated using selective laser melting (SLM). The microstructure and properties of the as-prepared SLM, post-treated SLM, and SLM with substrate plate heating are studied. The as-prepared SLM sample shows a non-uniform microstructure with four different phases: fcc-αAl, eutectic Al-Si, Al<sub>2</sub>MgSi, and δ-Al<sub>4</sub>FeSi<sub>2</sub>. With thermal treatment, the phases become coarser and the δ-Al<sub>4</sub>FeSi<sub>2</sub> phase transforms partially to β-Al<sub>5</sub>FeSi. The sample produced with SLM substrate plate heating shows a relatively uniform microstructure without a distinct difference between hatch overlaps and track cores. Room temperature compression test results show that an as-prepared SLM sample reaches a maximum strength (862 MPa) compared to the heat-treated (524 MPa) and substrate plate heated samples (474 MPa) due to the presence of fine microstructure and the internal stresses. The reduction in strength of the sample produced with substrate plate heating is due to the coarsening of the microstructure, but the plastic deformation shows an improvement (20%). The present observations suggest that substrate plate heating can be effectively employed not only to minimize the internal stresses (by impacting the cooling rate of the process) but can also be used to modulate the mechanical properties in a controlled fashion. |
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| language | English |
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| spelling | doaj.art-4e85e78500354bdf88f7d472e40985432023-12-03T12:44:26ZengMDPI AGMaterials1996-19442021-01-0114233010.3390/ma14020330Effect of Substrate Plate Heating on the Microstructure and Properties of Selective Laser Melted Al-20Si-5Fe-3Cu-1Mg AlloyPan Ma0Pengcheng Ji1Yandong Jia2Xuerong Shi3Zhishui Yu4Konda Gokuldoss Prashanth5School of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, ChinaSchool of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, ChinaLaboratory for Microstructures, Institute of Materials, Shanghai University, Shanghai 200444, ChinaSchool of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, ChinaSchool of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, ChinaDepartment of Mechanical and Industrial Engineering, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, EstoniaThe Al-20Si-5Fe-3Cu-1Mg alloy was fabricated using selective laser melting (SLM). The microstructure and properties of the as-prepared SLM, post-treated SLM, and SLM with substrate plate heating are studied. The as-prepared SLM sample shows a non-uniform microstructure with four different phases: fcc-αAl, eutectic Al-Si, Al<sub>2</sub>MgSi, and δ-Al<sub>4</sub>FeSi<sub>2</sub>. With thermal treatment, the phases become coarser and the δ-Al<sub>4</sub>FeSi<sub>2</sub> phase transforms partially to β-Al<sub>5</sub>FeSi. The sample produced with SLM substrate plate heating shows a relatively uniform microstructure without a distinct difference between hatch overlaps and track cores. Room temperature compression test results show that an as-prepared SLM sample reaches a maximum strength (862 MPa) compared to the heat-treated (524 MPa) and substrate plate heated samples (474 MPa) due to the presence of fine microstructure and the internal stresses. The reduction in strength of the sample produced with substrate plate heating is due to the coarsening of the microstructure, but the plastic deformation shows an improvement (20%). The present observations suggest that substrate plate heating can be effectively employed not only to minimize the internal stresses (by impacting the cooling rate of the process) but can also be used to modulate the mechanical properties in a controlled fashion.https://www.mdpi.com/1996-1944/14/2/330Al-Si-Fe-Cu-Mg alloy4XXX seriesselective laser meltingheat treatmentmicrostructuremechanical property |
| spellingShingle | Pan Ma Pengcheng Ji Yandong Jia Xuerong Shi Zhishui Yu Konda Gokuldoss Prashanth Effect of Substrate Plate Heating on the Microstructure and Properties of Selective Laser Melted Al-20Si-5Fe-3Cu-1Mg Alloy Materials Al-Si-Fe-Cu-Mg alloy 4XXX series selective laser melting heat treatment microstructure mechanical property |
| title | Effect of Substrate Plate Heating on the Microstructure and Properties of Selective Laser Melted Al-20Si-5Fe-3Cu-1Mg Alloy |
| title_full | Effect of Substrate Plate Heating on the Microstructure and Properties of Selective Laser Melted Al-20Si-5Fe-3Cu-1Mg Alloy |
| title_fullStr | Effect of Substrate Plate Heating on the Microstructure and Properties of Selective Laser Melted Al-20Si-5Fe-3Cu-1Mg Alloy |
| title_full_unstemmed | Effect of Substrate Plate Heating on the Microstructure and Properties of Selective Laser Melted Al-20Si-5Fe-3Cu-1Mg Alloy |
| title_short | Effect of Substrate Plate Heating on the Microstructure and Properties of Selective Laser Melted Al-20Si-5Fe-3Cu-1Mg Alloy |
| title_sort | effect of substrate plate heating on the microstructure and properties of selective laser melted al 20si 5fe 3cu 1mg alloy |
| topic | Al-Si-Fe-Cu-Mg alloy 4XXX series selective laser melting heat treatment microstructure mechanical property |
| url | https://www.mdpi.com/1996-1944/14/2/330 |
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