Selective Laser Melting of Aluminum and Its Alloys
The laser-based powder bed fusion (LBPF) process or commonly known as selective laser melting (SLM) has made significant progress since its inception. Initially, conventional materials like 316L, Ti6Al4V, and IN-718 were fabricated using the SLM process. However, it was inevitable to explore the pos...
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MDPI AG
2020-10-01
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| Online Access: | https://www.mdpi.com/1996-1944/13/20/4564 |
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| author | Zhi Wang Raghunandan Ummethala Neera Singh Shengyang Tang Challapalli Suryanarayana Jürgen Eckert Konda Gokuldoss Prashanth |
| author_facet | Zhi Wang Raghunandan Ummethala Neera Singh Shengyang Tang Challapalli Suryanarayana Jürgen Eckert Konda Gokuldoss Prashanth |
| author_sort | Zhi Wang |
| collection | DOAJ |
| description | The laser-based powder bed fusion (LBPF) process or commonly known as selective laser melting (SLM) has made significant progress since its inception. Initially, conventional materials like 316L, Ti6Al4V, and IN-718 were fabricated using the SLM process. However, it was inevitable to explore the possible fabrication of the second most popular structural material after Fe-based alloys/steel, the Al-based alloys by SLM. Al-based alloys exhibit some inherent difficulties due to the following factors: the presence of surface oxide layer, solidification cracking during melt cooling, high reflectivity from the surface, high thermal conductivity of the metal, poor flowability of the powder, low melting temperature, etc. Researchers have overcome these difficulties to successfully fabricate the different Al-based alloys by SLM. However, there exists no review dealing with the fabrication of different Al-based alloys by SLM, their fabrication issues, microstructure, and their correlation with properties in detail. Hence, the present review attempts to introduce the SLM process followed by a detailed discussion about the processing parameters that form the core of the alloy development process. This is followed by the current research status on the processing of Al-based alloys and microstructure evaluation (including defects, internal stresses, etc.), which are dealt with on the basis of individual Al-based series. The mechanical properties of these alloys are discussed in detail followed by the other important properties like tribological properties, fatigue properties, etc. Lastly, an outlook is given at the end of this review. |
| first_indexed | 2024-03-10T15:37:26Z |
| format | Article |
| id | doaj.art-6175862a9d2d4b28bd56b865fdae6693 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T15:37:26Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-6175862a9d2d4b28bd56b865fdae66932023-11-20T17:04:58ZengMDPI AGMaterials1996-19442020-10-011320456410.3390/ma13204564Selective Laser Melting of Aluminum and Its AlloysZhi Wang0Raghunandan Ummethala1Neera Singh2Shengyang Tang3Challapalli Suryanarayana4Jürgen Eckert5Konda Gokuldoss Prashanth6National Engineering Research Center of Near-net-shape Forming for Metallic Materials, School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, ChinaDepartment of Mechanical and Industrial Engineering, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, EstoniaDepartment of Mechanical and Industrial Engineering, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, EstoniaNational Engineering Research Center of Near-net-shape Forming for Metallic Materials, School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, ChinaDepartment of Mechanical and Aerospace Engineering, University of Central Florida, Orlando, FL 32816-2450, USAErich Schmid Institute of Materials Science, Austrian Academy of Sciences, Jahnstraße 12, A-8700 Leoben, AustriaDepartment of Mechanical and Industrial Engineering, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, EstoniaThe laser-based powder bed fusion (LBPF) process or commonly known as selective laser melting (SLM) has made significant progress since its inception. Initially, conventional materials like 316L, Ti6Al4V, and IN-718 were fabricated using the SLM process. However, it was inevitable to explore the possible fabrication of the second most popular structural material after Fe-based alloys/steel, the Al-based alloys by SLM. Al-based alloys exhibit some inherent difficulties due to the following factors: the presence of surface oxide layer, solidification cracking during melt cooling, high reflectivity from the surface, high thermal conductivity of the metal, poor flowability of the powder, low melting temperature, etc. Researchers have overcome these difficulties to successfully fabricate the different Al-based alloys by SLM. However, there exists no review dealing with the fabrication of different Al-based alloys by SLM, their fabrication issues, microstructure, and their correlation with properties in detail. Hence, the present review attempts to introduce the SLM process followed by a detailed discussion about the processing parameters that form the core of the alloy development process. This is followed by the current research status on the processing of Al-based alloys and microstructure evaluation (including defects, internal stresses, etc.), which are dealt with on the basis of individual Al-based series. The mechanical properties of these alloys are discussed in detail followed by the other important properties like tribological properties, fatigue properties, etc. Lastly, an outlook is given at the end of this review.https://www.mdpi.com/1996-1944/13/20/4564additive manufacturingselective laser meltinglight metalscharacterizationpropertiesapplications |
| spellingShingle | Zhi Wang Raghunandan Ummethala Neera Singh Shengyang Tang Challapalli Suryanarayana Jürgen Eckert Konda Gokuldoss Prashanth Selective Laser Melting of Aluminum and Its Alloys Materials additive manufacturing selective laser melting light metals characterization properties applications |
| title | Selective Laser Melting of Aluminum and Its Alloys |
| title_full | Selective Laser Melting of Aluminum and Its Alloys |
| title_fullStr | Selective Laser Melting of Aluminum and Its Alloys |
| title_full_unstemmed | Selective Laser Melting of Aluminum and Its Alloys |
| title_short | Selective Laser Melting of Aluminum and Its Alloys |
| title_sort | selective laser melting of aluminum and its alloys |
| topic | additive manufacturing selective laser melting light metals characterization properties applications |
| url | https://www.mdpi.com/1996-1944/13/20/4564 |
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