Grain refinement in laser manufactured Al-based composites with TiB2 ceramic
Al-based composites reinforced with TiB2 ceramics (1 wt.%, 2 wt.% and 5 wt.%) have been manufactured through selective laser melting (SLM). The results show that the densification, microstructure and mechanical properties of the SLM-processed composites are sensitive to the ceramic particle fraction...
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| Format: | Article |
| Language: | English |
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Elsevier
2020-05-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785420312229 |
| _version_ | 1818204557039108096 |
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| author | Lixia Xi Dongdong Gu Shuang Guo Ruiqi Wang Kai Ding Konda Gokuldoss Prashanth |
| author_facet | Lixia Xi Dongdong Gu Shuang Guo Ruiqi Wang Kai Ding Konda Gokuldoss Prashanth |
| author_sort | Lixia Xi |
| collection | DOAJ |
| description | Al-based composites reinforced with TiB2 ceramics (1 wt.%, 2 wt.% and 5 wt.%) have been manufactured through selective laser melting (SLM). The results show that the densification, microstructure and mechanical properties of the SLM-processed composites are sensitive to the ceramic particle fraction. The average grain size of the composites decreased from ∼6.32 to ∼1.55 μm with increasing TiB2 fraction from 1 to 5 wt.% respectively. Fine equiaxed grains with narrow size distribution were obtained for composites with relatively high amount of TiB2 particles. The effects of TiB2 ceramic fraction on grain refinement and strengthening mechanisms of SLM-processed composites were discussed. Al-based composite with 2 wt.% TiB2 ceramic was determined to be optimum, especially in the view of manufacturing quality, grain refinement and mechanical properties. The composites at an optimum fraction of 2 wt.% TiB2 exhibited high microhardness of ∼127 HV0.2, tensile strength of ∼444 MPa, yield strength of ∼283 MPa and elongation of ∼4.2% owing to collective effects of dispersion and grain refinement strengthening as well as high degree of densification. This study can readily offer reference values for laser additive manufacturing of other metal matrix composites to obtain a good compromise of strength and ductility by tuning reinforcement fraction. |
| first_indexed | 2024-12-12T03:43:08Z |
| format | Article |
| id | doaj.art-a703d68978964c98a595ee6a480d4c06 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-12T03:43:08Z |
| publishDate | 2020-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-a703d68978964c98a595ee6a480d4c062022-12-22T00:39:38ZengElsevierJournal of Materials Research and Technology2238-78542020-05-019326112622Grain refinement in laser manufactured Al-based composites with TiB2 ceramicLixia Xi0Dongdong Gu1Shuang Guo2Ruiqi Wang3Kai Ding4Konda Gokuldoss Prashanth5College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Yudao Street 29, 210016 Nanjing, PR China; Jiangsu Provincial Engineering Laboratory for Laser Additive Manufacturing of High-Performance Metallic Components, Nanjing University of Aeronautics and Astronautics, Yudao Street 29, 210016 Nanjing, PR ChinaCollege of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Yudao Street 29, 210016 Nanjing, PR China; Jiangsu Provincial Engineering Laboratory for Laser Additive Manufacturing of High-Performance Metallic Components, Nanjing University of Aeronautics and Astronautics, Yudao Street 29, 210016 Nanjing, PR China; National Key Laboratory of Science and Technology on Helicopter Transmission, Nanjing University of Aeronautics and Astronautics, Yudao Street 29, 210016 Nanjing, PR China; Corresponding author.College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Yudao Street 29, 210016 Nanjing, PR China; Jiangsu Provincial Engineering Laboratory for Laser Additive Manufacturing of High-Performance Metallic Components, Nanjing University of Aeronautics and Astronautics, Yudao Street 29, 210016 Nanjing, PR ChinaCollege of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Yudao Street 29, 210016 Nanjing, PR China; Jiangsu Provincial Engineering Laboratory for Laser Additive Manufacturing of High-Performance Metallic Components, Nanjing University of Aeronautics and Astronautics, Yudao Street 29, 210016 Nanjing, PR ChinaCollege of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Yudao Street 29, 210016 Nanjing, PR China; Jiangsu Provincial Engineering Laboratory for Laser Additive Manufacturing of High-Performance Metallic Components, Nanjing University of Aeronautics and Astronautics, Yudao Street 29, 210016 Nanjing, PR ChinaDepartment of Mechanical and Industrial Engineering, Tallinn University of Technology, Ehitajate Tee 5, 19086, Tallinn, Estonia; Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Jahnstraße 12, A-8700, Leoben, Austria; CBCMT, School of Engineering, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, IndiaAl-based composites reinforced with TiB2 ceramics (1 wt.%, 2 wt.% and 5 wt.%) have been manufactured through selective laser melting (SLM). The results show that the densification, microstructure and mechanical properties of the SLM-processed composites are sensitive to the ceramic particle fraction. The average grain size of the composites decreased from ∼6.32 to ∼1.55 μm with increasing TiB2 fraction from 1 to 5 wt.% respectively. Fine equiaxed grains with narrow size distribution were obtained for composites with relatively high amount of TiB2 particles. The effects of TiB2 ceramic fraction on grain refinement and strengthening mechanisms of SLM-processed composites were discussed. Al-based composite with 2 wt.% TiB2 ceramic was determined to be optimum, especially in the view of manufacturing quality, grain refinement and mechanical properties. The composites at an optimum fraction of 2 wt.% TiB2 exhibited high microhardness of ∼127 HV0.2, tensile strength of ∼444 MPa, yield strength of ∼283 MPa and elongation of ∼4.2% owing to collective effects of dispersion and grain refinement strengthening as well as high degree of densification. This study can readily offer reference values for laser additive manufacturing of other metal matrix composites to obtain a good compromise of strength and ductility by tuning reinforcement fraction.http://www.sciencedirect.com/science/article/pii/S2238785420312229Al-based compositesTiB2ceramicSelective laser melting (SLM)Grain refinementMechanical property |
| spellingShingle | Lixia Xi Dongdong Gu Shuang Guo Ruiqi Wang Kai Ding Konda Gokuldoss Prashanth Grain refinement in laser manufactured Al-based composites with TiB2 ceramic Journal of Materials Research and Technology Al-based composites TiB2ceramic Selective laser melting (SLM) Grain refinement Mechanical property |
| title | Grain refinement in laser manufactured Al-based composites with TiB2 ceramic |
| title_full | Grain refinement in laser manufactured Al-based composites with TiB2 ceramic |
| title_fullStr | Grain refinement in laser manufactured Al-based composites with TiB2 ceramic |
| title_full_unstemmed | Grain refinement in laser manufactured Al-based composites with TiB2 ceramic |
| title_short | Grain refinement in laser manufactured Al-based composites with TiB2 ceramic |
| title_sort | grain refinement in laser manufactured al based composites with tib2 ceramic |
| topic | Al-based composites TiB2ceramic Selective laser melting (SLM) Grain refinement Mechanical property |
| url | http://www.sciencedirect.com/science/article/pii/S2238785420312229 |
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