Additively manufactured ultrafine grained Aermet100 with superior mechanical property
In this study, Aermet100 high-strength steel was fabricated using laser powder bed fusion (LPBF) technology. The influence of various process parameters on the surface quality and relative density of the samples was systematically examined. Additionally, the effects of the heat treatment process on...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424029004 |
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| author | Yanwen Liang Jie Liu Xiaotian Zhang Yonghao Weng Sheng Zhong Tiannan Li Peng Zhang Chunpan Yang Ying Xing Jiazhe Fu Kehong Wang |
| author_facet | Yanwen Liang Jie Liu Xiaotian Zhang Yonghao Weng Sheng Zhong Tiannan Li Peng Zhang Chunpan Yang Ying Xing Jiazhe Fu Kehong Wang |
| author_sort | Yanwen Liang |
| collection | DOAJ |
| description | In this study, Aermet100 high-strength steel was fabricated using laser powder bed fusion (LPBF) technology. The influence of various process parameters on the surface quality and relative density of the samples was systematically examined. Additionally, the effects of the heat treatment process on the microstructure and mechanical properties of the material was investigated. The results indicate that the specimens were well-formed, achieving a relative density of 99.99% through an optimal combination of process parameters: a laser power of 220 W, scanning speed of 1000 mm/s, scanning rotation of 67°, and hatch spacing of 0.07 mm.The additively manufactured Aermet100 specimens exhibited ultrafine grains with an average size of 0.4 μm. Tempering of the as-built specimens at 482 °C for 2 h resulted in the highest strength and hardness. Grain refinement is identified as the primary factor contributing to the excellent combination of strength and ductility. Moreover, precipitation of secondary strengthening phases is attributed to hindering the movement of dislocations. The combined effects of fine grain strengthening, dislocation strengthening, and precipitation strengthening ultimately result in significant improvements in strength, reaching a maximum of 2064 MPa and an elongation of 8%. |
| format | Article |
| id | doaj-art-aab1840a9691477cbf1847598fc195dd |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-aab1840a9691477cbf1847598fc195dd2025-01-19T06:25:27ZengElsevierJournal of Materials Research and Technology2238-78542025-01-013418171831Additively manufactured ultrafine grained Aermet100 with superior mechanical propertyYanwen Liang0Jie Liu1Xiaotian Zhang2Yonghao Weng3Sheng Zhong4Tiannan Li5Peng Zhang6Chunpan Yang7Ying Xing8Jiazhe Fu9Kehong Wang10School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; National Key Laboratory of Special Vehicle Design and Manufacturing Integration Technology, Baotou 014030, ChinaSchool of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; National Key Laboratory of Special Vehicle Design and Manufacturing Integration Technology, Baotou 014030, China; Inner Mongolia First Machinery Group Co, LTD, Baotou, 014030, China; Corresponding author. School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; National Key Laboratory of Special Vehicle Design and Manufacturing Integration Technology, Baotou 014030, ChinaSchool of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; National Key Laboratory of Special Vehicle Design and Manufacturing Integration Technology, Baotou 014030, ChinaAVIC Landing-gear Advanced Manufacturing Corporation, Ltd, Changsha 410200, ChinaAVIC Landing-gear Advanced Manufacturing Corporation, Ltd, Changsha 410200, ChinaNational Key Laboratory of Special Vehicle Design and Manufacturing Integration Technology, Baotou 014030, China; Inner Mongolia First Machinery Group Co, LTD, Baotou, 014030, ChinaSchool of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; National Key Laboratory of Special Vehicle Design and Manufacturing Integration Technology, Baotou 014030, ChinaInner Mongolia First Machinery Group Co, LTD, Baotou, 014030, ChinaSchool of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; National Key Laboratory of Special Vehicle Design and Manufacturing Integration Technology, Baotou 014030, ChinaSchool of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; National Key Laboratory of Special Vehicle Design and Manufacturing Integration Technology, Baotou 014030, ChinaIn this study, Aermet100 high-strength steel was fabricated using laser powder bed fusion (LPBF) technology. The influence of various process parameters on the surface quality and relative density of the samples was systematically examined. Additionally, the effects of the heat treatment process on the microstructure and mechanical properties of the material was investigated. The results indicate that the specimens were well-formed, achieving a relative density of 99.99% through an optimal combination of process parameters: a laser power of 220 W, scanning speed of 1000 mm/s, scanning rotation of 67°, and hatch spacing of 0.07 mm.The additively manufactured Aermet100 specimens exhibited ultrafine grains with an average size of 0.4 μm. Tempering of the as-built specimens at 482 °C for 2 h resulted in the highest strength and hardness. Grain refinement is identified as the primary factor contributing to the excellent combination of strength and ductility. Moreover, precipitation of secondary strengthening phases is attributed to hindering the movement of dislocations. The combined effects of fine grain strengthening, dislocation strengthening, and precipitation strengthening ultimately result in significant improvements in strength, reaching a maximum of 2064 MPa and an elongation of 8%.http://www.sciencedirect.com/science/article/pii/S2238785424029004Laser powder bed fusionHeat treatment, Aermet100 steelMicrostructureMechanical properties |
| spellingShingle | Yanwen Liang Jie Liu Xiaotian Zhang Yonghao Weng Sheng Zhong Tiannan Li Peng Zhang Chunpan Yang Ying Xing Jiazhe Fu Kehong Wang Additively manufactured ultrafine grained Aermet100 with superior mechanical property Journal of Materials Research and Technology Laser powder bed fusion Heat treatment, Aermet100 steel Microstructure Mechanical properties |
| title | Additively manufactured ultrafine grained Aermet100 with superior mechanical property |
| title_full | Additively manufactured ultrafine grained Aermet100 with superior mechanical property |
| title_fullStr | Additively manufactured ultrafine grained Aermet100 with superior mechanical property |
| title_full_unstemmed | Additively manufactured ultrafine grained Aermet100 with superior mechanical property |
| title_short | Additively manufactured ultrafine grained Aermet100 with superior mechanical property |
| title_sort | additively manufactured ultrafine grained aermet100 with superior mechanical property |
| topic | Laser powder bed fusion Heat treatment, Aermet100 steel Microstructure Mechanical properties |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424029004 |
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