Columnar grain width control for SS316L via hatch spacing manipulation in laser powder bed fusion
This study provides a quantitative way to tailor the grain structure in laser powder bed fusion (LPBF). Square-bottomed columnar grains (SCGs) were developed with a certain width roughly equal to the hatch spacing. The development of SCGs relied on different distinguishable regions, which were ident...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2023-03-01
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| Series: | Materials Research Letters |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/21663831.2022.2140018 |
| _version_ | 1828335093554348032 |
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| author | Zhiheng Hu Shubo Gao Junfei Tai Shuo Qu Junhao Ding Xu Song Zheng Fan |
| author_facet | Zhiheng Hu Shubo Gao Junfei Tai Shuo Qu Junhao Ding Xu Song Zheng Fan |
| author_sort | Zhiheng Hu |
| collection | DOAJ |
| description | This study provides a quantitative way to tailor the grain structure in laser powder bed fusion (LPBF). Square-bottomed columnar grains (SCGs) were developed with a certain width roughly equal to the hatch spacing. The development of SCGs relied on different distinguishable regions, which were identified based on the differences in microstructural features between the melt-pool side and centreline. High lattice rotation accumulated at the melt-pool centreline, leading to grain boundaries forming at the centreline regions. The ultrasonic attenuation measurements and microhardness tests further validated the controllable properties. The findings indicated a novel approach to customise the material property. |
| first_indexed | 2024-04-13T21:41:18Z |
| format | Article |
| id | doaj.art-0f0ae2ab496948c29c52293b3296c9c5 |
| institution | Directory Open Access Journal |
| issn | 2166-3831 |
| language | English |
| last_indexed | 2024-04-13T21:41:18Z |
| publishDate | 2023-03-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Materials Research Letters |
| spelling | doaj.art-0f0ae2ab496948c29c52293b3296c9c52022-12-22T02:28:44ZengTaylor & Francis GroupMaterials Research Letters2166-38312023-03-0111323123810.1080/21663831.2022.2140018Columnar grain width control for SS316L via hatch spacing manipulation in laser powder bed fusionZhiheng Hu0Shubo Gao1Junfei Tai2Shuo Qu3Junhao Ding4Xu Song5Zheng Fan6School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, SingaporeSchool of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, SingaporeSchool of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, SingaporeDepartment of Mechanical and Automation Engineering, Chinese University of Hong Kong, Shatin, People’s Republic of ChinaDepartment of Mechanical and Automation Engineering, Chinese University of Hong Kong, Shatin, People’s Republic of ChinaDepartment of Mechanical and Automation Engineering, Chinese University of Hong Kong, Shatin, People’s Republic of ChinaSchool of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, SingaporeThis study provides a quantitative way to tailor the grain structure in laser powder bed fusion (LPBF). Square-bottomed columnar grains (SCGs) were developed with a certain width roughly equal to the hatch spacing. The development of SCGs relied on different distinguishable regions, which were identified based on the differences in microstructural features between the melt-pool side and centreline. High lattice rotation accumulated at the melt-pool centreline, leading to grain boundaries forming at the centreline regions. The ultrasonic attenuation measurements and microhardness tests further validated the controllable properties. The findings indicated a novel approach to customise the material property.https://www.tandfonline.com/doi/10.1080/21663831.2022.2140018Laser powder bed fusionhatch spacingcolumnar graincrystallographic texturestainless steel 316L |
| spellingShingle | Zhiheng Hu Shubo Gao Junfei Tai Shuo Qu Junhao Ding Xu Song Zheng Fan Columnar grain width control for SS316L via hatch spacing manipulation in laser powder bed fusion Materials Research Letters Laser powder bed fusion hatch spacing columnar grain crystallographic texture stainless steel 316L |
| title | Columnar grain width control for SS316L via hatch spacing manipulation in laser powder bed fusion |
| title_full | Columnar grain width control for SS316L via hatch spacing manipulation in laser powder bed fusion |
| title_fullStr | Columnar grain width control for SS316L via hatch spacing manipulation in laser powder bed fusion |
| title_full_unstemmed | Columnar grain width control for SS316L via hatch spacing manipulation in laser powder bed fusion |
| title_short | Columnar grain width control for SS316L via hatch spacing manipulation in laser powder bed fusion |
| title_sort | columnar grain width control for ss316l via hatch spacing manipulation in laser powder bed fusion |
| topic | Laser powder bed fusion hatch spacing columnar grain crystallographic texture stainless steel 316L |
| url | https://www.tandfonline.com/doi/10.1080/21663831.2022.2140018 |
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