Additive manufacturing of a single crystal nickel-based superalloy using selective electron beam melting
Single crystal (SX) nickel-based superalloy blade forms a key element of hightemperature gas turbines that are vital to aviation and power industries, owing to its excellent creep properties at elevated temperatures. Conventional manufacturing of SX Ni-based superalloy components is a tedious and...
| Main Authors: | , , , , , |
|---|---|
| Other Authors: | |
| Format: | Conference Paper |
| Language: | English |
| Published: |
2018
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/88727 http://hdl.handle.net/10220/45882 |
| _version_ | 1811687519425658880 |
|---|---|
| author | Chandra, Shubham Tan, Xipeng Wang, Chengcheng Seet, Gerald Tor, Shu Beng Yip, Yi Hong |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Chandra, Shubham Tan, Xipeng Wang, Chengcheng Seet, Gerald Tor, Shu Beng Yip, Yi Hong |
| author_sort | Chandra, Shubham |
| collection | NTU |
| description | Single crystal (SX) nickel-based superalloy blade forms a key element of hightemperature
gas turbines that are vital to aviation and power industries, owing to its excellent creep
properties at elevated temperatures. Conventional manufacturing of SX Ni-based superalloy
components is a tedious and expensive process due to stringent tolerance on part geometry and SX
quality. Additive manufacturing (AM) provides unique features such as economic sustainability,
automated manufacturing process and capability of printing identical parts. Moreover, the future of
AM technologies shows significant promise towards achieving complete layer-wise control, in terms
of varying process parameters. This study employs selective electron beam melting (SEBM), a
powder-bed metal AM technique, to additively manufacture a first-generation Nickel-based SX
superalloy. High vacuum environment and nearly unidirectional thermal gradient, inherent with
SEBM, make it the most promising AM technique for SX superalloy manufacturing. Detailed
microstructural characterization using optical microscopy, scanning electron microscopy and X-ray
diffraction reveal that dominant columnar grains aligned with the build direction were formed into
a strongly textured superalloy sample. However, there are still some cracks occurred along the
columnar grain boundaries. The correlation between SEBM processing and microstructure is
discussed. |
| first_indexed | 2024-10-01T05:17:36Z |
| format | Conference Paper |
| id | ntu-10356/88727 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:17:36Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/887272020-09-24T20:12:23Z Additive manufacturing of a single crystal nickel-based superalloy using selective electron beam melting Chandra, Shubham Tan, Xipeng Wang, Chengcheng Seet, Gerald Tor, Shu Beng Yip, Yi Hong School of Mechanical and Aerospace Engineering Proceedings of the 3rd International Conference on Progress in Additive Manufacturing (Pro-AM 2018) Singapore Centre for 3D Printing Superalloys DRNTU::Engineering::Mechanical engineering::Prototyping Additive Manufacturing Single crystal (SX) nickel-based superalloy blade forms a key element of hightemperature gas turbines that are vital to aviation and power industries, owing to its excellent creep properties at elevated temperatures. Conventional manufacturing of SX Ni-based superalloy components is a tedious and expensive process due to stringent tolerance on part geometry and SX quality. Additive manufacturing (AM) provides unique features such as economic sustainability, automated manufacturing process and capability of printing identical parts. Moreover, the future of AM technologies shows significant promise towards achieving complete layer-wise control, in terms of varying process parameters. This study employs selective electron beam melting (SEBM), a powder-bed metal AM technique, to additively manufacture a first-generation Nickel-based SX superalloy. High vacuum environment and nearly unidirectional thermal gradient, inherent with SEBM, make it the most promising AM technique for SX superalloy manufacturing. Detailed microstructural characterization using optical microscopy, scanning electron microscopy and X-ray diffraction reveal that dominant columnar grains aligned with the build direction were formed into a strongly textured superalloy sample. However, there are still some cracks occurred along the columnar grain boundaries. The correlation between SEBM processing and microstructure is discussed. Published version 2018-09-07T02:14:25Z 2019-12-06T17:09:43Z 2018-09-07T02:14:25Z 2019-12-06T17:09:43Z 2018 Conference Paper Chandra, S., Tan, X., Wang, C., Yip, Y. H., Seet, G., & Tor, S. B. (2018). Additive manufacturing of a single crystal nickel-based superalloy using selective electron beam melting. Proceedings of the 3rd International Conference on Progress in Additive Manufacturing (Pro-AM 2018), 427-432. doi:10.25341/D4V30K https://hdl.handle.net/10356/88727 http://hdl.handle.net/10220/45882 10.25341/D4V30K en © 2018 Nanyang Technological University. Published by Nanyang Technological University, Singapore. 6 p. application/pdf |
| spellingShingle | Superalloys DRNTU::Engineering::Mechanical engineering::Prototyping Additive Manufacturing Chandra, Shubham Tan, Xipeng Wang, Chengcheng Seet, Gerald Tor, Shu Beng Yip, Yi Hong Additive manufacturing of a single crystal nickel-based superalloy using selective electron beam melting |
| title | Additive manufacturing of a single crystal nickel-based superalloy using selective electron beam melting |
| title_full | Additive manufacturing of a single crystal nickel-based superalloy using selective electron beam melting |
| title_fullStr | Additive manufacturing of a single crystal nickel-based superalloy using selective electron beam melting |
| title_full_unstemmed | Additive manufacturing of a single crystal nickel-based superalloy using selective electron beam melting |
| title_short | Additive manufacturing of a single crystal nickel-based superalloy using selective electron beam melting |
| title_sort | additive manufacturing of a single crystal nickel based superalloy using selective electron beam melting |
| topic | Superalloys DRNTU::Engineering::Mechanical engineering::Prototyping Additive Manufacturing |
| url | https://hdl.handle.net/10356/88727 http://hdl.handle.net/10220/45882 |
| work_keys_str_mv | AT chandrashubham additivemanufacturingofasinglecrystalnickelbasedsuperalloyusingselectiveelectronbeammelting AT tanxipeng additivemanufacturingofasinglecrystalnickelbasedsuperalloyusingselectiveelectronbeammelting AT wangchengcheng additivemanufacturingofasinglecrystalnickelbasedsuperalloyusingselectiveelectronbeammelting AT seetgerald additivemanufacturingofasinglecrystalnickelbasedsuperalloyusingselectiveelectronbeammelting AT torshubeng additivemanufacturingofasinglecrystalnickelbasedsuperalloyusingselectiveelectronbeammelting AT yipyihong additivemanufacturingofasinglecrystalnickelbasedsuperalloyusingselectiveelectronbeammelting |