Effects of chamber oxygen concentration on microstructure and mechanical properties of stainless steel 316L parts by selective laser melting
Selective laser melting (SLM) is a disruptive additive manufacturing technology that makes metal parts directly from 3D models in an automate layer-wise manner. Numerous studies have been carried out to examine the effects of various factors, such as laser power, scanning parameter, powder feedst...
| Main Authors: | , , |
|---|---|
| Other Authors: | |
| Format: | Conference Paper |
| Language: | English |
| Published: |
2018
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/88716 http://hdl.handle.net/10220/45874 |
| _version_ | 1826123368042070016 |
|---|---|
| author | Sun, Zhongji Tan, Xipeng Tor, Shu Beng |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Sun, Zhongji Tan, Xipeng Tor, Shu Beng |
| author_sort | Sun, Zhongji |
| collection | NTU |
| description | Selective laser melting (SLM) is a disruptive additive manufacturing technology that
makes metal parts directly from 3D models in an automate layer-wise manner. Numerous studies
have been carried out to examine the effects of various factors, such as laser power, scanning
parameter, powder feedstock shape, substrate temperatures etc, on the microstructure and
mechanical properties of SLM-built parts. The present work focused on the influence of chamber
oxygen concentration towards the SLM-built stainless steel 316L (SS316L) parts. Chamber oxygeninduced
amorphous silicon-enriched nano-particles have been found to be ubiquitous in SLM-built
SS316L parts. However, the contribution of these nano-particles towards the built part’s mechanical
properties is still unclear. Three batches of SS316L samples with varying chamber oxygen
concentrations of 0.08 mol%, 0.16 mol% and 0.24 mol% were fabricated by SLM. Tensile and
Vickers hardness tests were conducted. Backscatter Electron Microscopy was employed to elucidate
the mechanisms of these amorphous nano-particles on the overall mechanical performance. |
| first_indexed | 2024-10-01T06:03:31Z |
| format | Conference Paper |
| id | ntu-10356/88716 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:03:31Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/887162020-09-24T20:12:53Z Effects of chamber oxygen concentration on microstructure and mechanical properties of stainless steel 316L parts by selective laser melting Sun, Zhongji Tan, Xipeng Tor, Shu Beng 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 DRNTU::Engineering::Mechanical engineering::Prototyping Additive Manufacturing Selective Laser Melting Selective laser melting (SLM) is a disruptive additive manufacturing technology that makes metal parts directly from 3D models in an automate layer-wise manner. Numerous studies have been carried out to examine the effects of various factors, such as laser power, scanning parameter, powder feedstock shape, substrate temperatures etc, on the microstructure and mechanical properties of SLM-built parts. The present work focused on the influence of chamber oxygen concentration towards the SLM-built stainless steel 316L (SS316L) parts. Chamber oxygeninduced amorphous silicon-enriched nano-particles have been found to be ubiquitous in SLM-built SS316L parts. However, the contribution of these nano-particles towards the built part’s mechanical properties is still unclear. Three batches of SS316L samples with varying chamber oxygen concentrations of 0.08 mol%, 0.16 mol% and 0.24 mol% were fabricated by SLM. Tensile and Vickers hardness tests were conducted. Backscatter Electron Microscopy was employed to elucidate the mechanisms of these amorphous nano-particles on the overall mechanical performance. Published version 2018-09-06T08:49:32Z 2019-12-06T17:09:30Z 2018-09-06T08:49:32Z 2019-12-06T17:09:30Z 2018 Conference Paper Sun, Z., Tan, X., & Tor, S. B. (2018). Effects of chamber oxygen concentration on microstructure and mechanical properties of stainless steel 316L parts by selective laser melting. Proceedings of the 3rd International Conference on Progress in Additive Manufacturing (Pro-AM 2018), 470-475. doi:10.25341/D4CS38 https://hdl.handle.net/10356/88716 http://hdl.handle.net/10220/45874 10.25341/D4CS38 en © 2018 Nanyang Technological University. Published by Nanyang Technological University, Singapore. 6 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Mechanical engineering::Prototyping Additive Manufacturing Selective Laser Melting Sun, Zhongji Tan, Xipeng Tor, Shu Beng Effects of chamber oxygen concentration on microstructure and mechanical properties of stainless steel 316L parts by selective laser melting |
| title | Effects of chamber oxygen concentration on microstructure and mechanical properties of stainless steel 316L parts by selective laser melting |
| title_full | Effects of chamber oxygen concentration on microstructure and mechanical properties of stainless steel 316L parts by selective laser melting |
| title_fullStr | Effects of chamber oxygen concentration on microstructure and mechanical properties of stainless steel 316L parts by selective laser melting |
| title_full_unstemmed | Effects of chamber oxygen concentration on microstructure and mechanical properties of stainless steel 316L parts by selective laser melting |
| title_short | Effects of chamber oxygen concentration on microstructure and mechanical properties of stainless steel 316L parts by selective laser melting |
| title_sort | effects of chamber oxygen concentration on microstructure and mechanical properties of stainless steel 316l parts by selective laser melting |
| topic | DRNTU::Engineering::Mechanical engineering::Prototyping Additive Manufacturing Selective Laser Melting |
| url | https://hdl.handle.net/10356/88716 http://hdl.handle.net/10220/45874 |
| work_keys_str_mv | AT sunzhongji effectsofchamberoxygenconcentrationonmicrostructureandmechanicalpropertiesofstainlesssteel316lpartsbyselectivelasermelting AT tanxipeng effectsofchamberoxygenconcentrationonmicrostructureandmechanicalpropertiesofstainlesssteel316lpartsbyselectivelasermelting AT torshubeng effectsofchamberoxygenconcentrationonmicrostructureandmechanicalpropertiesofstainlesssteel316lpartsbyselectivelasermelting |