Cryogenic and high temperature tensile properties of 316L steel additively manufactured by laser powder bed fusion
316L stainless steel has many industry applications due to its excellent corrosion and oxidation resistance. Laser powder bed fusion (LPBF), a metal additive manufacturing process, is used to fabricate 316L in the current work. Epitaxial grains can be observed in as-built material. LPBF-processed 31...
| Main Authors: | , , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/179418 |
| _version_ | 1826110680238915584 |
|---|---|
| author | Zhai, Wengang Liu, Fulin Wang, Qingyuan Nai, Sharon Mui Ling Zhou, Wei |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Zhai, Wengang Liu, Fulin Wang, Qingyuan Nai, Sharon Mui Ling Zhou, Wei |
| author_sort | Zhai, Wengang |
| collection | NTU |
| description | 316L stainless steel has many industry applications due to its excellent corrosion and oxidation resistance. Laser powder bed fusion (LPBF), a metal additive manufacturing process, is used to fabricate 316L in the current work. Epitaxial grains can be observed in as-built material. LPBF-processed 316L demonstrates both high strength and ductility at room temperature. The yield strength is 609 MPa; the UTS is 722 MPa; the elongation is 62%; LPBF-processed 316L fractured high −196 °C shows an increased strength with good ductility due to transformation induced plasticity (TRIP) and twinning-induced plasticity (TWIP). The yield strength is 818 MPa; the UTS is 1349 MPa; the elongation is 39%. The formation of deformation twinning is significantly retarded when the testing temperature reached 200 °C. At 550 °C and 600 °C, tensile curves with serrated flow were observed which is associated with dynamic strain aging (DSA). Further increasing the testing temperature to 800 °C, the yield strength was decreased to 230 MPa and the UTS was decreased to 239 MPa with an elongation of 29%. Dynamic recrystallization was observed. The short elongation obtained at 800 °C was a result of the occurrence of high temperature creep. |
| first_indexed | 2024-10-01T02:38:28Z |
| format | Journal Article |
| id | ntu-10356/179418 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:38:28Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1794182024-07-30T06:14:40Z Cryogenic and high temperature tensile properties of 316L steel additively manufactured by laser powder bed fusion Zhai, Wengang Liu, Fulin Wang, Qingyuan Nai, Sharon Mui Ling Zhou, Wei School of Mechanical and Aerospace Engineering Singapore Centre for 3D Printing Engineering Additive manufacturing Stainless steel 316L stainless steel has many industry applications due to its excellent corrosion and oxidation resistance. Laser powder bed fusion (LPBF), a metal additive manufacturing process, is used to fabricate 316L in the current work. Epitaxial grains can be observed in as-built material. LPBF-processed 316L demonstrates both high strength and ductility at room temperature. The yield strength is 609 MPa; the UTS is 722 MPa; the elongation is 62%; LPBF-processed 316L fractured high −196 °C shows an increased strength with good ductility due to transformation induced plasticity (TRIP) and twinning-induced plasticity (TWIP). The yield strength is 818 MPa; the UTS is 1349 MPa; the elongation is 39%. The formation of deformation twinning is significantly retarded when the testing temperature reached 200 °C. At 550 °C and 600 °C, tensile curves with serrated flow were observed which is associated with dynamic strain aging (DSA). Further increasing the testing temperature to 800 °C, the yield strength was decreased to 230 MPa and the UTS was decreased to 239 MPa with an elongation of 29%. Dynamic recrystallization was observed. The short elongation obtained at 800 °C was a result of the occurrence of high temperature creep. 2024-07-30T06:14:40Z 2024-07-30T06:14:40Z 2024 Journal Article Zhai, W., Liu, F., Wang, Q., Nai, S. M. L. & Zhou, W. (2024). Cryogenic and high temperature tensile properties of 316L steel additively manufactured by laser powder bed fusion. Materials Science and Engineering: A, 900, 146461-. https://dx.doi.org/10.1016/j.msea.2024.146461 0921-5093 https://hdl.handle.net/10356/179418 10.1016/j.msea.2024.146461 2-s2.0-85190125322 900 146461 en Materials Science and Engineering: A © 2024 Elsevier B.V. All rights reserved. |
| spellingShingle | Engineering Additive manufacturing Stainless steel Zhai, Wengang Liu, Fulin Wang, Qingyuan Nai, Sharon Mui Ling Zhou, Wei Cryogenic and high temperature tensile properties of 316L steel additively manufactured by laser powder bed fusion |
| title | Cryogenic and high temperature tensile properties of 316L steel additively manufactured by laser powder bed fusion |
| title_full | Cryogenic and high temperature tensile properties of 316L steel additively manufactured by laser powder bed fusion |
| title_fullStr | Cryogenic and high temperature tensile properties of 316L steel additively manufactured by laser powder bed fusion |
| title_full_unstemmed | Cryogenic and high temperature tensile properties of 316L steel additively manufactured by laser powder bed fusion |
| title_short | Cryogenic and high temperature tensile properties of 316L steel additively manufactured by laser powder bed fusion |
| title_sort | cryogenic and high temperature tensile properties of 316l steel additively manufactured by laser powder bed fusion |
| topic | Engineering Additive manufacturing Stainless steel |
| url | https://hdl.handle.net/10356/179418 |
| work_keys_str_mv | AT zhaiwengang cryogenicandhightemperaturetensilepropertiesof316lsteeladditivelymanufacturedbylaserpowderbedfusion AT liufulin cryogenicandhightemperaturetensilepropertiesof316lsteeladditivelymanufacturedbylaserpowderbedfusion AT wangqingyuan cryogenicandhightemperaturetensilepropertiesof316lsteeladditivelymanufacturedbylaserpowderbedfusion AT naisharonmuiling cryogenicandhightemperaturetensilepropertiesof316lsteeladditivelymanufacturedbylaserpowderbedfusion AT zhouwei cryogenicandhightemperaturetensilepropertiesof316lsteeladditivelymanufacturedbylaserpowderbedfusion |