The heat treatment effects on the microstructure, hardness, and sigma phase content of L-PBF SAE 316L stainless steel
This research aims to enhance the understanding of the interrelationships among the manufacturing process, microstructure, and mechanical properties in the Laser Powder Bed Fusion (L-PBF) of SAE 316L stainless steel (SS), which can lead to the appearance of undesirable phases, like sigma...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Academia.edu Journals
2024-05-01
|
| Series: | Academia Materials Science |
| Online Access: | https://www.academia.edu/120249139/The_Heat_Treatment_Effects_on_the_Microstructure_Hardness_and_Sigma_Phase_Content_of_L_PBF_SAE_316L_Stainless_Steel |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1823857257336537088 |
|---|---|
| author | Jose M. Costa Beatriz S. Monteiro Francisca A. Rocha Mariana S. Cunha Manuel F. Vieira Elsa W. Sequeiros |
| author_facet | Jose M. Costa Beatriz S. Monteiro Francisca A. Rocha Mariana S. Cunha Manuel F. Vieira Elsa W. Sequeiros |
| author_sort | Jose M. Costa |
| collection | DOAJ |
| description |
This research aims to enhance the understanding of the interrelationships among the manufacturing process, microstructure, and mechanical properties in the Laser Powder Bed Fusion (L-PBF) of SAE 316L stainless steel (SS), which can lead to the appearance of undesirable phases, like sigma (σ). As part of this investigation, as-built samples underwent solubilization heat treatment (HT), primarily targeting the dissolution of the σ phase and microstructure homogenization, with a subsequent assessment of its impact on hardness. The study reveals the efficacy of HT in reducing σ phase content, particularly following treatments at 950°C and 1,050°C for 2 h. Notably, the dissolution of the process-induced microstructure becomes progressively significant within the temperature range of 800–950°C for 2 h. Furthermore, the study identifies a hardening effect associated with the process-induced microstructure on the samples. Remarkably, the sample exhibiting the highest hardness value featured a substantial σ phase content and maintained the process-induced structure after HT. |
| format | Article |
| id | doaj-art-1df66b4535e84b7ebc812b1c323cd734 |
| institution | Kabale University |
| issn | 2997-2027 |
| language | English |
| publishDate | 2024-05-01 |
| publisher | Academia.edu Journals |
| record_format | Article |
| series | Academia Materials Science |
| spelling | doaj-art-1df66b4535e84b7ebc812b1c323cd7342025-02-11T21:55:18ZengAcademia.edu JournalsAcademia Materials Science2997-20272024-05-011210.20935/AcadMatSci6230The heat treatment effects on the microstructure, hardness, and sigma phase content of L-PBF SAE 316L stainless steelJose M. Costa0Beatriz S. Monteiro1Francisca A. Rocha2Mariana S. Cunha3Manuel F. Vieira4Elsa W. Sequeiros5Department of Metallurgical and Materials Engineering, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200–465 Porto, Portugal.Department of Metallurgical and Materials Engineering, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200–465 Porto, Portugal.Department of Metallurgical and Materials Engineering, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200–465 Porto, Portugal.Department of Metallurgical and Materials Engineering, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200–465 Porto, Portugal.Department of Metallurgical and Materials Engineering, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200–465 Porto, Portugal.Department of Metallurgical and Materials Engineering, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200–465 Porto, Portugal. This research aims to enhance the understanding of the interrelationships among the manufacturing process, microstructure, and mechanical properties in the Laser Powder Bed Fusion (L-PBF) of SAE 316L stainless steel (SS), which can lead to the appearance of undesirable phases, like sigma (σ). As part of this investigation, as-built samples underwent solubilization heat treatment (HT), primarily targeting the dissolution of the σ phase and microstructure homogenization, with a subsequent assessment of its impact on hardness. The study reveals the efficacy of HT in reducing σ phase content, particularly following treatments at 950°C and 1,050°C for 2 h. Notably, the dissolution of the process-induced microstructure becomes progressively significant within the temperature range of 800–950°C for 2 h. Furthermore, the study identifies a hardening effect associated with the process-induced microstructure on the samples. Remarkably, the sample exhibiting the highest hardness value featured a substantial σ phase content and maintained the process-induced structure after HT.https://www.academia.edu/120249139/The_Heat_Treatment_Effects_on_the_Microstructure_Hardness_and_Sigma_Phase_Content_of_L_PBF_SAE_316L_Stainless_Steel |
| spellingShingle | Jose M. Costa Beatriz S. Monteiro Francisca A. Rocha Mariana S. Cunha Manuel F. Vieira Elsa W. Sequeiros The heat treatment effects on the microstructure, hardness, and sigma phase content of L-PBF SAE 316L stainless steel Academia Materials Science |
| title | The heat treatment effects on the microstructure, hardness, and sigma phase content of L-PBF SAE 316L stainless steel |
| title_full | The heat treatment effects on the microstructure, hardness, and sigma phase content of L-PBF SAE 316L stainless steel |
| title_fullStr | The heat treatment effects on the microstructure, hardness, and sigma phase content of L-PBF SAE 316L stainless steel |
| title_full_unstemmed | The heat treatment effects on the microstructure, hardness, and sigma phase content of L-PBF SAE 316L stainless steel |
| title_short | The heat treatment effects on the microstructure, hardness, and sigma phase content of L-PBF SAE 316L stainless steel |
| title_sort | heat treatment effects on the microstructure hardness and sigma phase content of l pbf sae 316l stainless steel |
| url | https://www.academia.edu/120249139/The_Heat_Treatment_Effects_on_the_Microstructure_Hardness_and_Sigma_Phase_Content_of_L_PBF_SAE_316L_Stainless_Steel |
| work_keys_str_mv | AT josemcosta theheattreatmenteffectsonthemicrostructurehardnessandsigmaphasecontentoflpbfsae316lstainlesssteel AT beatrizsmonteiro theheattreatmenteffectsonthemicrostructurehardnessandsigmaphasecontentoflpbfsae316lstainlesssteel AT franciscaarocha theheattreatmenteffectsonthemicrostructurehardnessandsigmaphasecontentoflpbfsae316lstainlesssteel AT marianascunha theheattreatmenteffectsonthemicrostructurehardnessandsigmaphasecontentoflpbfsae316lstainlesssteel AT manuelfvieira theheattreatmenteffectsonthemicrostructurehardnessandsigmaphasecontentoflpbfsae316lstainlesssteel AT elsawsequeiros theheattreatmenteffectsonthemicrostructurehardnessandsigmaphasecontentoflpbfsae316lstainlesssteel AT josemcosta heattreatmenteffectsonthemicrostructurehardnessandsigmaphasecontentoflpbfsae316lstainlesssteel AT beatrizsmonteiro heattreatmenteffectsonthemicrostructurehardnessandsigmaphasecontentoflpbfsae316lstainlesssteel AT franciscaarocha heattreatmenteffectsonthemicrostructurehardnessandsigmaphasecontentoflpbfsae316lstainlesssteel AT marianascunha heattreatmenteffectsonthemicrostructurehardnessandsigmaphasecontentoflpbfsae316lstainlesssteel AT manuelfvieira heattreatmenteffectsonthemicrostructurehardnessandsigmaphasecontentoflpbfsae316lstainlesssteel AT elsawsequeiros heattreatmenteffectsonthemicrostructurehardnessandsigmaphasecontentoflpbfsae316lstainlesssteel |