Structure and Mechanical Properties of Laser Powder Bed-Fused and Wrought PH13-8Mo-Type Precipitation Hardening Stainless Steels: Comparative Study
This work focuses on the structure and properties of a laser powder bed-fused (LPBF) precipitation hardening stainless steel and its chemically analogous wrought counterpart, both subjected to an identical combination of solution and aging treatments with the objective of maximizing the material har...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-06-01
|
| Series: | Journal of Manufacturing and Materials Processing |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2504-4494/5/3/67 |
| _version_ | 1827688824556224512 |
|---|---|
| author | William Turnier Trottier Alena Kreitcberg Vladimir Brailovski |
| author_facet | William Turnier Trottier Alena Kreitcberg Vladimir Brailovski |
| author_sort | William Turnier Trottier |
| collection | DOAJ |
| description | This work focuses on the structure and properties of a laser powder bed-fused (LPBF) precipitation hardening stainless steel and its chemically analogous wrought counterpart, both subjected to an identical combination of solution and aging treatments with the objective of maximizing the material hardness. It was observed that both the LPBF and wrought alloy follows similar evolution of their phase composition, microstructure, and mechanical properties throughout the different stages of the technological workflow. After a solution treatment at 850 °C for 0.5 h and an aging at 525 °C for 2 h, both alloys achieve their highest hardness of ~50 HRC. Notwithstanding this similarity, the LPBF alloy offers a finer microstructure and a lower amount of retained austenite than its wrought counterpart. This microstructure provides comparable strength characteristics to both the LPBF and wrought alloys, while offering a significantly higher ductility to the former as compared to the latter. The elongation at break of the LPBF alloy is, however, strongly build orientation-dependent, with a measured anisotropy of 23%. This anisotropy is caused by the presence of processing-induced pores (average pore size ~23 µm) in the LPBF alloy preferably distributed in planes oriented perpendicular to the build direction. |
| first_indexed | 2024-03-10T10:04:04Z |
| format | Article |
| id | doaj.art-e57f9138eeff4a2b98f1d3d52499b606 |
| institution | Directory Open Access Journal |
| issn | 2504-4494 |
| language | English |
| last_indexed | 2024-03-10T10:04:04Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Manufacturing and Materials Processing |
| spelling | doaj.art-e57f9138eeff4a2b98f1d3d52499b6062023-11-22T01:43:18ZengMDPI AGJournal of Manufacturing and Materials Processing2504-44942021-06-01536710.3390/jmmp5030067Structure and Mechanical Properties of Laser Powder Bed-Fused and Wrought PH13-8Mo-Type Precipitation Hardening Stainless Steels: Comparative StudyWilliam Turnier Trottier0Alena Kreitcberg1Vladimir Brailovski2Department of Mechanical Engineering, École de Technologie Supérieure, 1100 Notre-Dame Street West, Montreal, QC H3C 1K3, CanadaDepartment of Mechanical Engineering, École de Technologie Supérieure, 1100 Notre-Dame Street West, Montreal, QC H3C 1K3, CanadaDepartment of Mechanical Engineering, École de Technologie Supérieure, 1100 Notre-Dame Street West, Montreal, QC H3C 1K3, CanadaThis work focuses on the structure and properties of a laser powder bed-fused (LPBF) precipitation hardening stainless steel and its chemically analogous wrought counterpart, both subjected to an identical combination of solution and aging treatments with the objective of maximizing the material hardness. It was observed that both the LPBF and wrought alloy follows similar evolution of their phase composition, microstructure, and mechanical properties throughout the different stages of the technological workflow. After a solution treatment at 850 °C for 0.5 h and an aging at 525 °C for 2 h, both alloys achieve their highest hardness of ~50 HRC. Notwithstanding this similarity, the LPBF alloy offers a finer microstructure and a lower amount of retained austenite than its wrought counterpart. This microstructure provides comparable strength characteristics to both the LPBF and wrought alloys, while offering a significantly higher ductility to the former as compared to the latter. The elongation at break of the LPBF alloy is, however, strongly build orientation-dependent, with a measured anisotropy of 23%. This anisotropy is caused by the presence of processing-induced pores (average pore size ~23 µm) in the LPBF alloy preferably distributed in planes oriented perpendicular to the build direction.https://www.mdpi.com/2504-4494/5/3/67additive manufacturingmicrostructuremechanical propertieslaser powder bed fusionEOS Stainless Steel CXUddeholm Corrax |
| spellingShingle | William Turnier Trottier Alena Kreitcberg Vladimir Brailovski Structure and Mechanical Properties of Laser Powder Bed-Fused and Wrought PH13-8Mo-Type Precipitation Hardening Stainless Steels: Comparative Study Journal of Manufacturing and Materials Processing additive manufacturing microstructure mechanical properties laser powder bed fusion EOS Stainless Steel CX Uddeholm Corrax |
| title | Structure and Mechanical Properties of Laser Powder Bed-Fused and Wrought PH13-8Mo-Type Precipitation Hardening Stainless Steels: Comparative Study |
| title_full | Structure and Mechanical Properties of Laser Powder Bed-Fused and Wrought PH13-8Mo-Type Precipitation Hardening Stainless Steels: Comparative Study |
| title_fullStr | Structure and Mechanical Properties of Laser Powder Bed-Fused and Wrought PH13-8Mo-Type Precipitation Hardening Stainless Steels: Comparative Study |
| title_full_unstemmed | Structure and Mechanical Properties of Laser Powder Bed-Fused and Wrought PH13-8Mo-Type Precipitation Hardening Stainless Steels: Comparative Study |
| title_short | Structure and Mechanical Properties of Laser Powder Bed-Fused and Wrought PH13-8Mo-Type Precipitation Hardening Stainless Steels: Comparative Study |
| title_sort | structure and mechanical properties of laser powder bed fused and wrought ph13 8mo type precipitation hardening stainless steels comparative study |
| topic | additive manufacturing microstructure mechanical properties laser powder bed fusion EOS Stainless Steel CX Uddeholm Corrax |
| url | https://www.mdpi.com/2504-4494/5/3/67 |
| work_keys_str_mv | AT williamturniertrottier structureandmechanicalpropertiesoflaserpowderbedfusedandwroughtph138motypeprecipitationhardeningstainlesssteelscomparativestudy AT alenakreitcberg structureandmechanicalpropertiesoflaserpowderbedfusedandwroughtph138motypeprecipitationhardeningstainlesssteelscomparativestudy AT vladimirbrailovski structureandmechanicalpropertiesoflaserpowderbedfusedandwroughtph138motypeprecipitationhardeningstainlesssteelscomparativestudy |