Microstructural Influence on Mechanical Properties of a Lightweight Ultrahigh Strength Fe-18Mn-10Al-0.9C-5Ni (wt%) Steel
This study evaluates the role of thermomechanical processing and heat treatment on the microstructure and mechanical properties of a hot rolled, annealed, and aged Fe-18Mn-10Al-0.9C-5Ni (wt%) steel. The steel exhibited rapid age hardening kinetics when aged in the temperature range of 500–600 °C for...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-09-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/10/10/1305 |
| _version_ | 1797552227589554176 |
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| author | Michael Piston Laura Bartlett Krista R. Limmer Daniel M. Field |
| author_facet | Michael Piston Laura Bartlett Krista R. Limmer Daniel M. Field |
| author_sort | Michael Piston |
| collection | DOAJ |
| description | This study evaluates the role of thermomechanical processing and heat treatment on the microstructure and mechanical properties of a hot rolled, annealed, and aged Fe-18Mn-10Al-0.9C-5Ni (wt%) steel. The steel exhibited rapid age hardening kinetics when aged in the temperature range of 500–600 °C for up to 50 h, which has been shown in other work to be the result of B2 ordering in the ferrite and κ-carbide precipitation within the austenite matrix. The ultimate tensile strength increased from 1120 MPa in the annealed condition to 1230 MPa after 2 h of aging at 570 °C. Charpy V-notch toughness was evaluated at −40 °C in sub-sized specimens with a maximum in the annealed and quenched condition of 28.5 J in the L-T orientation. |
| first_indexed | 2024-03-10T15:56:57Z |
| format | Article |
| id | doaj.art-91494ba10bc54c56b5377d19c2baed6f |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T15:56:57Z |
| publishDate | 2020-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-91494ba10bc54c56b5377d19c2baed6f2023-11-20T15:34:23ZengMDPI AGMetals2075-47012020-09-011010130510.3390/met10101305Microstructural Influence on Mechanical Properties of a Lightweight Ultrahigh Strength Fe-18Mn-10Al-0.9C-5Ni (wt%) SteelMichael Piston0Laura Bartlett1Krista R. Limmer2Daniel M. Field3Materials Science and Engineering Department, Missouri University of Science and Technology, Rolla, MO 65409, USAMaterials Science and Engineering Department, Missouri University of Science and Technology, Rolla, MO 65409, USAWeapons and Materials Research Directorate, US Army Combat Capabilities Development Command Army Research Laboratory, Aberdeen Proving Ground, MD 21005, USAWeapons and Materials Research Directorate, US Army Combat Capabilities Development Command Army Research Laboratory, Aberdeen Proving Ground, MD 21005, USAThis study evaluates the role of thermomechanical processing and heat treatment on the microstructure and mechanical properties of a hot rolled, annealed, and aged Fe-18Mn-10Al-0.9C-5Ni (wt%) steel. The steel exhibited rapid age hardening kinetics when aged in the temperature range of 500–600 °C for up to 50 h, which has been shown in other work to be the result of B2 ordering in the ferrite and κ-carbide precipitation within the austenite matrix. The ultimate tensile strength increased from 1120 MPa in the annealed condition to 1230 MPa after 2 h of aging at 570 °C. Charpy V-notch toughness was evaluated at −40 °C in sub-sized specimens with a maximum in the annealed and quenched condition of 28.5 J in the L-T orientation.https://www.mdpi.com/2075-4701/10/10/1305lightweight steelage hardeningFe-Mn-Al-Ckappa carbideB2NiAl |
| spellingShingle | Michael Piston Laura Bartlett Krista R. Limmer Daniel M. Field Microstructural Influence on Mechanical Properties of a Lightweight Ultrahigh Strength Fe-18Mn-10Al-0.9C-5Ni (wt%) Steel Metals lightweight steel age hardening Fe-Mn-Al-C kappa carbide B2 NiAl |
| title | Microstructural Influence on Mechanical Properties of a Lightweight Ultrahigh Strength Fe-18Mn-10Al-0.9C-5Ni (wt%) Steel |
| title_full | Microstructural Influence on Mechanical Properties of a Lightweight Ultrahigh Strength Fe-18Mn-10Al-0.9C-5Ni (wt%) Steel |
| title_fullStr | Microstructural Influence on Mechanical Properties of a Lightweight Ultrahigh Strength Fe-18Mn-10Al-0.9C-5Ni (wt%) Steel |
| title_full_unstemmed | Microstructural Influence on Mechanical Properties of a Lightweight Ultrahigh Strength Fe-18Mn-10Al-0.9C-5Ni (wt%) Steel |
| title_short | Microstructural Influence on Mechanical Properties of a Lightweight Ultrahigh Strength Fe-18Mn-10Al-0.9C-5Ni (wt%) Steel |
| title_sort | microstructural influence on mechanical properties of a lightweight ultrahigh strength fe 18mn 10al 0 9c 5ni wt steel |
| topic | lightweight steel age hardening Fe-Mn-Al-C kappa carbide B2 NiAl |
| url | https://www.mdpi.com/2075-4701/10/10/1305 |
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