Stacking Fault Energy Determination in Fe-Mn-Al-C Austenitic Steels by X-ray Diffraction
A critical assessment has been performed to determine the stacking fault energy (SFE) of the austenite phase in high manganese steels using X-ray diffraction (XRD). It was found that the SFE varies substantially with the chosen elastic constants. This strong dependence induces substantial errors in...
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MDPI AG
2021-10-01
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| author | Jaime A. Castañeda Oscar A. Zambrano Germán A. Alcázar Sara A. Rodríguez John J. Coronado |
| author_facet | Jaime A. Castañeda Oscar A. Zambrano Germán A. Alcázar Sara A. Rodríguez John J. Coronado |
| author_sort | Jaime A. Castañeda |
| collection | DOAJ |
| description | A critical assessment has been performed to determine the stacking fault energy (SFE) of the austenite phase in high manganese steels using X-ray diffraction (XRD). It was found that the SFE varies substantially with the chosen elastic constants. This strong dependence induces substantial errors in the estimated values of the SFE of the austenite and, thus, the mechanical behavior of Fe-Mn-Al-C steels. The SFE of three different Fe-Mn-Al-C alloys with varying aluminum (Al) content was determined in order to establish the main plastic deformation mechanism. The aim of this work is to establish a more straightforward and reliable methodology to calculate the SFE by XRD. In this effort, it was determined that uncertainty in the elastic constants can generate errors in up to 37% of the SFE. Moreover, in the studied case, for average of elastic constant values, the predominant deformation mechanism is defined, but when considering one set of constants, these can present uncertainty of 2.7 mJ/m<sup>2</sup> and 4.4 mJ/m<sup>2</sup> for alloys of 0% Al and 3% Al, respectively. This would lead them to be within the following plastic deformation mechanism, while for 8% Al the uncertainty is negligible. |
| first_indexed | 2024-03-10T05:16:59Z |
| format | Article |
| id | doaj.art-9f9251df19344a34a498a66ef1788fdb |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T05:16:59Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
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| series | Metals |
| spelling | doaj.art-9f9251df19344a34a498a66ef1788fdb2023-11-23T00:22:16ZengMDPI AGMetals2075-47012021-10-011111170110.3390/met11111701Stacking Fault Energy Determination in Fe-Mn-Al-C Austenitic Steels by X-ray DiffractionJaime A. Castañeda0Oscar A. Zambrano1Germán A. Alcázar2Sara A. Rodríguez3John J. Coronado4Mechanical Engineering School, Universidad del Valle, Cali 76001, ColombiaMining Wear and Corrosion Laboratory, National Research Council Canada, Vancouver, BC V6T 1W5, CanadaDepartment of Physics, Universidad del Valle, Cali 76001, ColombiaMechanical Engineering School, Universidad del Valle, Cali 76001, ColombiaMechanical Engineering School, Universidad del Valle, Cali 76001, ColombiaA critical assessment has been performed to determine the stacking fault energy (SFE) of the austenite phase in high manganese steels using X-ray diffraction (XRD). It was found that the SFE varies substantially with the chosen elastic constants. This strong dependence induces substantial errors in the estimated values of the SFE of the austenite and, thus, the mechanical behavior of Fe-Mn-Al-C steels. The SFE of three different Fe-Mn-Al-C alloys with varying aluminum (Al) content was determined in order to establish the main plastic deformation mechanism. The aim of this work is to establish a more straightforward and reliable methodology to calculate the SFE by XRD. In this effort, it was determined that uncertainty in the elastic constants can generate errors in up to 37% of the SFE. Moreover, in the studied case, for average of elastic constant values, the predominant deformation mechanism is defined, but when considering one set of constants, these can present uncertainty of 2.7 mJ/m<sup>2</sup> and 4.4 mJ/m<sup>2</sup> for alloys of 0% Al and 3% Al, respectively. This would lead them to be within the following plastic deformation mechanism, while for 8% Al the uncertainty is negligible.https://www.mdpi.com/2075-4701/11/11/1701austenitic steelX-ray diffractionstacking fault energyelastic constants |
| spellingShingle | Jaime A. Castañeda Oscar A. Zambrano Germán A. Alcázar Sara A. Rodríguez John J. Coronado Stacking Fault Energy Determination in Fe-Mn-Al-C Austenitic Steels by X-ray Diffraction Metals austenitic steel X-ray diffraction stacking fault energy elastic constants |
| title | Stacking Fault Energy Determination in Fe-Mn-Al-C Austenitic Steels by X-ray Diffraction |
| title_full | Stacking Fault Energy Determination in Fe-Mn-Al-C Austenitic Steels by X-ray Diffraction |
| title_fullStr | Stacking Fault Energy Determination in Fe-Mn-Al-C Austenitic Steels by X-ray Diffraction |
| title_full_unstemmed | Stacking Fault Energy Determination in Fe-Mn-Al-C Austenitic Steels by X-ray Diffraction |
| title_short | Stacking Fault Energy Determination in Fe-Mn-Al-C Austenitic Steels by X-ray Diffraction |
| title_sort | stacking fault energy determination in fe mn al c austenitic steels by x ray diffraction |
| topic | austenitic steel X-ray diffraction stacking fault energy elastic constants |
| url | https://www.mdpi.com/2075-4701/11/11/1701 |
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