Heat affected zone liquation cracking evaluation on FeMnAl alloys
FeMnAl steels are currently generating a lot of interest with potential applications for structural parts in armored vehicles due to their lower density and outstanding mechanical properties. Despite the extensive mechanical performance and heat treatment exploration of this alloy class, further wel...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2024-12-01
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| Series: | Science and Technology of Advanced Materials |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/14686996.2024.2342232 |
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| author | Rafael Giorjao Kaue C. Riffel Eric Brizes Katherine Sebeck Antonio J. Ramirez |
| author_facet | Rafael Giorjao Kaue C. Riffel Eric Brizes Katherine Sebeck Antonio J. Ramirez |
| author_sort | Rafael Giorjao |
| collection | DOAJ |
| description | FeMnAl steels are currently generating a lot of interest with potential applications for structural parts in armored vehicles due to their lower density and outstanding mechanical properties. Despite the extensive mechanical performance and heat treatment exploration of this alloy class, further weldability investigation is required for future large-scale deployment. In the present study, the liquation cracking of four heats of cast FeMnAl alloys was investigated by the spot-Varestraint technique. The study focuses primarily on the effect of the major elements of the FeMnAl system: C, Mn and Al. Optical and electron microscopy were employed to investigate the microstructural features, and CALPHAD was employed to aid the discussion regarding the alloy’s composition differences and their effect on the liquation cracking susceptibility. The study was able to identify that compositions with the higher Mn, C, and lower Al presented the highest liquation cracking susceptibility. Conversely, composition presenting lower Mn, C, and Al showed the most resistant behavior. Furthermore, lower Al content promoted a fully-γ microstructure at low temperatures, which encouraged the appearance of longer cracks as a γ-matrix is more susceptible to HAZ cracking than a fully ferritic (α) or duplex (α + γ) microstructure. |
| format | Article |
| id | doaj-art-aee53f6b2ab542b8a39fd71c8e818b08 |
| institution | Kabale University |
| issn | 1468-6996 1878-5514 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Science and Technology of Advanced Materials |
| spelling | doaj-art-aee53f6b2ab542b8a39fd71c8e818b082024-12-23T08:54:39ZengTaylor & Francis GroupScience and Technology of Advanced Materials1468-69961878-55142024-12-0125110.1080/14686996.2024.2342232Heat affected zone liquation cracking evaluation on FeMnAl alloysRafael Giorjao0Kaue C. Riffel1Eric Brizes2Katherine Sebeck3Antonio J. Ramirez4Welding Engineering, Department of Materials Science and Engineering, The Ohio State University, Columbus, OH, USAWelding Engineering, Department of Materials Science and Engineering, The Ohio State University, Columbus, OH, USADepartment of Aerospace Materials, NASA John H Glenn Research Center, Cleveland, OH, USADepartment of Advanced Material Applications and Manufacturing, US Army Combat Capabilities Development Command Ground Vehicle Systems Center, Warren, MI, USAWelding Engineering, Department of Materials Science and Engineering, The Ohio State University, Columbus, OH, USAFeMnAl steels are currently generating a lot of interest with potential applications for structural parts in armored vehicles due to their lower density and outstanding mechanical properties. Despite the extensive mechanical performance and heat treatment exploration of this alloy class, further weldability investigation is required for future large-scale deployment. In the present study, the liquation cracking of four heats of cast FeMnAl alloys was investigated by the spot-Varestraint technique. The study focuses primarily on the effect of the major elements of the FeMnAl system: C, Mn and Al. Optical and electron microscopy were employed to investigate the microstructural features, and CALPHAD was employed to aid the discussion regarding the alloy’s composition differences and their effect on the liquation cracking susceptibility. The study was able to identify that compositions with the higher Mn, C, and lower Al presented the highest liquation cracking susceptibility. Conversely, composition presenting lower Mn, C, and Al showed the most resistant behavior. Furthermore, lower Al content promoted a fully-γ microstructure at low temperatures, which encouraged the appearance of longer cracks as a γ-matrix is more susceptible to HAZ cracking than a fully ferritic (α) or duplex (α + γ) microstructure.https://www.tandfonline.com/doi/10.1080/14686996.2024.2342232Spot varestraint testingFeMnAl steelsCALPHADliquation cracking |
| spellingShingle | Rafael Giorjao Kaue C. Riffel Eric Brizes Katherine Sebeck Antonio J. Ramirez Heat affected zone liquation cracking evaluation on FeMnAl alloys Science and Technology of Advanced Materials Spot varestraint testing FeMnAl steels CALPHAD liquation cracking |
| title | Heat affected zone liquation cracking evaluation on FeMnAl alloys |
| title_full | Heat affected zone liquation cracking evaluation on FeMnAl alloys |
| title_fullStr | Heat affected zone liquation cracking evaluation on FeMnAl alloys |
| title_full_unstemmed | Heat affected zone liquation cracking evaluation on FeMnAl alloys |
| title_short | Heat affected zone liquation cracking evaluation on FeMnAl alloys |
| title_sort | heat affected zone liquation cracking evaluation on femnal alloys |
| topic | Spot varestraint testing FeMnAl steels CALPHAD liquation cracking |
| url | https://www.tandfonline.com/doi/10.1080/14686996.2024.2342232 |
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