In-Situ Observation of Acicular Ferrite Transformation in High-Strength Low-Alloy Steel Using Confocal Laser Scanning Microscopy
In-situ observation of the transformation behavior of acicular ferrite in high-strength low-alloy steel using confocal laser scanning microscopy was discussed in terms of nucleation and growth. It is found that acicular ferrite nucleated at dislocations and slip bands in deformed austenite grains in...
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Polish Academy of Sciences
2022-11-01
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| Series: | Archives of Metallurgy and Materials |
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| Online Access: | https://journals.pan.pl/Content/125121/PDF/AMM-2022-4-39-Hwang.pdf |
| _version_ | 1811218605244678144 |
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| author | Sang-In Lee Seung-Hyeok Shin Hyeonwoo Park Hansoo Kim Joonho Lee Byoungchul Hwang |
| author_facet | Sang-In Lee Seung-Hyeok Shin Hyeonwoo Park Hansoo Kim Joonho Lee Byoungchul Hwang |
| author_sort | Sang-In Lee |
| collection | DOAJ |
| description | In-situ observation of the transformation behavior of acicular ferrite in high-strength low-alloy steel using confocal laser scanning microscopy was discussed in terms of nucleation and growth. It is found that acicular ferrite nucleated at dislocations and slip bands in deformed austenite grains introduced by hot deformation in the non-recrystallization austenite region, and then proceeded to grow into an austenite grain boundary. According to an ex-situ EBSD analysis, acicular ferrite had an irregular shape morphology, finer grains with sub-grain boundaries, and higher strain values than those of polygonal ferrite. The fraction of acicular ferrite was affected by the deformation condition and increased with increasing the amount of hot deformation in the non-recrystallization austenite region. |
| first_indexed | 2024-04-12T07:12:14Z |
| format | Article |
| id | doaj.art-f2bb443c4f8043e798f874c601c38daa |
| institution | Directory Open Access Journal |
| issn | 2300-1909 |
| language | English |
| last_indexed | 2024-04-12T07:12:14Z |
| publishDate | 2022-11-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Metallurgy and Materials |
| spelling | doaj.art-f2bb443c4f8043e798f874c601c38daa2022-12-22T03:42:37ZengPolish Academy of SciencesArchives of Metallurgy and Materials2300-19092022-11-01vol. 67No 414971501https://doi.org/10.24425/amm.2022.141081In-Situ Observation of Acicular Ferrite Transformation in High-Strength Low-Alloy Steel Using Confocal Laser Scanning MicroscopySang-In Lee0https://orcid.org/0000-0002-9393-7171Seung-Hyeok Shin1https://orcid.org/0000-0002-0458-5806Hyeonwoo Park2https://orcid.org/0000-0003-2562-4656Hansoo Kim3https://orcid.org/0000-0002-4014-8670Joonho Lee4https://orcid.org/0000-0002-9464-6480Byoungchul Hwang5https://orcid.org/0000-0001-6330-4747Seoul National University of Science and Technology, Department of Materials Science and Engineering, Seoul, 01811, Republic of KoreaSeoul National University of Science and Technology, Department of Materials Science and Engineering, Seoul, 01811, Republic of KoreaKorea University, Department of Materials Science and Engineering, Seoul, 02841, Republic of KoreaKorea University, Department of Materials Science and Engineering, Seoul, 02841, Republic of KoreaKorea University, Department of Materials Science and Engineering, Seoul, 02841, Republic of KoreaSeoul National University of Science and Technology, Department of Materials Science and Engineering, Seoul, 01811, Republic of KoreaIn-situ observation of the transformation behavior of acicular ferrite in high-strength low-alloy steel using confocal laser scanning microscopy was discussed in terms of nucleation and growth. It is found that acicular ferrite nucleated at dislocations and slip bands in deformed austenite grains introduced by hot deformation in the non-recrystallization austenite region, and then proceeded to grow into an austenite grain boundary. According to an ex-situ EBSD analysis, acicular ferrite had an irregular shape morphology, finer grains with sub-grain boundaries, and higher strain values than those of polygonal ferrite. The fraction of acicular ferrite was affected by the deformation condition and increased with increasing the amount of hot deformation in the non-recrystallization austenite region.https://journals.pan.pl/Content/125121/PDF/AMM-2022-4-39-Hwang.pdfacicular ferritehigh-strength low-alloy steelconfocal laser scanning microscopy (clsm)phase transformationin-situ observation |
| spellingShingle | Sang-In Lee Seung-Hyeok Shin Hyeonwoo Park Hansoo Kim Joonho Lee Byoungchul Hwang In-Situ Observation of Acicular Ferrite Transformation in High-Strength Low-Alloy Steel Using Confocal Laser Scanning Microscopy Archives of Metallurgy and Materials acicular ferrite high-strength low-alloy steel confocal laser scanning microscopy (clsm) phase transformation in-situ observation |
| title | In-Situ Observation of Acicular Ferrite Transformation in High-Strength Low-Alloy Steel Using Confocal Laser Scanning Microscopy |
| title_full | In-Situ Observation of Acicular Ferrite Transformation in High-Strength Low-Alloy Steel Using Confocal Laser Scanning Microscopy |
| title_fullStr | In-Situ Observation of Acicular Ferrite Transformation in High-Strength Low-Alloy Steel Using Confocal Laser Scanning Microscopy |
| title_full_unstemmed | In-Situ Observation of Acicular Ferrite Transformation in High-Strength Low-Alloy Steel Using Confocal Laser Scanning Microscopy |
| title_short | In-Situ Observation of Acicular Ferrite Transformation in High-Strength Low-Alloy Steel Using Confocal Laser Scanning Microscopy |
| title_sort | in situ observation of acicular ferrite transformation in high strength low alloy steel using confocal laser scanning microscopy |
| topic | acicular ferrite high-strength low-alloy steel confocal laser scanning microscopy (clsm) phase transformation in-situ observation |
| url | https://journals.pan.pl/Content/125121/PDF/AMM-2022-4-39-Hwang.pdf |
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