In-Situ Observation of Acicular Ferrite Transformation in High-Strength Low-Alloy Steel Using Confocal Laser Scanning Microscopy

• Autorzy: Lee Sang-In , Shin Seung-Hyeok , Park Hyeonwoo , Kim Hansoo , Lee Joonho , Hwang Byoungchul

Identyfikatory

DOI

10.24425/amm.2022.141081

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

acicular ferrite; high-strength low-alloy steel; confocal laser scanning microscopy; CLSM; phase transformation; in-situ observation

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2022
• Tom: Vol. 67, iss. 4
• Strony: 1497--1501
• Opis fizyczny: Bibliogr. 31 poz., fot., rys., wykr.

Twórcy

autor

Lee Sang-In

• Seoul National University of Science and Technology, Department of Materials Science and Engineering, Seoul, 01811, Republic of Korea

• https://orcid.org/0000-0002-9393-7171

autor

Shin Seung-Hyeok

• Seoul National University of Science and Technology, Department of Materials Science and Engineering, Seoul, 01811, Republic of Korea

• https://orcid.org/0000-0002-0458-5806

autor

Park Hyeonwoo

• Korea University, Department of Materials Science and Engineering, Seoul, 02841, Republic of Korea

• https://orcid.org/0000-0003-2562-4656

autor

Kim Hansoo

• Korea University, Department of Materials Science and Engineering, Seoul, 02841, Republic of Korea

• https://orcid.org/0000-0002-4014-8670

autor

Lee Joonho

• Korea University, Department of Materials Science and Engineering, Seoul, 02841, Republic of Korea

• https://orcid.org/0000-0002-9464-6480

autor

Hwang Byoungchul

• Seoul National University of Science and Technology, Department of Materials Science and Engineering, Seoul, 01811, Republic of Korea

• https://orcid.org/0000-0001-6330-4747

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Uwagi

1. This study was supported by the Research Program funded by the SeoulTech (Seoul National University of Science and Technology).

2. Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).