Formation of abnormal nodular ferrite with interphase precipitation in a vanadium microalloyed low carbon steel

Zhenqiang Wang; Yongjie Zhang; Goro Miyamoto; Tadashi Furuhara

doi:10.1016/j.scriptamat.2021.113823

Formation of abnormal nodular ferrite with interphase precipitation in a vanadium microalloyed low carbon steel

Zhenqiang Wang, Yongjie Zhang, Goro Miyamoto, Tadashi Furuhara

Materials Design Division

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Abnormal nodular ferrite (NF) with vanadium carbide (VC) interphase precipitation was observed in a vanadium-microalloyed low carbon steel. The NF is characterized as a structure with a high density of low-angle boundaries, having an irrational ferrite/austenite orientation relationship (OR) with angular deviation of 15-30 ° from the exact Kurdjumov-Sachs OR with its neighboring austenite grain into which it grows. The growth of NF is substantially faster than that of normal grain boundary ferrite in the same alloy. Even in one single NF, the formation of multiple variants of VC interphase precipitation was confirmed, each of which was bordered by low-angle boundaries.

Original language	English
Article number	113823
Journal	Scripta Materialia
Volume	198
DOIs	https://doi.org/10.1016/j.scriptamat.2021.113823
Publication status	Published - 2021 Jun

Keywords

Eutectoid transformation
Ferrite
Interphase precipitation
Microalloying
Steel

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2021.113823

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title = "Formation of abnormal nodular ferrite with interphase precipitation in a vanadium microalloyed low carbon steel",

abstract = "Abnormal nodular ferrite (NF) with vanadium carbide (VC) interphase precipitation was observed in a vanadium-microalloyed low carbon steel. The NF is characterized as a structure with a high density of low-angle boundaries, having an irrational ferrite/austenite orientation relationship (OR) with angular deviation of 15-30 ° from the exact Kurdjumov-Sachs OR with its neighboring austenite grain into which it grows. The growth of NF is substantially faster than that of normal grain boundary ferrite in the same alloy. Even in one single NF, the formation of multiple variants of VC interphase precipitation was confirmed, each of which was bordered by low-angle boundaries.",

keywords = "Eutectoid transformation, Ferrite, Interphase precipitation, Microalloying, Steel",

author = "Zhenqiang Wang and Yongjie Zhang and Goro Miyamoto and Tadashi Furuhara",

note = "Funding Information: Z. Q. Wang acknowledges financial support from the National Natural Science Foundations of China (No. 52001084 ), Postdoctoral Science Foundation ( 2017T100227 ), Fundamental Research funds for the Central Universities (No. 3072019CF1012 ) and China Scholarship Council (CSC) Scholarship China. Y. J. Zhang acknowledges the Iron and Steel Institute of Japan for Research Promotion Grant ( 2019-2020 ). The authors thank Mr. Narita of the Cooperative Research and Development Center for Advanced Materials, Institute for Materials Research, Tohoku University, for his assistance with the FE-EPMA measurements, and Dr. Elango Chandiran, Dr. Lian Li and Dr. Haokai Dong for their help in experiments and data analysis. Publisher Copyright: {\textcopyright} 2021",

year = "2021",

month = jun,

doi = "10.1016/j.scriptamat.2021.113823",

language = "English",

volume = "198",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Elsevier Limited",

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TY - JOUR

T1 - Formation of abnormal nodular ferrite with interphase precipitation in a vanadium microalloyed low carbon steel

AU - Wang, Zhenqiang

AU - Zhang, Yongjie

AU - Miyamoto, Goro

AU - Furuhara, Tadashi

N1 - Funding Information: Z. Q. Wang acknowledges financial support from the National Natural Science Foundations of China (No. 52001084 ), Postdoctoral Science Foundation ( 2017T100227 ), Fundamental Research funds for the Central Universities (No. 3072019CF1012 ) and China Scholarship Council (CSC) Scholarship China. Y. J. Zhang acknowledges the Iron and Steel Institute of Japan for Research Promotion Grant ( 2019-2020 ). The authors thank Mr. Narita of the Cooperative Research and Development Center for Advanced Materials, Institute for Materials Research, Tohoku University, for his assistance with the FE-EPMA measurements, and Dr. Elango Chandiran, Dr. Lian Li and Dr. Haokai Dong for their help in experiments and data analysis. Publisher Copyright: © 2021

PY - 2021/6

Y1 - 2021/6

N2 - Abnormal nodular ferrite (NF) with vanadium carbide (VC) interphase precipitation was observed in a vanadium-microalloyed low carbon steel. The NF is characterized as a structure with a high density of low-angle boundaries, having an irrational ferrite/austenite orientation relationship (OR) with angular deviation of 15-30 ° from the exact Kurdjumov-Sachs OR with its neighboring austenite grain into which it grows. The growth of NF is substantially faster than that of normal grain boundary ferrite in the same alloy. Even in one single NF, the formation of multiple variants of VC interphase precipitation was confirmed, each of which was bordered by low-angle boundaries.

AB - Abnormal nodular ferrite (NF) with vanadium carbide (VC) interphase precipitation was observed in a vanadium-microalloyed low carbon steel. The NF is characterized as a structure with a high density of low-angle boundaries, having an irrational ferrite/austenite orientation relationship (OR) with angular deviation of 15-30 ° from the exact Kurdjumov-Sachs OR with its neighboring austenite grain into which it grows. The growth of NF is substantially faster than that of normal grain boundary ferrite in the same alloy. Even in one single NF, the formation of multiple variants of VC interphase precipitation was confirmed, each of which was bordered by low-angle boundaries.

KW - Eutectoid transformation

KW - Ferrite

KW - Interphase precipitation

KW - Microalloying

KW - Steel

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JF - Scripta Materialia

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Formation of abnormal nodular ferrite with interphase precipitation in a vanadium microalloyed low carbon steel

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