Ultralow-temperature superplasticity of high strength Fe–10Mn-3.5Si steel

Hyun Bin Jeong; Seok Won Choi; Seok Hyeon Kang; Young Kook Lee

doi:10.1016/j.msea.2022.143408

Ultralow-temperature superplasticity of high strength Fe–10Mn-3.5Si steel

Hyun Bin Jeong, Seok Won Choi, Seok Hyeon Kang, Young Kook Lee

Department of Materials Science and Engineering

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

7 Citations (Scopus)

Abstract

Superplastic steels with high elongations above 300% are expected to be used for manufacturing complex-shaped mechanical parts without joining. However, their practical application is difficult due to high energy consumption and surface oxidation caused by a high deformation temperature (≥873 K). Here, we propose a new high strength Fe–10Mn-3.5Si steel, which is superplastically deformed at 763 K. This steel exhibits different microstructural and deformation features from previous superplastic steels, such as single phase before deformation, coarse elongated grains, low strain rate sensitivity, and strong texture. The superplasticity of the steel results from both dislocation creep and grain boundary sliding due to dynamic reverse transformation. Because the steel has a low material cost and is produced by conventional rolling, it is suitable for practical application.

Original language	English
Article number	143408
Journal	Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
Volume	848
DOIs	https://doi.org/10.1016/j.msea.2022.143408
Publication status	Published - 2022 Jul 19

Bibliographical note

Funding Information:
This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (Grant number: NRF-2018R1D1A1A09083753 ) and the Technology Innovation Program (Alchemist Project, 20012196 , AI-based supercritical materials discovery) funded by the Ministry of Trade, Industry & Energy, Korea .

Publisher Copyright:
© 2022 Elsevier B.V.

All Science Journal Classification (ASJC) codes

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

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10.1016/j.msea.2022.143408

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title = "Ultralow-temperature superplasticity of high strength Fe–10Mn-3.5Si steel",

abstract = "Superplastic steels with high elongations above 300% are expected to be used for manufacturing complex-shaped mechanical parts without joining. However, their practical application is difficult due to high energy consumption and surface oxidation caused by a high deformation temperature (≥873 K). Here, we propose a new high strength Fe–10Mn-3.5Si steel, which is superplastically deformed at 763 K. This steel exhibits different microstructural and deformation features from previous superplastic steels, such as single phase before deformation, coarse elongated grains, low strain rate sensitivity, and strong texture. The superplasticity of the steel results from both dislocation creep and grain boundary sliding due to dynamic reverse transformation. Because the steel has a low material cost and is produced by conventional rolling, it is suitable for practical application.",

author = "Jeong, {Hyun Bin} and Choi, {Seok Won} and Kang, {Seok Hyeon} and Lee, {Young Kook}",

note = "Funding Information: This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (Grant number: NRF-2018R1D1A1A09083753 ) and the Technology Innovation Program (Alchemist Project, 20012196 , AI-based supercritical materials discovery) funded by the Ministry of Trade, Industry & Energy, Korea . Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

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AU - Jeong, Hyun Bin

AU - Choi, Seok Won

AU - Kang, Seok Hyeon

AU - Lee, Young Kook

N1 - Funding Information: This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (Grant number: NRF-2018R1D1A1A09083753 ) and the Technology Innovation Program (Alchemist Project, 20012196 , AI-based supercritical materials discovery) funded by the Ministry of Trade, Industry & Energy, Korea . Publisher Copyright: © 2022 Elsevier B.V.

PY - 2022/7/19

Y1 - 2022/7/19

N2 - Superplastic steels with high elongations above 300% are expected to be used for manufacturing complex-shaped mechanical parts without joining. However, their practical application is difficult due to high energy consumption and surface oxidation caused by a high deformation temperature (≥873 K). Here, we propose a new high strength Fe–10Mn-3.5Si steel, which is superplastically deformed at 763 K. This steel exhibits different microstructural and deformation features from previous superplastic steels, such as single phase before deformation, coarse elongated grains, low strain rate sensitivity, and strong texture. The superplasticity of the steel results from both dislocation creep and grain boundary sliding due to dynamic reverse transformation. Because the steel has a low material cost and is produced by conventional rolling, it is suitable for practical application.

AB - Superplastic steels with high elongations above 300% are expected to be used for manufacturing complex-shaped mechanical parts without joining. However, their practical application is difficult due to high energy consumption and surface oxidation caused by a high deformation temperature (≥873 K). Here, we propose a new high strength Fe–10Mn-3.5Si steel, which is superplastically deformed at 763 K. This steel exhibits different microstructural and deformation features from previous superplastic steels, such as single phase before deformation, coarse elongated grains, low strain rate sensitivity, and strong texture. The superplasticity of the steel results from both dislocation creep and grain boundary sliding due to dynamic reverse transformation. Because the steel has a low material cost and is produced by conventional rolling, it is suitable for practical application.

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Ultralow-temperature superplasticity of high strength Fe–10Mn-3.5Si steel

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

UN SDGs

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