Effects of cerium addition on the microstructure, mechanical properties and strain hardening behavior of TWIP steel Fe-18Mn-0.6C

Zhong, Lingqiang; Wang, Zhigang; Luo, Quanshun; Liu, Weizhen

doi:10.1016/j.matchar.2021.111626

Materials Characterization

2022

DOI: 10.1016/j.matchar.2021.111626

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Effects of cerium addition on the microstructure, mechanical properties and strain hardening behavior of TWIP steel Fe-18Mn-0.6C

Lingqiang Zhong

Zhigang Wang

Quanshun Luo

et al.

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Cited by 18 publications

References 49 publications

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Improvement of Microstructure and Mechanical Properties of Hot‐Formed Steel with Ce Addition

Du,

Liu,

Liu

et al. 2024

steel research int.

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In this article, the effect of Ce element on the microstructure and mechanical properties was studied by Ce addition to the hot‐formed steel. Scanning electron microscope and energy dispersive spectrometer (SEM‐EDS) was used to analyze the improvement effect of Ce on inclusions and the effect of inclusions on fracture behavior; Electron back scattering diffractometer (EBSD) was used to analyze the refinement and strengthening effect of Ce on martensitic grains; transmission electron microscope (TEM) and high resolution transmission electron microscope (HRTEM) was used to analyze the microstructure strengthening effect and microalloying effect of solid solution Ce in hot‐formed steel. Through a systematic analysis of mechanical properties and microstructure, the mechanism of Ce enhances the strength and elongation of hot‐formed steel was clarified. Besides, this work provides a research basis for further improving the safety and machinability of hot‐formed steel.

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Improvement of Microstructure and Mechanical Properties of Hot‐Formed Steel with Ce Addition

Du,

Liu,

Liu

et al. 2024

steel research int.

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Effect of Rare Earth Ce on Structure and Properties in 7CrSiMnMoV Die Steel Castings

Long,

Li,

Zeng

et al. 2024

steel research int.

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In this study, rare earth (RE) Ce is used to modify the interaction between atoms in 7CrSiMnMoV die steel castings. The tensile properties are performed, and strengthening mechanism are analyzed by investigated fracture surface, and microstructure by optical microscopy (OM) and scanning electron microscope‐energy dispersive spectrometer (SEM‐EDS). And ab initio molecular dynamics (AIMD) is used to simulate the effect of the Ce element on the local atomic structure of the FeCeC system alloy steel. The results indicate the strength can increase from 722.55 to 1074.27 MPa, and the elongation can increase from 24.86% to 44.22% with a RE Ce concentration of 0.009%. It is attributed to that doping of Ce can inhibit the formation of network eutectic cementite, refine the lamellar spacing of pearlite, and even form granular cementite and martensite structures. AIMD simulation results show that C atoms tend to be surrounded by Fe, and the strong chemical bonds of FeC make the Fe‐centered C more stable with an increase in RE Ce concentration. And doping Ce can introduce new local topological and chemical orderings such that the FeCFe triplets predominantly form small and big angles shifting from near 75° and 136° to 47° and 81°, respectively.

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Enhancing the strength and plasticity of Kovar alloy without sacrificing thermal expansion properties

Zhu,

Pan,

Liu

et al. 2024

Journal of Alloys and Compounds

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Effects of cerium addition on the microstructure, mechanical properties and strain hardening behavior of TWIP steel Fe-18Mn-0.6C

Cited by 18 publications

References 49 publications

Improvement of Microstructure and Mechanical Properties of Hot‐Formed Steel with Ce Addition

Improvement of Microstructure and Mechanical Properties of Hot‐Formed Steel with Ce Addition

Effect of Rare Earth Ce on Structure and Properties in 7CrSiMnMoV Die Steel Castings

Enhancing the strength and plasticity of Kovar alloy without sacrificing thermal expansion properties

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