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2023;2023 9565903.

Characterization of Retained Austenite in Advanced High-Strength Steel.

Shouhua Li, Kejian Li, Longzhu Zhang, Yi Feng, Ziquan Liu, Pengjun Cao, Bo Liu, Jiling Dong
Author Information
  1. Shouhua Li: HBIS Hansteel Technology Center, Handan, Hebei 056015, China.
  2. Kejian Li: School of Metallurgy and Materials Engineering, Chongqing University of Science & Technology, Chongqing 401331, China. ORCID
  3. Longzhu Zhang: HBIS Hansteel Technology Center, Handan, Hebei 056015, China.
  4. Yi Feng: College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China.
  5. Ziquan Liu: HBIS Hansteel Technology Center, Handan, Hebei 056015, China.
  6. Pengjun Cao: School of Metallurgy and Materials Engineering, Chongqing University of Science & Technology, Chongqing 401331, China.
  7. Bo Liu: School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China.
  8. Jiling Dong: School of Metallurgy and Materials Engineering, Chongqing University of Science & Technology, Chongqing 401331, China. ORCID
PMID: 37101707 DOI: 10.1155/2023/9565903

Abstract

The retained austenite (RA) in advanced high-strength steels directly affects their plasticity. It is very important for the accurate characterization of their content and types. This paper prepared three specimens with three different Mn contents (1.0%, 1.4%, and 1.7%) that are used to obtain high-strength steel by ultrafast cooling heat treatment. The volume content and distribution of the RA were analysed by an X-ray Debye ring measurement system, electron backscatter diffraction (EBSD), and transmission electron microscopy (TEM). In addition, the mechanical tensile test provided the tensile properties and elongation of three specimens. It was finally concluded that when the content of Mn increased, the island-type and thin film-type RA both increased, which may effectively improve the plasticity of the martensitic steels.

References

  1. Acta Crystallogr A Found Adv. 2017 Mar 1;73(Pt 2):115-123 [PMID: 28248660]
  2. Scanning. 2022 Feb 24;2022:4040800 [PMID: 35282565]
Journal Article

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