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Deformation induced martensitic transformation during tensile or compressive deformation of the high-carbon bainitic steel (0.62wt%C-2.02%Si-0.23%Mn-1.01%Cr-Fe) was studied. The microstructure before the deformation was bainite with the retained austenite whose volume fraction was 35%. The tensile deformation is accompanied by more significant work hardening than that at the compression. This was due to the suppression of deformation induced martensitic transformation at the compression, which was confirmed mainly by the in situ neutron diffraction at TAKUMI, J-PARC. It was also found that the increasing lattice strain at austenite by tensile deformation retarded with the deformation-induced martensitic transformation, while this retardation was not found at the compression.

権利情報:

• In Copyright
  

キーワード: high carbon steel, bainite, retained austenite, deformation-induced martensitic transformation, tension, compression, in-situ neutron diffraction

刊行年月日: 2023-06-30

出版者: Association for Iron & Steel Technology

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研究助成金:

• JSPS 20H02488

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.33313/298/030

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更新時刻: 2024-02-01 08:55:50 +0900

MDRでの公開時刻: 2024-01-30 12:30:18 +0900