Multiphase Crystallography in the Nucleation of Intragranular Ferrite on MnS+V(C, N) Complex Precipitate in Austenite

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概要

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• Crystallographic orientation relationships between intragranular ferrites, the MnS+V(C, N) complex precipitates acting as ferrite nucleation sites, and austenite matrix were studied in Fe-Mn-C alloys by scanning electron and transmission electron microscopy. VC holds a cube-cube orientation relationship (‹001›γ// ‹001›VC) when it is formed directly within austenite grains in an Fe-12Mn-0.8C-0.3V alloy. When VC precipitates nucleate on incoherent MnS particles dispersed in austenite, there is no specific orientation relationship between the three phases. Intragranular ferrite idiomorphs nucleating on the MnS+V(C, N) complex precipitate in austenite in Fe-1.5Mn-0.2C and Fe-2Mn-0.2C alloys often hold the Baker-Nutting orientation relationship ((001)α//(001)V(C, N), [110]α//[100]V(C, N)). Although several irrational ferrite/V(C, N) orientation relationships were observed, misorientation for either low-index planes or directions are relatively small between ferrite and V(C, N) for those relationships. The orientation relationships between intragranular ferrite and austenite were estimated by examining the misorientations between the ferrite and the neighboring martensite lathes from the Kurdjumov-Sachs inter-variant relationships. There is no specific orientation relationship between the intragranular ferrite idiomorph and the austenite matrix because of the low-energy orientation relationships between ferrite and V(C, N).

• 社団法人 日本鉄鋼協会の論文
• 2003-12-15

著者

• MAKI T.

  Department of Materials Science and Engineering, Kyoto University

• Furuhara T.

  Department Of Materials Science And Engineering Kyoto University

• Miyamoto G.

  Kyoto Univ.

• FURUHARA T.

  Institute for Materials Research, Tohoku University

• MAKI T.

  Kyoto University

• Furuhara T

  Institute For Materials Research Tohoku University

• SHINYOSHI T.

  Kyoto University

• YAMAGUCHI J.

  Kyoto University

• SUGITA N.

  Kyoto University

• KIMURA N.

  Kyoto University

• TAKEMURA N.

  Kyoto University

• Furuhara T.

  Department Of Material Science And Engineering Kyoto University

• Maki T

  Kyoto University

• Sugita N

  Kyoto University

関連論文

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• Effect of transformation temperature and C content on the crystallographic feature of upper bainite
• Comparison of the dislocation substructure between the cold-rolled lath martensite and equiaxed ferrite in IF steel
• Multiphase Crystallography in the Nucleation of Intragranular Ferrite on MnS+V(C, N) Complex Precipitate in Austenite
• Nucleation of Proeutectoid Ferrite on Complex Precipitates in Austenite
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• Deformation Microstructure and Tensile Strength of Cold Rolled Pearlitic Steel Sheets
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• Control of Cementite Precipitation in Lath Martensite by Rapid Heating and Tempering
• Ultra-fine (α+θ) Duplex Structure Formed by Cold Rolling and Annealing of Pearlite
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• Dislocation Density within Lath Martensite in Fe-C and Fe-Ni Alloys
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