Microstructure Evolutions at Severely-deformed Austenite/Martensite Interfaces of a Layer-integrated Steel

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概要

• 論文の詳細を見る

• The microstructure evolution at interfaces of a layer-integrated steel sheet artificially constructed by ductile austenitic stainless (SUS304) and high-strength martensitic (SCM415) steel layers, which were bonded through a cold-rolling and a subsequent annealing at 1000°C, has been investigated using scanning transmission electron microscopy (STEM) combined with energy dispersive X-ray spectroscopy (EDS). We find that a significant microstructural reconstruction around the SUS304/SCM415 interface has been accomplished during a short-time annealing followed by water-quenching; the resultant microstructures are found to consist of recrystallized austenite and lath martensite grains for the SUS304 and SCM415 layers, respectively. Interestingly, the original SUS304/SCM415 interface appears to migrate and extend into the SUS304 side, an occurrence of which can be reasonably explained by the martensitic transformation across the composition-gradient interface during quenching. These microstructural evolutions fairly account for a microscopic mechanism on how hetero-interface bonding can be achieved via simple cold-rolling/annealing procedures.

• 2009-09-15

著者

• Hayashi Taisuke

  Department of Materials Science & Engineering, The University of Tokyo

• Abe Eiji

  Department of Materials Science & Engineering, The University of Tokyo

• Hara T

  Steel Research Center National Institute For Materials Science

• Hara T

  National Inst. For Materials Sci. Tsukuba Jpn

• Hara Toru

  Advanced Electron Microscopy Group National Institute For Materials Science (nims)

• Hara Toru

  Department Of Materials Science And Engineering Teikyo University

• Hara Toru

  National Institute For Materials Science

• Hara Toru

  Steel Research Center National Institute For Materials Science

• Hara Toru

  National Institute For Material Science

• Hara Toru

  Structural Materials Research Center Nims

• IKUHARA Yuichi

  Institute of Engineering Innovation, University of Tokyo

• Abe Eiji

  Department Of Materials Engineering The University Of Tokyo

• Ikuhara Yuichi

  Institute Of Engineering Innovation School Of Engineering The University Of Tokyo

• Abe Eiji

  Dep. Of Materials Sci. & Engineering The Univ. Of Tokyo

• Hayashi Taisuke

  Dep. Of Materials Sci. & Engineering The Univ. Of Tokyo

• Ikuhara Yuichi

  Institute Of Engineering Innovation The University Of Tokyo

• Hayashi Taisuke

  Department Of Materials Analysis Cirs Shimane University

• IKUHARA Yuichi

  Institute of Engeering Innovation, School of Engineering, The University of Tokyo

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