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Research on Microstructure Control and Improvement of Steel Seets Produced by Continuous Strip Casting Process

Research Project

Project/Area Number 04555173
Research Category

Grant-in-Aid for Developmental Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 金属材料(含表面処理・腐食防食)
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

MAKI Tadashi  Kyoto University, Faculty of Eng., Professor, 工学部, 教授 (10026247)

Co-Investigator(Kenkyū-buntansha) UEMATU Yoshihiro  Nisshin Steel Co., Ltd., Steel R&D Laboratories, Manager, 鉄鋼研究所・腐食防食研究室, 室長
FURUHARA Tasashi  Kyoto University, Faculty of Eng., Research Associate, 工学部, 助手 (50221560)
TSUZAKI Kaneaki  Kyoto University, Faculty of Eng., Associate Professor, 工学部, 助教授 (40179990)
Project Period (FY) 1992 – 1994
Project Status Completed (Fiscal Year 1994)
Budget Amount *help
¥7,600,000 (Direct Cost: ¥7,600,000)
Fiscal Year 1994: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1993: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1992: ¥6,400,000 (Direct Cost: ¥6,400,000)
Keywordscontinuous strip casting / ferritic stainless steel / solidified structure / cold rolling / recrystallization / microstructer control / β型チタン合金 / 時効析出 / インバー合金 / ステンレス鋼
Research Abstract

The following experimental stuies have been carried out to examine the microstructre control of recrystallization structure of solidified columnar crystals in a 19%Cr ferritic stainless steel.
[1] Effects of Rolling Reductiion and Annealing Temperature on Recrystallization Structure
Reduction of cold-rolling was altered as 50%, 70%, and 90%, whereas subsequent annealing temperature was chainged from 700 to 1000゚C.Mirostructural observations and X-ray pole figure measurements were performed on specimens with different rolling and annealing conditions. The results showed that a favorable recrystallization structure with fine and uniformgrain size cannot be obtained simply by increasing rolling reduction or by increasing annealing temperature.
[2] Improvement of Recrystallization Structure by the Repetition of Rolling and Annealing
The orientations of recrystallized grains in a (001)[110]initially-oriented columnar crystal are random although such an oriented columanr crystal exhibits a very low recrystallization rate and a coarse recrystallization structure. Taking into account the above fact, the repetition of cold-rolling and annealing was applied to a columnar crystal specimen in order to improve its recrystallization structure. The result showed that a fine and uniform recrystallization structure can be achieved by two cycles of the repetition of 70% cold rolling and 973K annealing.

Report

(4 results)
  • 1994 Annual Research Report   Final Research Report Summary
  • 1993 Annual Research Report
  • 1992 Annual Research Report
  • Research Products

    (11 results)

All Other

All Publications (11 results)

  • [Publications] N. Tsuji: "Effects of Rolling Reduction and Aumealing Temperature on the Reaystalligation Structure of Solidified Columnar Crystals in a 19%Cr Ferritic Stainlass Steel" I. S. I. J. International. 34. 1008-1017 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] N. Tsuji: "Effects of Initial Orientation on the Cold Rolling Behavior of Solidified Columnar Crystals in an Fe-36%Ni Austenitic Alloy" Acta Metall. Mater.43. 743-754 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] N. Tsuji: "Recrystallization of Solidified Columnar Crystals in an Fe-36%Ni Austenitic Alloy" Acta Metall. Mater.43. 755-768 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] N.Tsuji: "Effects of roling reduction and annealing temperature on the recrystallization structure of solidified columnar crystals in a 19%Cr ferritic stainless steel." ISIJ international. 34. 1008-1017 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] N.Tsuji: "Effects of initial orientation on the cold rolling behavior of solidified columnar crystals in an Fe-36%Ni austenitic alloy." Acta Metall.Mater.43. 743-754 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] N.Tsuji: "Recrystallization of solidified columnar crystals in an Fe-36%Ni austenitic alloy." Acta Metall.Mater.43. 755-768 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] T.Maki: "Effects of Rolling Reduction and Annealing Temperature on the Recrystallization Structure of Solidified Columnar Crystals in a 19%Cr Ferritic Stainless Steel." ISIJ International. 34. 1008-1017 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] T.Maki: "Effect of Initial Orientation on the Cold-Rolling Behavior of Solidified Coumner Crystals in an Fe-36%Ni Austenitic Alloy." Acta Metall.Mater.43. 743-754 (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] T.Maki: "Recrystallization of Solidified Columnar Crystals in an Fe-36%Ni Austenitic Alloy." Acta Metall.Mater.43. 755-768 (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] N.Tsuji: "Effect of Initial Orientation on the Recrystallization Behavior of Solidified Columnar Crystals in a 19%Cr Ferritic Stainless Steel." ISIJ International. 33. 783-792 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] T.Furuhara: "Effect of Prior Cold Rolling on α Precipitation in a Ti-15V-3Cr-3Sn-3Al Alloy." Proc.3rd Japan International SAMPE Symposium. 1709-1716 (1993)

    • Related Report
      1993 Annual Research Report

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Published: 1992-04-01   Modified: 2016-04-21  

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