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PRODUCTION OF SENSITIZATION-RESISTANT MATERIALS BY TWIN-INDUCED GRAIN BOUNDARY ENGINEERING

Research Project

Project/Area Number 12555193
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field Material processing/treatments
Research InstitutionTohoku University

Principal Investigator

KOKAWA Hiroyuki  GRADUATE SCHOOL 0F ENGINEERING, PROFESSOR, 大学院・工学研究科, 教授 (10133050)

Co-Investigator(Kenkyū-buntansha) SATO Susumu  KAWASAKI STEELCORPORATION, SENIOR RESEARCHER, 技術研究所, 部門長(研究職)
SATO S. Yutaka  GRADUATE SCHOOL OF ENGINEERING,RESEARCH ASSOCIATE, 大学院・工学研究科, 助手 (00292243)
WATANABE Tadao  GRADUATE SCHOOL OF ENGINEERING, PROFESSOR, 大学院・工学研究科, 教授 (40005327)
YASUDA Koichi  KAWASAKI STEEL CORPORATION, SENIOR RSEARCHER, 技術研究所, 主任部員(研究職)
Project Period (FY) 2000 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥13,600,000 (Direct Cost: ¥13,600,000)
Fiscal Year 2002: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2001: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2000: ¥11,500,000 (Direct Cost: ¥11,500,000)
Keywordsgrain boundary engineering / grain boundary structure / stainless steel / sensitization / intergranular corrosion / intergranular precipitation / thermomechanical treatment / annealing twin / オーステナイト / クロム炭化物 / クロム欠乏
Research Abstract

Sensitization by chromium depletion due to chromium carbide precipitation at grain boundaries in austenitic stainless steels can not be prevented perfectly only by previous conventional techniques, such as reduction of carbon content, stabilization-treatment, local solution-heat-treatment, etc. Recent studies on grain boundary structure have revealed that the sensitization depends strongly on grain boundary character and atomic structure, and that low energy grain boundaries such as coincidence-site-lattice(CSL) boundaries have strong resistance to intergranular corrosion. The concept of "grain boundary design and control" has been developed as grain boundary engineering (GBE). GBEed materials are characterized by high frequencies of CSL boundaries which are resistant to intergranular deterioration of materials, such as intergranular corrosion. A thermomechanical treatment was hid to improve the resistance to the sensitization by GBE. A type 304 austenitic stainless steel was cold-roll … More ed and solution-heat-treated, and then sensitization-heat-treated. The grain boundary character distribution was examined by orientation imaging microscopy (OIM). The intergranular corrosion resistance was evaluated by electrochemical potentiokinetic reactivation (EPR) and ferric sulfate-sulfuric acid tests. The sensitivity to intergranular corrosion was reduced by the thermomechanical treatment and indicated a minimum at a small roll-reduction. The frequency of CSL boundaries indicated a maximum at the small reduction. The ferric sulfate-sulfuric acid test showed much smaller corrosion rate in the thermomechanical-treated specimen than in the base material. A high density of annealing twins were observed in the thermomechanical -treated specimen. The results suggest that the thermomechanical treatment can introduce low energy segments in the grain boundary network by annealing twins and can arrest the percolation of intergranular corrosion from the surface. The effects of carbon content and other minor elements on optimization in grain boundary character distribution (GBCD) and thermomechanical parameters wore also examined during GBE. Less

Report

(4 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • Research Products

    (36 results)

All Other

All Publications (36 results)

  • [Publications] Hiroyuki Kokawa: "Grain-Boundary Structure and Precipitation in Sensitized Austenitic Stainless Steel"JOM (Journal of The Minerals, Metals & Materials Society). 52・7. 34-37 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hiroyuki Kokawa: "Arrest of Weld Decay of Austenitic Stainless Steel by Grain Boundary Engineering"Proceedings of International Workshop on Fundamental Study and Its Application of Intelligent Nano and Mesoscopic Structured Materials by Field Control, edited by S. Chonan et al. Sendai, Japan. 91-105 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hiroyuki Kokawa: "Effect of Grain Boundary Structure on Weld Decay of 304 Austenitic Stainless Steel"Proceedings of J. J. Jonas Symposium on Thermomechanical Processing of Steel, edited by S. Yue et al., COM 2000, CIM Conference, Ottawa, Ontario, Canada. 581-593 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hiroyuki Kokawa: "Dependence of Carbide Precipitation on Grain Boundary Structure in Sensitized Austenitic Stainless Steel"Properties of Complex Inorganic Solids 2, et. by A. Meike et al., Kluwer Academic/Plenum Publishers, New York. 17-26 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Masayuki Shimada: "Arrest of Intergranular Corrosion in Austenitic Stainless Steel by Twin-Induced Grain Boundary Engineering"Proceedings of Asian Pacific Conference on Fracture And Strength '01 & International Conference on Advanced Technology In Experimental Mechanics '01, The Japan Society of Mechanical Engineers, Sendai, Japan. 2・01-203. 1036-1040 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Masayuki Shimada: "Prevention of Weld Decay of Austenitic Stainless Steel by Twin-induced Grain Boundary Engineering"Proceedings of the Seventh International Welding Symposium of Today and Tomorrow in Science and Technology of Welding and Joining, Japan Welding Society, Kobe, Japan. 2. 681-686 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Masayuki Shimada: "Optimization of grain boundary character distribution for intergranular corrosion resistant 304 stainless steel by twin-induced grain boundary engineering"Acta Materialia. 50・9. 2331-2341 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hiroyuki Kokawa: "Production of Intergranular Corrosion-Resistant Stainless Steel by Twin-Induced Grain Boundary Engineering"Proceedings of the 7th Inter-University Research Seminar on materials Science, Welding, Joining and Allied Processes, Bratislava, Slovakia, edited by P. Orszagh, ATP Technika. 5-11 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hiroyuki Kokawa: "Intergranular Corrosion-Resistant Stainless Steel by Grain Boundary Engineering"Proceedings of International Welding/Joining Conference-Korea 2002 on Intelligent Technology in Welding and Joining for the 21st Century, Gyeongju, Korea. 250-254 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hiroyuki Kokawa: "Intergranular Corrosion-Resistant Stainless Steel by Twin-Induced Grain Boundary Engineering"Annales de Chimie, Science des Materaix. 27・Suppl.1. S315-S325 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Masayuki Shimada: "Effect of Twin-induced Grain Boundary Engineering on Intergranular Corrosion in Austenitic Stainless Steel"Proceedings of the 6th International Conference on Trends in Welding Research, Georgia, USA, edited by S. A. David et al.,ASM International. 93-98 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hong Yun Bi: "Suppression of chromium depletion by grain boundary structural change during twin-induced grain boundary engineering of 304 stainless steel"Scripta Materialia. (投稿中). (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hiroyuki Kokawa: "Grain-Botrndary Structum arid Precipitin in Sensitized Austenitic Stainless Steel"JOM (Journal of The Minerals, Metals &Materials Society). 52-7. 34-37 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hiroyuki Kokawa: "Arrest of Weld Decay of Austenitic Stainless Steel by Grain Boundary Engineering"Proceedings or International Workshop on Fundamental Study and Its Application of Intelligent Nano and Mesoscopic Structured Materials by Field Control, edited by S. Chonan et al. Sendai, Japan. 91-105 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hirouchi Kokawa: "Effect of Grain Boundary Structure on Weld Decay of 304 Austenitic Stainless Steel"Proceedings of J. J. Jonas Symposium on Thermomechanical Processing of Steel, edited by S. Yue at al., COM 2000, CIM Conference, Ottawa, Ontario, Canada. 581-593 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hiroyuki Kokawa: "Dependence of Carbide Precipitation on Grain Boundary Structure in Sensitized Austenitic Stainless Steel"Properties of Complex Inorganic Solids 2, ed. by A. Meike et al., Kluwer Academic/Plenum Publishers, New York. 17-26 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Masayuki Shimada: "Arrest of Intergranular Corrosion in Austenitic Stainless Steel by Twin-Induced Grain Boundary Engineering"Proceedings of Asian Pacific Conference on Fracture And Strength '01 & International Conference on Advanced Technology In Experimental Mechanics '01 , The Japan Society of Mechanical Engineers, Sendai, Japan. 2-01-203. 1036-1040 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Masayuki Shimada: "Prevention of Weld Decay of Austenitic Stainless Steel by Twin-induced Gram Boundary Engineering"Proceedings of the Seventh International Welding Symposium on Today and Tomorrow in Science and Technology of Welding and Joining, Japan Welding Society, Kobe, Japan. 2. 681-686 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Masayuki Shimada: "Optimization of grain boundary character distribution for intergranular corrosion resistant 304 stainless steel by twin-induced grain boundary engineering"Acta Materialia. 50-9. 2331-2341 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hiroyuki Kokawa: "Production of Intergranular Corrosion-Resistant Stainless Steel by Twin-Induced Grain Boundary Engineering"Proceedings of the 7th Inter-University Research Seminar on Materials Science, Welding, Joining and Allied Processes, Bratislava, Slovakia, edited by P. Orszagh, ATP Technika. 5-11 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hiroyuki Kokawa: "Intergranular Corrosion-Resistant Stainless Steel by Grain Boundary Engineering"Proceedings of International Welding/Joining Conference-Korea 2002 on Intelligent Technology in Wedding and Joining for the21st Century, Gyeongju, Korea. 250-254 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hiroyuki Kokawa: "Intergranular Corrosion-Resistant Stainless Steel by Twin-Induced Grain Boundary Engineering"Annales de Chimie, Science des Materaix, 27-Sippl.. 1. S315-S325 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Masayuki Shimada: "Effect of Twin-induced Grain Boundary Engineering on Intergranular Corrosion in Austenitic Stainless Steel"Proceedings of tee 6th International Conference on Trends in Welding Research, Georgia, USA, edited by S. A. David et al., ASM International. 93-96 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hong Yun Bi: "Suppression of chromium depletion by grain boundary structural change during twin-induced grain boundary engineering of 304 stainless steel"Scripta Materialia, 2003 submitted. (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Masayuki Shimada: "Optimization of grain boundary character distribution for intergranular corrosion resistant 304 stainless steel by twin-induced grain boundary engineering"Acta Materialia. 50・9. 2331-2341 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Hiroyuki Kokawa: "Production of Intergranular Corrosion-Resistant Stainless Steel by Twin-Induced Grain Boundary Engineering"Proceedings of the 7^<th> Inter-University Research Seminar on Materials Science, Welding, Joining and Allied Processes, Bratislava, Slovak University of Technology, Slovakia, Edited by P.Orszagh, ATP Technika. 5-11 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Hiroyuki Kokawa: "Intergranular Corrosion-Resistant Stainless Steel by Grain Boundary Engineering"Proceedings of International Welding/Joining Conference-Korea 2002 on Intelligent Technology in Welding and Joining for the 21^<st> Century, Gyeongju, Koera. 250-254 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Hiroyuki Kokawa: "Intergranular Corrosion-Resistant Stainless Steel by Twin-Induced Grain Boundary Engineering"Annales de Chimie, Science des Materaix. 27・suppll. S315-S325 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Masayuki Shimada: "Arrest of Intergranular Corrosion in Austenitic Stainless Steel by Twin-Induced Grain Boundary Engineering"Proceedings of Asian Pacific Conference on Fracture And Strength '01 & International Conrence on Advanced Technology In Experimental Mechanics '01, The Japan Society of Mechanical Engineers, Sendal, Japan, 2001, No.01-203. 2. 1036-1040 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Masayuki Shimada: "Prevention of Weld Decay of Austenitic Stainless Steel by Twin-induced Grain Boundary Engineering"Proceedings of the Seventh International Welding Symposium on Today and Tomorrow in Science and technology of Welding and Joining, Japan Welding Sociely. 2. 681-686 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Hiroyuki Kokawa: "Intergranular Corrosion-Resistant Stainless Steel by Twin-Induced Grain Boundary Engineering"Annales de Chimie, Science des Materaix. (印刷中). (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Masayuki Shimada: "Optimization of grain boundary character distribution for intergranular corrosion resistant 304 stainless steel by twin-induced grain boundary engineering"Acta Materialia. (印刷中). (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Hiroyuki Kokawa: "Grain-Boundary Structure and Precipitation in Sensitized Austenitic Stainless Steel"Journal of The Minerals, Metals & Materials Society. 52・7. 34-37 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Hiroyuki Kokawa: "Arrest of Weld Decay of Austenitic Stainless Steel by Grain Boundary Engineering"Proceedings of International Workshop on Fundamental Study and Its Application of Intelligent Nano and Mesoscopic Structured Materials by Field Control, edited by S. Chonan,J.Tani, T.Watanabe and Y.Yamazaki,ISRE 2000. 91-105 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Hiroyuki Kokawa: "Effect of Grain Boundary Structure on Weld Decay of 304Austenitic Stainless Steel"Proceedings of J.J.Jonas Symposium on Thermomechanical Processing of Steel, edited by S.Yue and E.Essadiqi, COM 2000. 581-593 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Hiroyuki Kokawa: "Dependence of Carbide Precipitation on Grain Boundary Structure in Sensitized Austenitic Stainless Steel"Properties of Complex Inorganic Solids 2,ed.by A.Meike et al.,Kluwer Academic/Plenum Publishers,New York. 17-26 (2000)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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