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Cu-modified Al2O3 scale forming austenitic heat resistant alloys

Research Project

Project/Area Number 15H04153
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Material processing/Microstructural control engineering
Research InstitutionHokkaido University (2017)
Tokyo Institute of Technology (2015-2016)

Principal Investigator

Hayashi Shigenari  北海道大学, 工学研究院, 准教授 (10321960)

Co-Investigator(Kenkyū-buntansha) 鵜飼 重治  北海道大学, 工学研究院, 特任教授 (00421529)
Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2015: ¥13,650,000 (Direct Cost: ¥10,500,000、Indirect Cost: ¥3,150,000)
KeywordsHeat resistant steels / Alumina forming alloy / HT oxidation / Alloy design / オーステナイト耐熱鋼 / アルミナスケール / 耐酸化性 / 銅添加 / 耐熱合金 / 高温酸化 / Cu / アルミナ皮膜形成オーステナイト系耐熱鋼 / 内部酸化 / 保護性アルミナスケール / Cu効果 / アルミナスケール形成オーステナイト系耐熱鋼
Outline of Final Research Achievements

In this study, alumina scale forming austenitic heat resistant steels, which have better producibility, workability, and high-temperature oxidation resistance was proposed. Cu addition to austenitic heat resistant steels was found to stabilize the gamma-phase and suppress formation of intermetallic compounds such as beta-NiAl. Thus higher Al addition in steels can be acceptable, which is beneficial for both production and oxidation resistance by forming alumina-scale. From the interdiffusion study, copper was found to have negative interaction with aluminum in gamma-matrix, which enhanced aluminum outward diffusion toward the steel surface. This enhanced aluminum supply from the substrate were considered to promote an exclusive alumina scale formation. Copper addition to austenitic steels shows potential for development of new heat resistant steels.

Report

(4 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • Research Products

    (2 results)

All 2017 2015

All Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] Ni-Al-Cu三元系合金の内部酸化挙動におよぼすCuの影響2017

    • Author(s)
      永島涼太 林重成 竹山雅夫
    • Organizer
      日本金属学会第160回 春期講演大会
    • Place of Presentation
      首都大学東京(東京都八王子市)
    • Year and Date
      2017-03-15
    • Related Report
      2016 Annual Research Report
  • [Presentation] Effect of Cu on High-temperature Oxidation of Alumina Forming Austenitic Fe-Ni-Cr-Al Alloys2015

    • Author(s)
      Shigenari Hayashi, Daiki Kudo, Shigeharu Ukai
    • Organizer
      EFC-WOrkshop
    • Place of Presentation
      Frankfurt, Germany
    • Year and Date
      2015-10-28
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research

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Published: 2015-04-16   Modified: 2019-03-29  

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