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2012 Fiscal Year Final Research Report

Development of heat-resistant magnesium alloys with superior strength by utilizing fine lamellar microstructure

Research Project

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Project/Area Number 22560695
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Structural/Functional materials
Research InstitutionTokyo Institute of Technology (2011-2012)
Nagoya University (2010)

Principal Investigator

TERADA Yoshihiro  東京工業大学, 大学院・総合理工学研究科, 准教授 (40250485)

Project Period (FY) 2010 – 2012
Keywords高温材料 / マグネシウム合金 / クリープ変形 / 微細ラメラ組織
Research Abstract

The creep behavior of hypoeutectic Mg1-xCax (x = 2.8, 8.7, and 14.8 mass%) cast alloys was investigated at 473 K under stresses between 30 and 60 MPa. The microstructure of the alloys is characterized by the discontinuously distributed primary α-Mg phase in a continuous eutectic fine lamellar structure consisting of α-Mg and C14-Mg2Ca phases. The creep curves of the alloys exhibit three stages: a normal transient creep stage, a minimum creep rate stage and finally an accelerating stage. The decrease in creep rate during the transient stage becomes pronounced and the onset of the accelerating stage is delayed with increasing calcium concentration. The stress exponent of the minimum creep rate is four for each alloy for stresses below the yield stress. The creep of the alloys is controlled by the high-temperature climb of dislocations. The effect of the eutectic fine lamellar structure on creep strength is prominent when the volume fraction is below 50%.

  • Research Products

    (24 results)

All 2013 2012 2011 2010 Other

All Journal Article (16 results) (of which Peer Reviewed: 11 results) Presentation (7 results) Remarks (1 results)

  • [Journal Article] Plastic Deformation of the C14 Laves Phase (Fe,Ni)2Nb2013

    • Author(s)
      N.Takata, H.G.Armaki, Y.Terada, M.Takeyama, K.S.Kumar
    • Journal Title

      Scr. Mater

      Volume: 68 Pages: 615-618

    • DOI

      doi:10.1016/j.scriptamat.2012.12.019

    • Peer Reviewed
  • [Journal Article] Fe-20Cr-30Ni-2Nbオース テナイト系耐熱鋼の1073Kにおける水蒸気雰囲気下でのクリープ特性2013

    • Author(s)
      味噌作裕, I.Tarigan, 高田尚記, 寺田芳弘,竹山雅夫
    • Journal Title

      耐熱金属材料123委員会研究報告

      Volume: 54 Pages: 7-17

  • [Journal Article] Precipitation Kinetics and Morphology of Fe2Nb TCP Phase and Ni3Nb GCP Phase in Novel Fe-Cr-Ni-Nb Austenitic Heat Resistant Steels at 1073K2013

    • Author(s)
      F.Gao, N.Takata, Y.Terada, M.Takeyama
    • Journal Title

      耐熱金属材料123委員会研究報告

      Volume: 54 Pages: 19-31

  • [Journal Article] Mg-Ca二元系亜共晶合金における高温クリープ挙動2012

    • Author(s)
      柴山淳史, 寺田芳弘, 村田純教, 森永正彦
    • Journal Title

      日本金属学会誌

      Volume: 76 Pages: 251-255

    • URL

      http://www.jim.or.jp/journal/j/76/04/251-255.html

    • Peer Reviewed
  • [Journal Article] Creep Properties of Binary Mg-Ca Cast Alloys at 473K2012

    • Author(s)
      Y.Shioda, Y.Terada, Y.Murata
    • Journal Title

      Mater. Sci. Technol. Jpn

      Volume: 49 Pages: 132-138

    • Peer Reviewed
  • [Journal Article] Dislocation Movements during High-Temperature Creep in Die-Cast Mg-Al-Ca Alloys, Creep and Fracture of Engineering Materials and Structures2012

    • Author(s)
      Y.Terada, Y.Murata, T.Sato, M.Morinaga
    • Journal Title

      The Japan Institute of Metals, Sendai

      Pages: 1-4

    • Peer Reviewed
  • [Journal Article] Fe-Ni-Nb-Mo4元系におけるγ-Fe/TCP/GCP相間の高温における相平衡と元素分配2012

    • Author(s)
      鈴木洸介, 高田尚記, 寺田芳弘, 竹山雅夫
    • Journal Title

      耐熱金属材料123委員会研究報告

      Volume: 53 Pages: 205-215

  • [Journal Article] Creep Characteristics of a Hypoeutectic Mg-Ca Binary Alloy with a Near-Fully Lamellar Microstructure2011

    • Author(s)
      Y.Terada, M.Tsukahara, A.Shibayama, Y.Murata, M.Morinaga
    • Journal Title

      Scr. Mater

      Volume: 64 Pages: 1039-1042

    • DOI

      doi:10.1016/j.scriptamat.2011.02.016

    • Peer Reviewed
  • [Journal Article] Assessment of Creep Rupture Life of Die-Cast Mg-Al-Mn Alloy2011

    • Author(s)
      Y.Terada, Y.Murata, T.Sato, M.Morinaga
    • Journal Title

      Mater. Sci. Technol. Jpn

      Volume: 48 Pages: 34-138

    • Peer Reviewed
  • [Journal Article] Analysis of Creep Rupture Life of Mg-Al-Mn Alloy Produced byDie-Casting2011

    • Author(s)
      Y.Terada, Y.Murata, T.Sato, M.Morinaga
    • Journal Title

      Mater. Chem. Phys.

      Volume: 128 Pages: 32-34

    • DOI

      doi:10.1016/j.matchemphys.2011.03.030

    • Peer Reviewed
  • [Journal Article] Ni基鍛造合金におけるγ'相の組織安定性に及ぼす格子ミスフィットの影響2011

    • Author(s)
      泉幸貴, 寺田芳弘, 竹山雅夫
    • Journal Title

      耐熱金属材料123委員会研究報告

      Volume: 52 Pages: 363-374

  • [Journal Article] Evaluation of Dislocation Density in a Mg-Al-Mn-Ca Alloy Determined by X-ray Diffractometry and Transmission Electron Microscopy2010

    • Author(s)
      T.Shintani, Y.Murata, Y.Terada, M.Morinaga
    • Journal Title

      Mater. Trans

      Volume: 51 Pages: 1067-1071

    • DOI

      doi:10.2320/matertrans.M2010021

    • Peer Reviewed
  • [Journal Article] Assessment of Creep Rupture Life of Heat Resistant Mg-Al-Ca Alloys2010

    • Author(s)
      Y.Terada, T.Sato
    • Journal Title

      J. Alloys Comp

      Volume: 504 Pages: 261-264

    • DOI

      doi:10.1016/j.jallcom.2010.05.108

    • Peer Reviewed
  • [Journal Article] Creep Behavior of Hypoeutectic Mg-Ca Binary Alloys2010

    • Author(s)
      A.Shibayama, Y.Terada, Y.Murata, M.Morinaga
    • Journal Title

      Mater. Trans

      Volume: 51 Pages: 2284-2288

    • DOI

      doi:10.2320/matertrans.M2010201

    • Peer Reviewed
  • [Journal Article] X線プロファイル解析および透過型電子顕微鏡によるMg-Al-Mn-Ca合金の転位密度測定2010

    • Author(s)
      新谷剛志, 村田純教, 寺田芳弘, 森永正彦
    • Journal Title

      日本金属学会誌

      Volume: 74 Pages: 806-810

    • URL

      http://www.jim.or.jp/journal/j/74/12/806-810.html

    • Peer Reviewed
  • [Journal Article] Fe-Crの相互拡散に及ぼす第三元素の効果2010

    • Author(s)
      杉岡真伍, 山下浩司, 寺田芳弘, 村田純教
    • Journal Title

      耐熱金属材料123委員会研究報告

      Volume: 51 Pages: 211-217

  • [Presentation] 鍛造Ni基超合金Inconel718における組織形成に及ぼす時効熱処理の影響2013

    • Author(s)
      井田駿太郎,高田尚記, 寺田芳弘, 竹山雅夫
    • Organizer
      日本鉄鋼協会
    • Place of Presentation
      東京電機大学
    • Year and Date
      2013-03-28
  • [Presentation] Ni 基鍛造合金におけるγ'相の組織形態に及ぼす格子ミスフィットの影響2012

    • Author(s)
      泉 幸貴, 寺田芳弘, 竹山雅夫
    • Organizer
      日本金属学会
    • Place of Presentation
      横浜国立大学
    • Year and Date
      20120000
  • [Presentation] 鍛造Ni基超合金におけるγ'相の組織形態と格子ミスフィット2012

    • Author(s)
      久澤大夢, 泉幸貴, 高田尚記, 寺田芳 弘, 竹山雅夫
    • Organizer
      日本鉄鋼協会
    • Place of Presentation
      愛媛大学
    • Year and Date
      2012-09-17
  • [Presentation] Ni基鍛造合金InconelX-750におけるγ'相の析出形態と格子ミスフィット2012

    • Author(s)
      久澤大夢, 泉幸貴, 寺田芳弘, 竹山雅夫
    • Organizer
      日本熱処理技術協会
    • Place of Presentation
      東京工業大学
    • Year and Date
      2012-06-14
  • [Presentation] 鍛造Ni基超合金におけるγ'相の組織形態と格子ミスフィット2012

    • Author(s)
      久澤大夢, 泉幸貴, 寺田芳弘, 竹山雅夫
    • Organizer
      日本鉄鋼協会
    • Place of Presentation
      横浜国立大学
    • Year and Date
      2012-03-29
  • [Presentation] Ni基鍛造合金におけるγ'相の組織安定性に及ぼす格子ミスフィットの影響2011

    • Author(s)
      泉幸貴, 寺田芳弘, 竹山雅夫
    • Organizer
      日本学術振興会耐熱金属材料第123委員会
    • Place of Presentation
      東京工業大学
    • Year and Date
      2011-11-29
  • [Presentation] Mg-Ca二元系鋳造合金の高温クリープ強度に及ぼすAl添加の影響2010

    • Author(s)
      柴山淳史, 寺田芳弘, 村田純教, 森永彦
    • Organizer
      学生による材料フォーラム
    • Place of Presentation
      名古屋大学
    • Year and Date
      2010-11-25
  • [Remarks]

    • URL

      http://www.materia.titech.ac.jp/terada.html

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Published: 2014-08-29   Modified: 2014-09-05  

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