Ductile Fe-Based BMGs with High Glass Forming Ability and High Strength

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著者

    • MA Chaoli
    • Department of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics
    • ZHANG Tao
    • Department of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics

抄録

Fe-based bulk metallic glasses (BMGs) with high glass forming ability (GFA) and excellent mechanical properties were synthesized in Fe-Ni-Mo-P-C-B alloy system by copper mold casting. Results show that the glass forming ability of Fe<SUB>74−<I>x</I></SUB>Ni<I><SUB>x</SUB></I>Mo<SUB>6</SUB>P<SUB>10</SUB>C<SUB>7.5</SUB>B<SUB>2.5</SUB> alloys increases first and then decreases as Ni content, <I>x</I>, increases from 0 to 11.1 at%, with its climax being reached at <I>x</I> is between 3.7 and 5.0. Analyses indicate that either Δ<I>T<SUB>x</SUB></I> and Δ<I>H</I><SUB>endo</SUB> or <I>T</I><SUB>rg</SUB> and γ can not illustrate the GFA of obtained alloys solely. With increasing Ni element in Fe<SUB>74−<I>x</I></SUB>Ni<I><SUB>x</SUB></I>Mo<SUB>6</SUB>P<SUB>10</SUB>C<SUB>7.5</SUB>B<SUB>2.5</SUB> alloys, the yield strength and Vicker's mircrohardness decline, while the plasticity increases, which implies that enhancing plasticity by adjusting the composition of alloys is followed with the loss of some strength. Serrated flow characteristics on the compressive stress-strain curves is observed for Fe<SUB>74−<I>x</I></SUB>Ni<I><SUB>x</SUB></I>Mo<SUB>6</SUB>P<SUB>10</SUB>C<SUB>7.5</SUB>B<SUB>2.5</SUB> as <I>x</I>=11.1 at%, which is considered to relate to its lowest glass transition temperature. These mechanical properties of BMGs are illustrated with bonding nature between the constituent elements.

収録刊行物

  • Materials transactions  

    Materials transactions 49(2), 231-234, 2008-02-01 

    The Japan Institute of Metals and Materials

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各種コード

  • NII論文ID(NAID)
    10021143929
  • NII書誌ID(NCID)
    AA1151294X
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13459678
  • NDL 記事登録ID
    9354164
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z53-J286
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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