Deformation and Microstructure of Ti-14Mo Alloy in Over Aged State

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Deformation and microstructure were investigated on Ti-14 mass%Mo alloy in over aged state using the duplex aging method. In the over aged state only hardness decreased in spite of no change in both size and composition of ω phase. Though the ω phase aged at 623 K for 1×10<SUP>6</SUP> s had the maximum hardness and resulted in the brittle fracture through ω→β″ transformation, they became soft by over aging and transformed to α phase within the deformation band. The α particles in the band were sheared by {10\bar11}<SUB>α</SUB> twinning which direction was perpendicular to the band product. The twinning of α particles was regarded as a complementary deformation with volume change in the ω→α transformation. It was suggested that the occurrence of the band product consisted of β+α phases would not be directly connected with brittle fracture.

収録刊行物

  • Materials transactions, JIM  

    Materials transactions, JIM 38(12), 1067-1071, 1997-12-01 

    The Japan Institute of Metals

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各種コード

  • NII論文ID(NAID)
    10002454474
  • NII書誌ID(NCID)
    AA10699969
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09161821
  • NDL 記事登録ID
    4384535
  • 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  CJP引用  NDL  J-STAGE 
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