SB-04-1(003) Creep Behavior of Orthorhombic Ti_2AlNb Based Intermetallic Alloys(Intermetallics and Its Composites)

スポンサーリンク

概要

• 論文の詳細を見る

• For the purpose of studying the creep behavior of orthorhombic Ti_2AlNb (O-phase) based alloys, nine O-based alloys modified by V, Mo, or W were prepared. These alloys were heat-treated under various conditions. The creep tests were carried out at 650-750℃/310MPa in air, using a dead-weight creep-rupture machine. The activation energy of creep was calculated to be 327 to 416 kJ/mol, which showed that the creep process was controlled by a dislocation climb. The alloys modified by W exhibited lower steady-state creep rates and longer transient times than the alloys modified by Mo and V, which is thought to be due to the lower diffusion rate of W in O-based alloys. The transformation of β phase into O phase during creep test runs at temperatures lower than the aging temperature was responsible for the large transient creep strain in a β+O alloy. The effect of precipitate size on creep behavior is discussed.

• 一般社団法人日本機械学会の論文
• 2001-06-03

著者

• Nakazawa Shizuo

  Materials Engineering Laboratory National Institute For Materials Science

• HAGIWARA Masuo

  Materials Engineering Laboratory, National Institute for Materials Science

• TANG Feng

  3rd Research Group, National Research Institute for Metals

• NAKAZAWA Shizuo

  3rd Research Group, National Research Institute for Metals

• HAGIWARA Masuo

  3rd Research Group, National Research Institute for Metals

• Hagiwara Masuo

  Materials Engineering Laboratory National Institute For Materials Science

• Tang Feng

  Materials Engineering Laboratory National Institute For Materials Science

関連論文

• Creep Behavior of Orthorhombic Ti_2AlNb Based Intermetallic Alloys(Special Issue on Creep and Fatigue at Elevated Temperatures)
• SB-04-1(003) Creep Behavior of Orthorhombic Ti_2AlNb Based Intermetallic Alloys(Intermetallics and Its Composites)

スポンサーリンク