[G] Mechanical Properties of Materials and Sturucture (2)

[42] Creep Behavior of TiAl Based Alloys Containing α_2/γ Lamellar and γ Grains as Microstructure Constituents

Yuro KINO¹, Ryosuke YAMAGATA², Hirotoyo NAKASHIMA², *Masao TAKEYAMA² (1. School of Materials and Chemical Technology, Tokyo Institute of Technology (Graduate student), 2. School of Materials and Chemical Technology, Tokyo Institute of Technology)

Keywords:TiAl基合金、クリープ

α_2/γラメラ粒とγ粒の体積率を大きく変化させたTiAl基合金のクリープ特性を定応力試験にて調査した．α_2/γラメラ粒界へのγ粒の導入はクリープ加速の早期開始をもたらし，最小クリープ速度を増加させる．