[S1] S1.Martensite: Discover the future by studying past and present(2)

[S1.15] Ni-concentration dependence of self-accommodation microstructure of Ti-Ni and its dominant factors

*Gen HIKOSAKA¹, Yohei SOEJIMA², Hiroshi AKAMINE², Yuri SHINOHARA³, Minoru NISHIDA², Tomonari INAMURA⁴ (1. School of Materials and Chemical Technology, Tokyo Inst. of Technol., 2. Faculty of Engineering Sciences, Kyushu Univ., 3. Graduate School of Informatics and Engineering, The University of Electro-Communications, 4. IIR, Tokyo Inst. of Technol.)

Keywords:Ti-Ni、B2-B19'変態、熱弾性型マルテンサイト変態、自己調整組織、組織形成過程、ひずみ緩和機構、不適合性、rank-1接続、回位、すべり臨界応力

Ti-Ni合金のB2-B19'変態では晶癖面バリアントクラスター(HPVC)からなる自己調整組織を呈す．各HPVCの発生頻度にはNi濃度依存性があるが，本研究ではその支配因子を不適合性，すべり臨界応力の観点から検討した．