論文
α -Mg/C14–Mg2Ca共晶合金クリープ材におけるMg2Ca層中の転位解析
2023 年 72 巻 2 号 p. 121-123
詳細
2023 年 72 巻 2 号 p. 121-123
The dislocations introduced during creep in the hard C14–Mg2Ca lamellae for the α-Mg/C14–Mg2Ca eutectic alloy were analyzed using high-resolution transmission electron microscopy. The isolated dislocations are introduced into C14 lamellae from the stress-concentrated α/C14 interface during creep and identified as α dislocation with the Burgers vector of 1/3[1120], supposing that all dislocations in the Mg2Ca phase split into partial dislocations. The introduced perfect dislocation is an α dislocation on the basal plane, which can dissociate into partial dislocations by the following reaction during creep; 1/3[1120]→1/3[1010]＋SF(0001)＋1/3[0110].
