热变形TiAl基合金中非平衡α2/γ与γ/γT 片层的 精细结构
来源期刊：中国有色金属学报1997年第3期
论文作者：张立春 王金国 陈国良 叶恒强
文章页码：94 - 98
关键词：TiAl合金 α2/γ片层 γ/γT 片层 高分辨电镜
Key words：TiAl-based alloy α2/γ lemellar γ/γT lamellar HREM
摘 要：利用常规和高分辨电镜(HREM)，研究了热形变Ti-45Al-8Nb-2.5Mn-0.05B (摩尔分数)合金中偏离严格取向关系的α2/γ片层与非严格孪晶关系的γ/γT 片层以及这些非平衡片层界面的精细结构，并提出了这些非平衡片层形成的可能位错反应机制。
Abstract: Theα2/γ lamellar deviating the strict orientation relationship and γ/γT lamellar without the strict twin relationship in a hot-deformed Ti-45Al-8Nb-2.5Mn-0.05B(mole percent) alloy were investigated by the conventional-electron microscopy and high-resolution electron microscopy (HREM), as well as the fine structures on these nonequilibrium interlamellar interfaces. The possible dislocation reactions of the nonequilibrium interface formation were also supposed.
