论文部分内容阅读
本文应用固体与分子经验电子理论分析计算TiAl及加锰后的价电子结构．结果表明，锰能减弱TiAl的Al-Al共价键，便于位错开动并诱发孪生，使TiAl脆性有较大改善；同时锰也使TiAl的α及Gc增大．提高其抗脆断的均匀变形能力，使其塑性有所升高．
In this paper, solid-state and molecular empirical electronic theory was used to calculate the valence electron structures of TiAl and manganese. The results show that Mn can weaken the Al-Al covalent bond of TiAl, facilitate the dislocation to start and induce the twin, which can greatly improve the brittleness of TiAl. At the same time, the α and Gc of TiAl increase with the addition of manganese. Improve its resistance to brittle deformation of the uniform deformation, so that its plastic increased.