第一性原理研究反位缺陷对<strong>TiAl</strong>基合金力学行为的影响

第一性原理研究反位缺陷对TiAl基合金力学行为的影响

吉宗威^1,^2,³,卢松³,于慧^1,⁴,胡青苗¹(

),Vitos Levente³,杨锐¹

First-Principles Study on the Impact of Antisite Defects on the Mechanical Properties of TiAl-Based Alloys

Zongwei JI^1,^2,³,Song LU³,Hui YU^1,⁴,Qingmiao HU¹(

),Levente Vitos³,Rui YANG¹

图7. 前缘分位错SISF和CSF的有效滑移势垒( $γ ˉ$ )随外加切应力方向(θ)的变化

Fig.7. Effective slip energy barriers ( $γ ˉ$ ) of the leading partial dislocations (SISF and CSF) as functions of the direction of the shear stress (θ ) (The critical angles for the transition from SISF to CSF are represented by the vertical lines)