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2. TiAl、Ti(Al_0.9Ti_0.1)和(Ti_0.9Al_0.1)Al合金中以超晶格内禀层错(SISF)为前缘分位错的变形模式(TW和SD_I)对应的广义层错能曲线

Fig.2. Generalized stacking fault energies (γ_GSFE) for the SISF partial dislocation leading deformation models (TW and SD_I) of TiAl, Ti(Al_0.9Ti_0.1) and (Ti_0.9Al_0.1)Al alloys (γ_SISF and γ_USISF, γ_CSF and γ_UCSF, γ_TW and γ_UTW, γ_APB and γ_UAPB stand for the stable and unstable stacking fault energy for SISF, CSF, TW, and APB, respectively)Color online