Effects of γ/γ lamellar interfaces on interlamellar crack propagation behaviors of TiAl alloys
作者： Changfeng Yan , Zhiyuan Rui , Rong Fu , Dechun Luo , Yun Dong
DOI: 10.1016/J.COMMATSCI.2021.110428
关键词:
摘要: Interlamellar fracture is one of the failure modes of fully lamellar (FL) TiAl alloys. Here, the effects of three types of γ/γ lamellar interfaces, which are termed true twin (TT), 120° rotational order fault (ROF), and pseudo-twin (PT), subjected to uniaxial tensile loading on the interlamellar crack propagation behaviors of an FL γ-TiAl alloy have been investigated by molecular dynamics method. The results show that the introduction of the PT and ROF interface weakens the tensile strength of single crystal TiAl, while the introduction of the TT …
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