By means of in-situ tensile test of the specimen of bi-morphic alloys of γ-TiAl, observation upon its corresponding fracture surface with scanning electron microscope, and finite element computation, the tensile fracture mechanism of these alloys is investigated. 通过对双态组织的扫描电镜原位拉伸实验、相应的断裂表面观察以及有限元计算,研究了TiAl基合金双态组织拉伸的断裂机理。
The PBD algorithm needed to simultaneously estimate the specimen function and the parameters of the PSF, while the PSF model was complicated, needed a large number of computation and converged slowly. 由于PBD算法需要在估计样本函数的同时估计PSF的参数,一般采用的PSF的模型较为复杂,计算量大,收敛慢;