Phase transformation and structural evolution in a Ti-5at.% Al alloy induced by cold-rolling

Bingqiang Wei^a, Song Ni^a, Yong Liu^a, Xiaozhou Liao^b, Min Song^a^,^*(

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Fig. 2.. (a) A bright-field TEM image of the R20 sample with another type of FCC lamella inside. (b) The SAED pattern taken from the interface of the HCP and FCC phases in (a), showing the HCP to FCC phase transformation with the OR of [0001]_HCP//[001]_FCC and (10$\bar{1}$0)_HCP//(110)_FCC. (c) An HRTEM image of the interface of the HCP and FCC phases, with the inset being a Fourier filtered image taken from the area marked by the square. (d) A bright-filed TEM image of a {101-2}<$\bar{1}$011> deformation twin, and the insets in the upper left and lower right corners are an SAED pattern and an HRTEM image of the {101-2}<$\bar{1}$011> twin, respectively.