J. Mater. Sci. Technol. ›› 2020, Vol. 43: 220-229.DOI: 10.1016/j.jmst.2019.10.017
• Research Article • Previous Articles Next Articles
Wei Chena, Hande Wanga, Y.C. Linb, Xiaoyong Zhanga*(), Chao Chena, Yaping Lva, Kechao Zhoua
Received:
2019-07-27
Revised:
2019-09-06
Accepted:
2019-10-07
Published:
2020-04-15
Online:
2020-04-26
Contact:
Zhang Xiaoyong
Wei Chen, Hande Wang, Y.C. Lin, Xiaoyong Zhang, Chao Chen, Yaping Lv, Kechao Zhou. The dynamic responses of lamellar and equiaxed near β-Ti alloys subjected to multi-pass cross rolling[J]. J. Mater. Sci. Technol., 2020, 43: 220-229.
Fig. 1. Schematic processing routes for lamellar and equiaxed microstructures. The two microstructures were then subjected to cross rolling at 700 °C.
Fig. 8. (a), (c) BF images taken from the lamellar-CR samples processed at 20 % and 80 % rolling reduction, respectively. (b) high-resolution TEM micrograph (HRTEM) and the corresponding FFT image of the area selected in HRTEM image showing activation of the {1$\bar{1}$01} twin in the lamellar α phase in (a). (d) High-resolution TEM micrograph and the corresponding FFT image of the area selected in HRTEM image showing diffuse streaks along the $\langle 0 \bar{1}11\rangle ^{*}_{α}$ directions in the refined α phase in (c).
Fig. 9. (a) TEM BF image of the β-twinned region in the equiaxed-CR sample processed at 80 % rolling reduction. (b) The corresponding SAED pattern of the circled region in (a) along the [110]β zone axis showing the presence of two types of twins, namely {332}〈113〉 and {112}〈111〉 -type twins, in the twinned region. (c) Dark-field image obtained from {112}〈111〉 spot circled in yellow (DF1) and {332}〈113〉 spot circled in green (DF2) in (b).
Fig. 10. HAADF mapping images of the equiaxed-CR samples processed at 20 % rolling reduction, and the corresponding SAED pattern verified {1$\bar{1}$01} twin activated.
Fig. 11. HAADF mapping images of the equiaxed-CR samples processed at 50 % rolling reduction, and the corresponding SAED pattern verified {332}〈113〉 -type twin activated.
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