| 1 | Stress-induced phase transformation and phase boundary sliding in Ti: An atomically resolved in-situ analysis显示文摘In-situ tensile experiments on pure Ti were performed in a transmission electron microscope at room temperature.The dynamic process of stress-induced hexagonal closed-packed(hcp)to face-centered cu-bic(fcc)structural transformation ahead of a crack tip was captured at the atomic level.Intriguingly,a sliding behavior of the ensuing(0001)hcp/(1¯11)_(fcc) phase boundary was observed to further accommodate the plastic deformation until crack initiation.The sliding was accomplished via the successive conserva-tive glide of extended dislocations along the(0001)hcp/(1¯11)_(fcc) phase boundary.A molecular dynamics simulation was carried out to corroborate the experiments and the results confirm the new dislocation-mediated sliding mechanism. | Zongde Kou Xuteng Li Rong Huang Lixia Yang Yanqing Yang Tao Feng Si Lan Gerhard Wilde Qingquan Lai Song Tang | 2023 | Journal of Materials Science & Technology2023，，21： | 0 |
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