In situ atomic-scale observation of a novel lattice reorienting process in pure Ti

Zongde Kou; Yanqing Yang; Lixia Yang; Bin Huang; Xian Luo

doi:10.1016/j.scriptamat.2019.03.021

In situ atomic-scale observation of a novel lattice reorienting process in pure Ti

Zongde Kou, Yanqing Yang, Lixia Yang, Bin Huang, Xian Luo

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

A lattice reorienting process is observed in Ti at atomic resolution through in situ transmission electron microscope tensile test. A new orientational relationship is identified between matrix (M) and reoriented (R) lattice: [1¯21¯3] _R //[1¯21¯0] _M and (01¯11) _R //(0002) _M , which is distinct from the known twinning and “twinning-like” relationships in hexagonal close-packed metals. Molecular dynamics simulation results suggest that the reorienting process is accompanied by the evolution of grain boundary misfit dislocations to lattice dislocations, as well as by the transformation of (0002) basal to (01¯11) pyramidal plane. Atomic rearrangement analysis shows that the short-distance shuffling of atoms can accomplish the transformation.

Original language	English
Pages (from-to)	144-148
Number of pages	5
Journal	Scripta Materialia
Volume	166
DOIs	https://doi.org/10.1016/j.scriptamat.2019.03.021
State	Published - Jun 2019

Keywords

In situ HRTEM
Lattice reorientation
Molecular dynamics
Ti

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10.1016/j.scriptamat.2019.03.021

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title = "In situ atomic-scale observation of a novel lattice reorienting process in pure Ti",

abstract = " A lattice reorienting process is observed in Ti at atomic resolution through in situ transmission electron microscope tensile test. A new orientational relationship is identified between matrix (M) and reoriented (R) lattice: [1¯21¯3] R //[1¯21¯0] M and (01¯11) R //(0002) M , which is distinct from the known twinning and “twinning-like” relationships in hexagonal close-packed metals. Molecular dynamics simulation results suggest that the reorienting process is accompanied by the evolution of grain boundary misfit dislocations to lattice dislocations, as well as by the transformation of (0002) basal to (01¯11) pyramidal plane. Atomic rearrangement analysis shows that the short-distance shuffling of atoms can accomplish the transformation.",

keywords = "In situ HRTEM, Lattice reorientation, Molecular dynamics, Ti",

author = "Zongde Kou and Yanqing Yang and Lixia Yang and Bin Huang and Xian Luo",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2019",

month = jun,

doi = "10.1016/j.scriptamat.2019.03.021",

language = "英语",

volume = "166",

pages = "144--148",

journal = "Scripta Materialia",

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publisher = "Acta Materialia Inc",

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TY - JOUR

T1 - In situ atomic-scale observation of a novel lattice reorienting process in pure Ti

AU - Kou, Zongde

AU - Yang, Yanqing

AU - Yang, Lixia

AU - Huang, Bin

AU - Luo, Xian

PY - 2019/6

Y1 - 2019/6

N2 - A lattice reorienting process is observed in Ti at atomic resolution through in situ transmission electron microscope tensile test. A new orientational relationship is identified between matrix (M) and reoriented (R) lattice: [1¯21¯3] R //[1¯21¯0] M and (01¯11) R //(0002) M , which is distinct from the known twinning and “twinning-like” relationships in hexagonal close-packed metals. Molecular dynamics simulation results suggest that the reorienting process is accompanied by the evolution of grain boundary misfit dislocations to lattice dislocations, as well as by the transformation of (0002) basal to (01¯11) pyramidal plane. Atomic rearrangement analysis shows that the short-distance shuffling of atoms can accomplish the transformation.

AB - A lattice reorienting process is observed in Ti at atomic resolution through in situ transmission electron microscope tensile test. A new orientational relationship is identified between matrix (M) and reoriented (R) lattice: [1¯21¯3] R //[1¯21¯0] M and (01¯11) R //(0002) M , which is distinct from the known twinning and “twinning-like” relationships in hexagonal close-packed metals. Molecular dynamics simulation results suggest that the reorienting process is accompanied by the evolution of grain boundary misfit dislocations to lattice dislocations, as well as by the transformation of (0002) basal to (01¯11) pyramidal plane. Atomic rearrangement analysis shows that the short-distance shuffling of atoms can accomplish the transformation.

KW - In situ HRTEM

KW - Lattice reorientation

KW - Molecular dynamics

KW - Ti

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DO - 10.1016/j.scriptamat.2019.03.021

M3 - 文章

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SN - 1359-6462

VL - 166

SP - 144

EP - 148

JO - Scripta Materialia

JF - Scripta Materialia

ER -

In situ atomic-scale observation of a novel lattice reorienting process in pure Ti

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