Atomistic Investigation of Shock-Induced Amorphization within Micro-shear Bands in Hexagonal Close-Packed Titanium

Z. C. Meng; K. G. Wang; T. Ali; D. Li; C. G. Bai; D. S. Xu; S. J. Li; A. H. Feng; G. J. Cao; J. H. Yao; Q. B. Fan; H. Wang; R. Yang

doi:10.1007/s40195-024-01723-y

Atomistic Investigation of Shock-Induced Amorphization within Micro-shear Bands in Hexagonal Close-Packed Titanium

Z. C. Meng, K. G. Wang, T. Ali, D. Li, C. G. Bai^*, D. S. Xu, S. J. Li, A. H. Feng^*, G. J. Cao, J. H. Yao, Q. B. Fan, H. Wang^*, R. Yang

^*Corresponding author for this work

School of Material Science and Engineering

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

3 Citations (Scopus)

Abstract

The mechanical response of a single crystal titanium sample against (0001)_α surface impact was investigated using molecular dynamics simulation. Remarkably, non-uniform plastic deformation was observed in the sample. At high strain rates, amorphization occurred near the edge of the contact region where severe shear strain induced a large number of stacking faults (SFs) and dislocations. In contrast, the central part of the contact region underwent less deformation with significantly fewer dislocations. Moreover, instead of amorphization by consuming SFs and dislocations, there was a gradual increase in the density of dislocations and SFs during the process of amorphization. These local amorphous regions eventually grew into shear bands.

Original language	English
Pages (from-to)	1590-1600
Number of pages	11
Journal	Acta Metallurgica Sinica (English Letters)
Volume	37
Issue number	9
DOIs	https://doi.org/10.1007/s40195-024-01723-y
Publication status	Published - Sept 2024

Keywords

Amorphization
Molecular dynamics
Shear band
Shock compression
Titanium

Access to Document

10.1007/s40195-024-01723-y

Cite this

Meng, Z. C., Wang, K. G., Ali, T., Li, D., Bai, C. G., Xu, D. S., Li, S. J., Feng, A. H., Cao, G. J., Yao, J. H., Fan, Q. B., Wang, H., & Yang, R. (2024). Atomistic Investigation of Shock-Induced Amorphization within Micro-shear Bands in Hexagonal Close-Packed Titanium. Acta Metallurgica Sinica (English Letters), 37(9), 1590-1600. https://doi.org/10.1007/s40195-024-01723-y

@article{e47c19c31bff49a08e6cbf6b6d598882,

title = "Atomistic Investigation of Shock-Induced Amorphization within Micro-shear Bands in Hexagonal Close-Packed Titanium",

abstract = "The mechanical response of a single crystal titanium sample against (0001)α surface impact was investigated using molecular dynamics simulation. Remarkably, non-uniform plastic deformation was observed in the sample. At high strain rates, amorphization occurred near the edge of the contact region where severe shear strain induced a large number of stacking faults (SFs) and dislocations. In contrast, the central part of the contact region underwent less deformation with significantly fewer dislocations. Moreover, instead of amorphization by consuming SFs and dislocations, there was a gradual increase in the density of dislocations and SFs during the process of amorphization. These local amorphous regions eventually grew into shear bands.",

keywords = "Amorphization, Molecular dynamics, Shear band, Shock compression, Titanium",

author = "Meng, {Z. C.} and Wang, {K. G.} and T. Ali and D. Li and Bai, {C. G.} and Xu, {D. S.} and Li, {S. J.} and Feng, {A. H.} and Cao, {G. J.} and Yao, {J. H.} and Fan, {Q. B.} and H. Wang and R. Yang",

note = "Publisher Copyright: {\textcopyright} The Chinese Society for Metals (CSM) and Springer-Verlag GmbH Germany, part of Springer Nature 2024.",

year = "2024",

month = sep,

doi = "10.1007/s40195-024-01723-y",

language = "English",

volume = "37",

pages = "1590--1600",

journal = "Acta Metallurgica Sinica (English Letters)",

issn = "1006-7191",

publisher = "Springer International Publishing",

number = "9",

}

TY - JOUR

T1 - Atomistic Investigation of Shock-Induced Amorphization within Micro-shear Bands in Hexagonal Close-Packed Titanium

AU - Meng, Z. C.

AU - Wang, K. G.

AU - Ali, T.

AU - Li, D.

AU - Bai, C. G.

AU - Xu, D. S.

AU - Li, S. J.

AU - Feng, A. H.

AU - Cao, G. J.

AU - Yao, J. H.

AU - Fan, Q. B.

AU - Wang, H.

AU - Yang, R.

N1 - Publisher Copyright: © The Chinese Society for Metals (CSM) and Springer-Verlag GmbH Germany, part of Springer Nature 2024.

PY - 2024/9

Y1 - 2024/9

N2 - The mechanical response of a single crystal titanium sample against (0001)α surface impact was investigated using molecular dynamics simulation. Remarkably, non-uniform plastic deformation was observed in the sample. At high strain rates, amorphization occurred near the edge of the contact region where severe shear strain induced a large number of stacking faults (SFs) and dislocations. In contrast, the central part of the contact region underwent less deformation with significantly fewer dislocations. Moreover, instead of amorphization by consuming SFs and dislocations, there was a gradual increase in the density of dislocations and SFs during the process of amorphization. These local amorphous regions eventually grew into shear bands.

AB - The mechanical response of a single crystal titanium sample against (0001)α surface impact was investigated using molecular dynamics simulation. Remarkably, non-uniform plastic deformation was observed in the sample. At high strain rates, amorphization occurred near the edge of the contact region where severe shear strain induced a large number of stacking faults (SFs) and dislocations. In contrast, the central part of the contact region underwent less deformation with significantly fewer dislocations. Moreover, instead of amorphization by consuming SFs and dislocations, there was a gradual increase in the density of dislocations and SFs during the process of amorphization. These local amorphous regions eventually grew into shear bands.

KW - Amorphization

KW - Molecular dynamics

KW - Shear band

KW - Shock compression

KW - Titanium

UR - http://www.scopus.com/inward/record.url?scp=85198099945&partnerID=8YFLogxK

U2 - 10.1007/s40195-024-01723-y

DO - 10.1007/s40195-024-01723-y

M3 - Article

AN - SCOPUS:85198099945

SN - 1006-7191

VL - 37

SP - 1590

EP - 1600

JO - Acta Metallurgica Sinica (English Letters)

JF - Acta Metallurgica Sinica (English Letters)

IS - 9

ER -

Atomistic Investigation of Shock-Induced Amorphization within Micro-shear Bands in Hexagonal Close-Packed Titanium

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this