Formation and Growth of Stacking Fault Tetrahedra in Ni via Vacancy Aggregation Mechanism
Abstract
Using molecular dynamics simulations, the formation and growth of stacking fault tetrahedra (SFT) are captured by vacancy cluster diffusion and aggregation mechanisms in Ni. The vacancytetrahedron acts as a nucleation point for SFT formation. Simulations show that perfect SFT can grow to the next size perfect SFT via a vacancy aggregation mechanism. The stopping and range of ions in matter (SRIM) calculations and transmission electron microscopy (TEM) observations reveal that SFT can form farther away from the initial cascade-event locations, indicating the operation of diffusion-based vacancy-aggregation mechanism.
- Authors:
-
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Wyoming, Laramie, WY (United States)
- Univ. of Michigan, Ann Arbor, MI (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Energy Frontier Research Centers (EFRC) (United States). Energy Dissipation to Defect Evolution (EDDE)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1286924
- Alternate Identifier(s):
- OSTI ID: 1359852
- Grant/Contract Number:
- AC05-00OR22725; AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Scripta Materialia
- Additional Journal Information:
- Journal Volume: 114; Related Information: EDDE partners with Oak Ridge National Laboratory (lead); Lawrence Livermore National Laboratory; University of Michigan; University of Tennessee; University of Wisconsin; University of Wyoming; Virginia Tech; Journal ID: ISSN 1359-6462
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 74 ATOMIC AND MOLECULAR PHYSICS; Molecular dynamics; stacking fault tetrahedra; diffusion; vacancies
Citation Formats
Aidhy, Dilpuneet S., Lu, Chenyang, Jin, Ke, Bei, Hongbin, Zhang, Yanwen, Wang, Lumin, and Weber, William J. Formation and Growth of Stacking Fault Tetrahedra in Ni via Vacancy Aggregation Mechanism. United States: N. p., 2015.
Web. doi:10.1016/j.scriptamat.2015.12.020.
Aidhy, Dilpuneet S., Lu, Chenyang, Jin, Ke, Bei, Hongbin, Zhang, Yanwen, Wang, Lumin, & Weber, William J. Formation and Growth of Stacking Fault Tetrahedra in Ni via Vacancy Aggregation Mechanism. United States. https://doi.org/10.1016/j.scriptamat.2015.12.020
Aidhy, Dilpuneet S., Lu, Chenyang, Jin, Ke, Bei, Hongbin, Zhang, Yanwen, Wang, Lumin, and Weber, William J. Tue .
"Formation and Growth of Stacking Fault Tetrahedra in Ni via Vacancy Aggregation Mechanism". United States. https://doi.org/10.1016/j.scriptamat.2015.12.020. https://www.osti.gov/servlets/purl/1286924.
@article{osti_1286924,
title = {Formation and Growth of Stacking Fault Tetrahedra in Ni via Vacancy Aggregation Mechanism},
author = {Aidhy, Dilpuneet S. and Lu, Chenyang and Jin, Ke and Bei, Hongbin and Zhang, Yanwen and Wang, Lumin and Weber, William J.},
abstractNote = {Using molecular dynamics simulations, the formation and growth of stacking fault tetrahedra (SFT) are captured by vacancy cluster diffusion and aggregation mechanisms in Ni. The vacancytetrahedron acts as a nucleation point for SFT formation. Simulations show that perfect SFT can grow to the next size perfect SFT via a vacancy aggregation mechanism. The stopping and range of ions in matter (SRIM) calculations and transmission electron microscopy (TEM) observations reveal that SFT can form farther away from the initial cascade-event locations, indicating the operation of diffusion-based vacancy-aggregation mechanism.},
doi = {10.1016/j.scriptamat.2015.12.020},
journal = {Scripta Materialia},
number = ,
volume = 114,
place = {United States},
year = {Tue Dec 29 00:00:00 EST 2015},
month = {Tue Dec 29 00:00:00 EST 2015}
}
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Works referencing / citing this record:
Classical interatomic potential for quaternary Ni–Fe–Cr–Pd solid solution alloys
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