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of 54
pro vyhledávání: '"Chesser, Ian"'
In this work, we investigate the shape evolution of rotated, embedded, initially cylindrical grains (with [001] cylinder axis) in Ni under an applied synthetic driving force via molecular dynamics simulations and a continuum, disconnection-based grai
Externí odkaz:
http://arxiv.org/abs/2408.14752
Autor:
Chesser, Ian, Derlet, Peter M., Mishra, Avanish, Paguaga, Sarah, Mathew, Nithin, Dang, Khanh, Uberuaga, Blas Pedro, Hunter, Abigail, Fensin, Saryu
The microstructural evolution at and near pre-existing grain boundaries (GBs) and dislocations in materials under high radiation doses is still poorly understood. In this work, we use the creation relaxation algorithm (CRA) developed for atomistic mo
Externí odkaz:
http://arxiv.org/abs/2405.04633
Publikováno v:
Acta Materialia 257 (2023)
Atomistic computer simulations are applied to investigate the atomic structure, thermal stability, and diffusion processes in Al-Si interphase boundaries as a prototype of metal-ceramic interfaces in composite materials. Some of the most stable orien
Externí odkaz:
http://arxiv.org/abs/2301.11172
Recent grain growth experiments have revealed that the same type of grain boundary can have very different mobilities depending on its local microstructure. In this work, we use molecular dynamics simulations to quantify uncertainty in the reduced mo
Externí odkaz:
http://arxiv.org/abs/2211.08640
Autor:
Chesser, Ian, Mishin, Yuri
Grain boundary (GB) diffusion in polycrystalline materials is a physical phenomenon of great fundamental interest and practical significance. Although the accelerated ("short circuit") atomic transport along GBs has been known for decades, the curren
Externí odkaz:
http://arxiv.org/abs/2206.07830
Autor:
Liang, Zhao, Magar, Nishchal Thapa, Koju, Raj Kiran, Chesser, Ian, Zimmerman, Jonathan, Mishin, Yuri, Rabkin, Eugen
Publikováno v:
In Acta Materialia 1 September 2024 276
Publikováno v:
In Acta Materialia 15 August 2024 275
Publikováno v:
Acta Materialia, 2021
Atomistic simulations provide the most detailed picture of grain boundary (GB) migration currently available. Nevertheless, extracting unit mechanisms from atomistic simulation data is difficult because of the zoo of competing, geometrically complex
Externí odkaz:
http://arxiv.org/abs/2108.09340
Publikováno v:
Acta Materialia, 2021
It has been hypothesized that the most likely atomic rearrangement mechanism during grain boundary (GB) migration is the one that minimizes the lengths of atomic displacements in the dichromatic pattern. In this work, we recast the problem of atomic
Externí odkaz:
http://arxiv.org/abs/2101.12026
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