- Cited by 10
Lei, T.J. DaCosta, L. Rangel Liu, M. Wang, W.H. Sun, Y.H. Greer, A.L. and Atzmon, M. 2019. Microscopic characterization of structural relaxation and cryogenic rejuvenation in metallic glasses. Acta Materialia, Vol. 164, Issue. , p. 165.
Küchemann, Stefan Liu, Chaoyang Dufresne, Eric M. Shin, Jeremy and Maaß, Robert 2018. Shear banding leads to accelerated aging dynamics in a metallic glass. Physical Review B, Vol. 97, Issue. 1,
Derlet, P.M. and Maaß, R. 2018. Thermally-activated stress relaxation in a model amorphous solid and the formation of a system-spanning shear event. Acta Materialia, Vol. 143, Issue. , p. 205.
Liu, Chaoyang and Maaß, Robert 2018. Elastic Fluctuations and Structural Heterogeneities in Metallic Glasses. Advanced Functional Materials, Vol. 28, Issue. 30, p. 1800388.
Wang, Yun-Jiang Du, Jun-Ping Shinzato, Shuhei Dai, Lan-Hong and Ogata, Shigenobu 2018. A free energy landscape perspective on the nature of collective diffusion in amorphous solids. Acta Materialia, Vol. 157, Issue. , p. 165.
Küchemann, Stefan Derlet, Peter M. Liu, Chaoyang Rosenthal, Daniel Sparks, Gregory Larson, William S. and Maaß, Robert 2018. Energy Storage in Metallic Glasses via Flash Annealing. Advanced Functional Materials, p. 1805385.
Derlet, P.M. and Maaß, R. 2018. Local volume as a robust structural measure and its connection to icosahedral content in a model binary amorphous system. Materialia, Vol. 3, Issue. , p. 97.
Maaß, R. and Derlet, P.M. 2018. Micro-plasticity and recent insights from intermittent and small-scale plasticity. Acta Materialia, Vol. 143, Issue. , p. 338.
Peng, Chuan-Xiao Şopu, Daniel Song, Kai-Kai Zhang, Zhen-Ting Wang, Li and Eckert, Jürgen 2017. Bond length deviation in CuZr metallic glasses. Physical Review B, Vol. 96, Issue. 17,
Kim, Sunghwan and Ryu, Seunghwa 2017. Effect of surface and internal defects on the mechanical properties of metallic glasses. Scientific Reports, Vol. 7, Issue. 1,
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Using very long molecular dynamics simulations of duration up to a microsecond of physical time, temperature protocols spanning up to five orders of magnitude in time are performed to investigate thermally activated structural relaxation in a model binary amorphous solid. The simulations demonstrate significant local structural excitations (LSE) as a function of increasing temperature and show that enthalpy rather than internal potential energy is primarily responsible for relaxation. At low temperatures these LSE involve atoms whose displacements are smaller than a typical bond length, whereas at higher temperatures approaching that of the glass transition regime, bond-length displacements occur in the form of string-like motion where one atom replaces the position of another. Such thermally activated excitations are observed to mainly involve the smaller atom type. The observed enthalpy changes can be correlated with the level of internal hydrostatic stress homogenization and icosahedral content within the glassy solid.
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