Cooling Times Dependence on The Glassy NiTi at Extremely Low Temperature: A Result From Rapid Solidification Using Molecular Dynamics Simulations
Alif Mahendra Bagus Nurcahyo(a), Rizal Arifin(a,b*), Muhammad Malyadi(a,b), Munaji(a,b), Ghulam Asrofi Buntoro(c), Ridwan(a), Alfiyan Sukron Huda(a), Frengky Vion Dwi Ariadhi(a)
a) Department of Mechanical Engineering, Universitas Muhammadiyah Ponorogo, Jl Budi Utomo No. 10 Ponorogo, 63471 Indonesia
*rarifin[at]umpo.ac.id
b) Center of Materials Engineering and Energy, Universitas Muhammadiyah Ponorogo, Jl Budi Utomo No. 10 Ponorogo, 63471 Indonesia
c) Department of Informatics Engineering, Universitas Muhammadiyah Ponorogo, Jl Budi Utomo No. 10 Ponorogo, 63471 Indonesia
Abstract
In this paper, we evaluate the structure of glassy NiTi at the temperature of 10 K obtained from molecular dynamics simulations by various cooling times. The final configurations of glassy NiTi were produced by decreasing the temperature of the liquid NiTi rapidly from 2500 K until 10 K during 0,1 ns to 1 ns of cooling times. We find in our result that the count of BCC-like and Icosahedral-like local structure increase at the longer cooling times, while the count of HCP-like local structure decrease when the cooling times become longer. We also observe that the count of FCC-like local structure almost remains constant for all cooling times variation.
Keywords: glassy NiTi, local structure, cooling times, molecular dynamics simulations
Topic: Computational and characterization of materials