Local Structural Arrangement of Amorphous Al-Ni-Co Alloy during Uniaxial Tension: A Molecular Dynamics Study

Abstract

The local structural arrangement of the amorphous alloy system Al 45 Ni 50 Co 5 , subject to uniaxial tensile strain, was investigated using molecular dynamics simulation. The amorphous phase of the alloy system did not change in the process. The degree of icosahedral order quanti ed by the Honeycutt-Andersen structural type, 1551, plays an important role in the formation and expansion of the shear transition zones in this amorphous system. The structural types 1551, 1441, and 1661 are found to evolve during the deformation process.

Molecular Dynamics Simulation of Local Structure Evolution in Cu Amorphous during Uniaxial Tension and Compression

“…The 1561 and 1671 types slightly increase as tensile strain increase. Tensile deformation can transform 1551 to 1561, and 1661 to 1671, which discussed in one of our papers 20) . Combined 1551 change very small with 1561 slightly increase, we could be inferred that the tensile deformation help the formation of 1551 type in Cu amorphous system.…”