The Effect of Strain Rate and Temperature on the Mechanical Behavior of Al/Fe Interface Under Compressive Loading

Chlouk, Zeina G. El; Shehadeh, Mutasem A.; Hamade, Ramsey F.

doi:10.1007/s11661-020-05709-0

Cited by 3 publications

(1 citation statement)

References 27 publications

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“…Therefore, in recent times, most of the tensile tests using MD simulation have been done at strain rates of 10 8 to 10 10 s −1 , which are very popular, computationally efficient, and can predict the experimental description of the considered systems 2,5,16,67 . Besides, high strain rates in MD simulations allow to study the mechanical behavior of materials under extreme loading conditions that may be difficult or impossible to obtain experimentally [80][81][82] . It has been reported that due to the variation of strain rates from low to high, there is a change mainly in the plastic phases of the stress-strain curves, which is responsible for the variation of ultimate tensile strength and toughness.…”

Section: Resultsmentioning

confidence: 99%

Crystal orientation-dependent tensile mechanical behavior and deformation mechanisms of zinc-blende ZnSe nanowires

Islam

Hasan

Islam

et al. 2023

Sci Rep

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Crystal deformation mechanisms and mechanical behaviors in semiconductor nanowires (NWs), in particular ZnSe NWs, exhibit a strong orientation dependence. However, very little is known about tensile deformation mechanisms for different crystal orientations. Here, the dependence of crystal orientations on mechanical properties and deformation mechanisms of zinc-blende ZnSe NWs are explored using molecular dynamics simulations. We find that the fracture strength of [111]-oriented ZnSe NWs shows a higher value than that of [110] and [100]-oriented ZnSe NWs. Square shape ZnSe NWs show greater value in terms of fracture strength and elastic modulus compared to a hexagonal shape at all considered diameters. With increasing temperature, the fracture stress and elastic modulus exhibit a sharp decrease. It is observed that the {111} planes are the deformation planes at lower temperatures for the [100] orientation; conversely, when the temperature is increased, the {100} plane is activated and contributes as the second principal cleavage plane. Most importantly, the [110]-directed ZnSe NWs show the highest strain rate sensitivity compared to the other orientations due to the formation of many different cleavage planes with increasing strain rates. The calculated radial distribution function and potential energy per atom further validates the obtained results. This study is very important for the future development of efficient and reliable ZnSe NWs-based nanodevices and nanomechanical systems.

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