Strengthening of NiAl nanofilms by introducing internal stresses

Deformation behavior of perfect and imperfect nanomaterials made of intermetallic compounds with bcc lattice

“…Thus, it has been shown recently in a number of works that the similar with DNA deformation behavior can be observed in NiAl and FeAl intermetallic nanomaterials [25,27,[48][49][50].The current paper reviews the works devoted to molecular dynamics (MD) study of elastic deformation behavior of NiAl and FeAl nanofilms and nanowires using the atomic / molecular massively parallel simulator (LAMMPS) program package [51].…”

“…It has been demonstrated recently that residual stresses created by lattice defects in nanofilms can lead to their additional strengthening [27,52]. For example, it has been found that the notched NiAl nanofilm can be strengthened by introducing residual compressive stresses in the outer parts of the nanofilm [27].…”

“…For example, it has been found that the notched NiAl nanofilm can be strengthened by introducing residual compressive stresses in the outer parts of the nanofilm [27]. This is achieved by introducing an array of prismatic dislocation loops in the inner part of the nanofilm.…”

“…Moreover, nanomaterials having the non-convex region in P(ε) curves and thus demonstrating the thermodynamic instability and negative rigidity during deformation can be affected by many factors, such as temperature [25,26], structure defects [27], etc. The possibility of the creation of thermodynamically stable composite materials with the use of inclusions with a negative stiffness has been demonstrated in [28,29].…”

Effect of temperature and Stone-Thrower-Wales defects on strength of carbon nanotubes

“…Благодаря уникально высокой прочности УНТ исполь-зуются для создания композиционных материалов, что позволяет повысить прочностные свойства матрицы композита. Так в работе [2] установлено, что добавле-ние 1% УНТ в полистирол, основанный на композитных пленках, приводит к увеличению прочности на 25%.Наиболее распространенным методом теоретическо-го изучения свойств наноразмерных материалов, в том числе нанотрубок, является компьютерное моделиро-вание, в частности, расчеты методами ab initio и моле-кулярной динамики (МД) [3][4][5][6][7][8]. С помощью атомисти-ческого моделирования в работе [3] авторы показали, что УНТ типа «кресло» обладают большей прочностью на сдвиг, чем УНТ типа «зигзаг».…”