TY - JOUR
TI - First-principles study on the mechanical properties of Al2CuRu alloys under strain
AU - Qian Wen-Yu
AU - Chen Yu
JN - Thermal Science
PY - 2026
VL - 30
IS - 2
SP - 1047
EP - 1055
PT - Article
AB - In this paper, the mechanical properties of Al2CuRu were calculated by  applying uniaxial strain in the y-direction. Research findings indicate that  when the strain reaches -14% or 10%, the mechanical stability condition is  not met. Consequently, the present study focused exclusively on the  mechanical properties of Al2CuRu within the strain range of -13% to 9%. The  stress-strain curve of Al2CuRu under uniaxial strain was analysed, revealing  that strain applied in the y-direction resulted in significantly greater  stress in the y-direction compared to the x- and z-directions. When the  strain was between -4% and 2%, the stress-strain curve exhibited a  satisfactory linear pattern. However, when the strain exceeds 2% or -4%, a  slight non-linear phenomenon becomes evident. It was observed that Al2CuRu  exhibited elastic deformation without significant plastic deformation. It  was also found that stretching can adjust the elastic modulus of Al2CuRu,  reduce its Vickers hardness, and increase its ductility. The elastic modulus  has a large range of regulation. The adjustable range of bulk modulus and  Young’s modulus exceeds 160 GPa. The Al2CuRu has a relatively large range of  elastic deformation and is a typical plastic material. It is one of the  alternative materials for the super elastic alloy family. It is therefore  concluded that the mechanical properties of Al2CuRu can be regulated by  applying uniaxial strain, thus expanding the application range of Al2CuRu  materials.
DO - 10.2298/TSCI2602047Q
ER -