TY - JOUR

T1 - Modeling of strength and ductility of metal alloy/graphene composites containing precipitates

AU - Бобылев, Сергей Владимирович

AU - Шейнерман, Александр Григорьевич

AU - Li, Xiaotao

AU - Zhang, Zhenjun

PY - 2024/6/1

Y1 - 2024/6/1

N2 - A model is suggested that describes plastic deformation of metal alloys reinforced with graphene. Within the model, the flow stress, yield and ultimate strength and the critical uniform elongation are calculated as functions of the structural parameters of the composites. It is demonstrated that a high strength of the composites requires that a significant part of grain boundary area should be occupied by graphene platelets, whereas grain size and platelet length exert small effects on the strength of the composites. It is shown that the addition of graphene can lead to a significant increase in strength at expense of a moderate decrease in ductility. Thus, the optimum graphene content should be high enough to provide a high proportion of grain boundary area occupied by graphene but still sufficiently small to avoid graphene agglomeration.

AB - A model is suggested that describes plastic deformation of metal alloys reinforced with graphene. Within the model, the flow stress, yield and ultimate strength and the critical uniform elongation are calculated as functions of the structural parameters of the composites. It is demonstrated that a high strength of the composites requires that a significant part of grain boundary area should be occupied by graphene platelets, whereas grain size and platelet length exert small effects on the strength of the composites. It is shown that the addition of graphene can lead to a significant increase in strength at expense of a moderate decrease in ductility. Thus, the optimum graphene content should be high enough to provide a high proportion of grain boundary area occupied by graphene but still sufficiently small to avoid graphene agglomeration.

KW - Composites

KW - Ductility

KW - Graphene

KW - Metal alloys

KW - Precipitates

KW - Strength

UR - https://www.mendeley.com/catalogue/3eeb4c05-ea2f-383c-811e-5af06d91f7f1/

U2 - 10.1016/j.ijsolstr.2024.112843

DO - 10.1016/j.ijsolstr.2024.112843

M3 - Article

VL - 296

JO - International Journal of Solids and Structures

JF - International Journal of Solids and Structures

SN - 0020-7683

M1 - 112843

ER -