从局域应力/应变视角理解异构金属材料的强韧化行为

范国华, 缪克松, 李丹阳, 夏夷平, 吴昊

Unraveling the Strength-Ductility Synergy of Heterostructured Metallic Materials from the Perspective of Local Stress/Strain

FAN Guohua, MIAO Kesong, LI Danyang, XIA Yiping, WU Hao

图7 梯度异构实现剪切带的非局域化[58,59]

Fig.7 Delocalization of shear bands achieved by gradient heterostructure[58,59] (a) contour maps of axial strain on nanostructured surface (X, Y, and Z are referred to transverse direction, loading direction, and normal direction, respectively)[58] (b) contour maps of axial strain on freestanding nanostructured surface (εy —strain component along loading direction)[59] (c) contour maps of axial strain on nanostructured surface supported by gradient heterostructured substrate[59]