A method comprising: generating a first layer of an integral object using a metallic material, wherein the integral object includes one or more interconnected components, and wherein the first layer is generated by heating the metallic material to a molten state such that the metallic material includes a solid-liquid interface; applying an electromagnetic field to the metallic material of the first layer such that the molten material is stirred, wherein the electromagnetic field perturbs the first layer causing one or more nucleation sites to form at the solid-liquid interface of the metallic material in the molten state; applying vibration to the metallic material of the first layer , wherein the vibration causes a relative shear motion of the metallic material in the molten state and one or more dendrites (132-136) growing in the metallic material in the molten state to fracture and detach resulting in an increase in the number of nucleation sites (140-144) at the solid-liquid interface of the metallic material, wherein applying vibration to the metallic material of the first layer includes sonic application in a range between 100 to 400 Hertz and ultrasonic vibration in a range between 20 to 45 Megahertz; and generating a second layer coupled to the first layer of the integral object , wherein generating the second layer increases a number of nucleation sites at the solid-liquid interface of the metallic material in the molten state, and wherein each nucleation site grows a crystal at a spatially-random orientation, wherein the second layer is deposited immediately on the first layer after the first layer receives the electromagnetic field and vibration. generating a first layer of an integral object using a metallic material, wherein the integral object includes one or more interconnected components, and wherein the first layer is generated by heating the metallic material to a molten state such that the metallic material includes a solid-liquid interface; applying an electromagnetic field to the metallic material of the first layer such that the molten material is stirred, wherein the electromagnetic field perturbs the first layer causing one or more nucleation sites to form at the solid-liquid interface of the metallic material in the molten state; applying vibration to the metallic material of the first layer , wherein the vibration causes a relative shear motion of the metallic material in the molten state and one or more dendrites (132-136) growing in the metallic material in the molten state to fracture and detach resulting in an increase in the number of nucleation sites (140-144) at the solid-liquid interface of the metallic material, wherein applying vibration to the metallic material of the first layer includes sonic application in a range between 100 to 400 Hertz and ultrasonic vibration in a range between 20 to 45 Megahertz; and generating a second layer coupled to the first layer of the integral object , wherein generating the second layer increases a number of nucleation sites at the solid-liquid interface of the metallic material in the molten state, and wherein each nucleation site grows a crystal at a spatially-random orientation, wherein the second layer is deposited immediately on the first layer after the first layer receives the electromagnetic field and vibration. <EOS>