Abstract: Disclosed is a method for preparing a heterogeneous metal composite structure for medical implantation, including the steps of: step 1, preparing titanium alloy powder into a porous skeleton according to different printing strategies; step 2, filling magnesium after being melted into pores of the porous skeleton; and step 3, cooling a titanium-magnesium interpenetrating phase composite structure prepared in step 2 to room temperature, and covering a surface of the titanium-magnesium interpenetrating phase composite structure with a hydroxyapatite coating. In the present disclosure, a porous lattice dot-array structure of titanium alloy is used as a skeleton, and the skeleton pore is filled by pressureless infiltration of magnesium or hot isostatic pressure.

Abstract: A cryogenic laser shock device and method are provided. The device includes a cooling box, a transition chamber, a laser shock chamber, and a master control system. In the method, a sample is cooled by the cooling box, a temperature of the sample is measured in real time by a cryogenic probe, gas in the cooling box is pumped out after the temperature of the sample is stabilized to a set temperature, the cooling box is moved to the laser shock chamber in a vacuum state, and a cryogenic laser shock is implemented through cooperation of a mechanical arm and a three-dimensional motion platform.

Abstract: The present disclosure provides a laser peen forming device and method with an adjustable absorbing layer. The laser peen forming device with the adjustable absorbing layer includes a laser peening system, an x-y-z three-axis machining platform, and a working tank, where the working tank is secured on the x-y-z three-axis machining platform; the laser peening system is located above the working tank; a laser irradiation system and a three-dimensional information acquirer are further arranged above the working tank; a workpiece, a tool anode, a heating device, and a temperature sensor are arranged in the working tank; the workpiece is connected to a cathode of an electric box; the tool anode is connected to an anode of the electric box; the tool anode is located above the workpiece and keeps a predetermined distance from the workpiece; and the working tank is connected to a phosphating solution flowing system.