Micron-sized 316L stainless steel formed by selective laser melting and preparation method of micron-sized 316L stainless steel

The invention discloses 316L stainless steel formed through micron-sized selective laser melting and a preparation method, and belongs to the technical field of intelligent manufacturing, the 316L stainless steel is manufactured through the micron-sized selective laser melting technology, the strategy of strip scanning and rotating is adopted in the preparation process, the width of a strip ranges from 0 mm to 10 mm, and the layer-by-layer rotating angle ranges from 10 degrees to 90 degrees. The process conditions adopted by the micron-sized selective laser melting technology are as follows: the laser power is 10 to 100W, the laser spot diameter is 10 to 35 microns, and the laser scanning speed is 100 to 2000mm/s; the distance between laser spots is 10-100 microns; and the thickness of the powder spreading layer is 5-20 microns. The superfine metal powder and the ultra-small light spot diameter are adopted for micron-sized selective laser melting, micron-sized ultrahigh-precision 3D printing of different meta