▎ 摘　　要

NOVELTY - Preparation of graphene-316L stainless steel involves mixing graphene powder and 316L-stainless steel powder to obtain graphene-316L-stainless steel mixed powder, and performing selective laser melting to form block to obtain graphene/316L stainless steel sample. The selective laser melting is performed by using 0.1-0.3 %mass graphene, at exposure time of 100-120 seconds, point distance of 45-50 m, power of 200-210 W, and laser energy density is controlled at 50 plus minus -2 J/mm3, and measured using laser energy density (Ev), laser power (P), scanning speed (v), scanning distance, paving thickness (t), scanning line point distance (d) and exposure time, and satisfy the specific formula (I) and density is stable at more than 99%. USE - Preparation of graphene-316L stainless steel (claimed). ADVANTAGE - The method enables preparation of graphene-316L stainless steel with improved yield strength which is increased by 28%, and tensile strength increased by 26%, and excellent corrosion resistance. DETAILED DESCRIPTION - Preparation of graphene-316L stainless steel involves mixing graphene powder and 316L stainless steel powder to obtain graphene-316L stainless steel mixed powder, and performing selective laser melting to form block. The selective laser melting is performed by using 0.1-0.3 %mass graphene, at exposure time of 100-120 seconds, point distance of 45-50 m, power of 200-210 W, and laser energy density is controlled at 50 plus minus 2 J/mm3, and measured using laser energy density (Ev, J/mm3), laser power (P, W), scanning speed (v, m/second), scanning distance (h, mm), paving thickness (t, mm), scanning line point distance (d, mm) and exposure time (second), and satisfy the formula: Ev = P/vht and v = d/( theta ) (I) and density is stable at more than 99%. An INDEPENDENT CLAIM is included for the graphene-316L stainless steel.