Graphene-containing high-crack-resistance high-manganese steel flux-cored wire and application thereof

The invention discloses a graphene-containing high-crack-resistance high-manganese steel flux-cored wire and application of the graphene-containing high-crack-resistance high-manganese steel flux-cored wire, a skin of the graphene-containing high-manganese steel flux-cored wire is a low-carbon steel strip coated with a graphene coating, and a flux core comprises, by mass, 0.2%-0.8% of C, 0.1%-0.8% of Si, 17%-32% of Mn, 1.5%-6.5% of Cr, 1.8%-5.5% of Ni, 0.5%-2.8% of Cu, 1.5%-3.5% of Mo, 0.2%-0.8% of Ti, 0.01%-0.09% of RE, 0.10%-0.95% of graphene and the balance atomized iron powder and inevitable impurities. The diffusible hydrogen content of the flux-cored wire is not larger than 1.5 mL/100g, the strength and toughness are improved while the crack resistance of weld metal is greatly improved, the welding process performance and the weld quality are good, and the flux-cored wire can be used for electric arc additive manufacturing of building, shipbuilding, railways, automobiles, aviation and spaceflight parts