초록 ▼

A method is described for the production of bulk rapidly solidified metallic articles of near-net shape, by depositing multiple thin layers of feedstock using an energy beam to fuse each layer onto a substrate. The feedstock may be in the form of metal powder or wire. Different finished geometries a

A method is described for the production of bulk rapidly solidified metallic articles of near-net shape, by depositing multiple thin layers of feedstock using an energy beam to fuse each layer onto a substrate. The feedstock may be in the form of metal powder or wire. Different finished geometries are also described.

대표청구항 ▼

A method for producing metallic articles including the steps of: a. providing a starting substrate; b. providing a focused energy beam having sufficient energy to melt the substrate and directing this beam so that it strikes the substrate, thereby establishing an interaction zone; c. providing relat

A method for producing metallic articles including the steps of: a. providing a starting substrate; b. providing a focused energy beam having sufficient energy to melt the substrate and directing this beam so that it strikes the substrate, thereby establishing an interaction zone; c. providing relative motion between the energy beam and the substrate so as to control the interaction between the energy beam and the substrate so that surface melting of the substrate occurs without significant surface vaporization; d. introducing feedstock into the interaction zone in such a fashion that it combines with the surface melted region on the substrate and melts completely, with the volume of feedstock added being less than the volume of melted substrate material and with the melted zone solidifying rapidly after it leaves the interaction zone; and e. repeating steps (a) through (d) (with the substrate being the original substrate plus the added solidified feedstock material) to build up the desired article whereby each portion of the applied feedstock is melted more than once during the process.