JP2016023363A5 - - Google Patents

Claims (9)

A powder spreading step of spreading an alloy powder containing five kinds of elements of Al, Co, Cr, Fe and Ni in layers;
The spread alloy powder is locally heated and melted and then solidified to form a solidified structure, and a region to be heated by the local heating is moved in parallel to the surface on which the alloy powder is spread. A solidified layer forming step for forming a solidified layer,
A method for producing an alloy structure, wherein a plurality of layered solidified layers are formed by alternately repeating the powder spreading step and the solidified layer forming step. The method for producing an alloy structure according to claim 1, wherein a particle size distribution of the alloy powder is in a range of 1 µm to 500 µm. The method for producing an alloy structure according to claim 1, further comprising a step of removing the unmelted alloy powder after the solidified layer forming step. The said solidified layer shaping | molding process is equipped with the pre-heating process which heats the said alloy powder at the temperature of 50 to 80% of melting | fusing point of the said alloy powder before the melting of the said alloy powder. A method for manufacturing an alloy structure. 2. The alloy according to claim 1, wherein the solidified layer forming step includes a step of shape processing or surface processing at least a part of the solidified layer in a state where the surface temperature of the solidified layer is 500 ° C. or more. Manufacturing method of structure. 6. The shape processing or surface processing step uses a metal or alloy tool, or a diamond powder, an intermetallic compound powder, an inorganic or inorganic composite material tool. A method for manufacturing an alloy structure. 2. The method for producing an alloy structure according to claim 1, wherein the alloy powder contains the five elements in an atomic concentration range of 5 at% or more and 30 at% or less. 8. The method for producing an alloy structure according to claim 7, wherein the alloy powder has a difference in atomic concentration of at least four of the five elements within a range of less than 3 at%. The alloy powder contains at least four elements of Al, Co, Cr, Fe and Ni in an atomic concentration range of 15 at% or more and 23.75 at% or less, and contains another one element at 5 at%. 2. The method for producing an alloy structure according to claim 1, wherein the alloy structure is contained in an atomic concentration range of not less than 30% and not more than 30 at%.