A method of preparing a component article of a gas turbine engine comprising a metallic matrix having its constituent elements and a dispersoid distributed therein, comprising the steps of: furnishing at least one nonmetallic matrix precursor compound, all of the nonmetallic matrix precursor compounds collectively including the constituent elements of the metallic matrix in their respective constituent-element proportions; thereafter producing a mixture of an initial metallic material and the dispersoid, the step of producing including the step of: chemically reducing the matrix precursor compounds to produce the initial metallic material, without melting the initial metallic material; and consolidating the mixture of the initial metallic material and the dispersoid to produce a consolidated article having the dispersoid distributed in the metallic matrix comprising the initial metallic material, without melting the initial metallic material, without melting the dispersoid, and without melting the consolidated article; characterised in that: the dispersoid is either too thermodynamically stable (non-reducible) compared to the metallic matrix, or too chemically inert to be reduced by the process that reduces the matrix precursor compounds. furnishing at least one nonmetallic matrix precursor compound, all of the nonmetallic matrix precursor compounds collectively including the constituent elements of the metallic matrix in their respective constituent-element proportions; thereafter producing a mixture of an initial metallic material and the dispersoid, the step of producing including the step of: chemically reducing the matrix precursor compounds to produce the initial metallic material, without melting the initial metallic material; and consolidating the mixture of the initial metallic material and the dispersoid to produce a consolidated article having the dispersoid distributed in the metallic matrix comprising the initial metallic material, without melting the initial metallic material, without melting the dispersoid, and without melting the consolidated article; characterised in that: the dispersoid is either too thermodynamically stable (non-reducible) compared to the metallic matrix, or too chemically inert to be reduced by the process that reduces the matrix precursor compounds. chemically reducing the matrix precursor compounds to produce the initial metallic material, without melting the initial metallic material; and consolidating the mixture of the initial metallic material and the dispersoid to produce a consolidated article having the dispersoid distributed in the metallic matrix comprising the initial metallic material, without melting the initial metallic material, without melting the dispersoid, and without melting the consolidated article; characterised in that: the dispersoid is either too thermodynamically stable (non-reducible) compared to the metallic matrix, or too chemically inert to be reduced by the process that reduces the matrix precursor compounds. the dispersoid is either too thermodynamically stable (non-reducible) compared to the metallic matrix, or too chemically inert to be reduced by the process that reduces the matrix precursor compounds.