Methods for processing nanostructured ferritic alloys, and articles produced thereby

A method of forming a turbomachinery component comprising a nanostructured ferritic alloy, the method comprising the steps:

• forming a melt of an Fe—Ti—Cr alloy, processing the melt to form a powder of the alloy, milling the powder in the presence of an oxide to dissolve the oxide into the alloy to form a milled powder, wherein the oxide is yttrium oxide or yttrium oxide in combination with aluminum oxide and/or hafnium oxide;
• hot isostatic pressing the milled powder under an inert environment to form a hot isostatic pressed nanostructured ferritic alloy preform, and
• forging the nanostructured ferritic alloy preform into a turbomachinery component wherein the steps are performed in the absence of extrusion,
• wherein the hot isostatic pressing is performed in a temperature range of about 900° C. to about 1200° C. for at least about one hour under a pressure of at least about 20 ksi and the inert environment is vacuum to achieve a hot isostatic pressed preform having a thickness and
• wherein the forging is performed at a temperature of about 1000° C. to about 1200° C. to reduce the thickness by at least about 30%.