Development of Low-Cost,High-Strength Hot-Corrosion-Resistant Iron Aluminum-Base Alloys.

摘要

The report describes attempts to prepare Fe-Al-Mo alloys with sufficient high-temperature strength to be competitive with stainless steels for oxidizing and/or hot-corrosive environments and to provide competitive alternatives to superalloys based on domestically produced alloying elements. An 8percent aluminum alloy,which exhibited good room-temperature ductility,had superior strength at 815C and oxidation resistance equivalent to type 321stainless steel. High aluminum (12to 15percent) alloys showed outstanding oxidation resistance as high as 1,370C,but need more study to improve thermomechanical processing and strength.