Abstract
New concepts in airframe materials, including powder metallurgy (P/M) alloys and metal matrix composites, have been offered to aircraft manufacturers. These new materials have been suggested as alternatives to conventional ingot metallurgy products now used in airframes. Aircraft manufacturers must evaluate these materials to determine their suitability for airframe use. The stability of the small uniform grain size of prospective P/M alloys was a major concern since some of the proposed fabrication processes involved elevated temperatures. These processes typically have caused grain growth and loss of material properties in ingot materials.A mechanically alloyed, non-heat-treatable, P/M aluminum alloy, IN-9051 is produced by the Novamet Division, MPD Technology Corporation, an Inco Company. Previous research had indicated that elevated temperatures might adversely affect this material's properties. The effect of 16 combinations of elevated temperatures (600-900° F) and times at temperature on the grain size of each of three different extrusions was measured. A similar, but abbreviated, program on sheet material rolled from these extrusions was also conducted.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call