A dynamic compaction process comprising: forming a preform comprising: providing a first container, said first container having an interior and an exterior; filling said interior of said first container with a first powder material; sealing said first container; subjecting said exterior of said first container to an instantaneous dynamic compaction, wherein said instantaneous dynamic compaction applies pressure to the exterior of said first container resulting in said first container collapsing upon said first powder material; forming a solid powder metallurgy material encased by said first container; and removing said first container from said solid powder metallurgy material; attaching a second container to at least a portion of said preform, said second container having an interior and an exterior; filling said second container with a second powder material; sealing said second container; subjecting said exterior of said second container to an instantaneous dynamic compaction, wherein said instantaneous dynamic compaction applies pressure to the exterior of said second container resulting in said second container collapsing upon said second powder material; forming a second solid powder metallurgy material from said second powder material encased by said second container; bonding said second solid powder metallurgy material to said portion of said preform; removing said second container from said preform and said second solid powder metallurgy material; and forming a component from the combination of said preform bonded to said second solid powder metallurgy material wherein said component comprises a rotor having a hub and web portion (14, 18) formed from said first powder material and at least a portion of a rim portion formed from said second powder material, wherein said first solid powder metallurgy material and said second solid powder metallurgy material comprise different materials. forming a preform comprising: providing a first container, said first container having an interior and an exterior; filling said interior of said first container with a first powder material; sealing said first container; subjecting said exterior of said first container to an instantaneous dynamic compaction, wherein said instantaneous dynamic compaction applies pressure to the exterior of said first container resulting in said first container collapsing upon said first powder material; forming a solid powder metallurgy material encased by said first container; and removing said first container from said solid powder metallurgy material; providing a first container, said first container having an interior and an exterior; filling said interior of said first container with a first powder material; sealing said first container; subjecting said exterior of said first container to an instantaneous dynamic compaction, wherein said instantaneous dynamic compaction applies pressure to the exterior of said first container resulting in said first container collapsing upon said first powder material; forming a solid powder metallurgy material encased by said first container; and removing said first container from said solid powder metallurgy material; attaching a second container to at least a portion of said preform, said second container having an interior and an exterior; filling said second container with a second powder material; sealing said second container; subjecting said exterior of said second container to an instantaneous dynamic compaction, wherein said instantaneous dynamic compaction applies pressure to the exterior of said second container resulting in said second container collapsing upon said second powder material; forming a second solid powder metallurgy material from said second powder material encased by said second container; bonding said second solid powder metallurgy material to said portion of said preform; removing said second container from said preform and said second solid powder metallurgy material; and forming a component from the combination of said preform bonded to said second solid powder metallurgy material wherein said component comprises a rotor having a hub and web portion (14, 18) formed from said first powder material and at least a portion of a rim portion formed from said second powder material, wherein said first solid powder metallurgy material and said second solid powder metallurgy material comprise different materials.