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Development of Centrifugal Formed Aluminum Alloys as a Viable Substitute for Forged or Wrought Components

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Overview: Describing the processing and cost benefits of centrifugal forming of Aluminum components, this paper presents the development of centrifugal formed Aluminum Alloys as a viable substitute for forged or wrought components. It states the chemical properties of Aluminum Alloys and explains the process of centrifugal casting, detailing how centrifugal forming also results in secondary refining of the liquid metal by forcing the non-metallic components to the inner diameter of the formed component. Requirements of traditional and forge or wrought casting processes regarding the chemical and structural properties of Aluminum Alloys are stated, explaining how centrifugal casting achieves efficient formation of components meeting or exceeding the chemical and structural properties of wrought materials. The paper also includes a graphical representation of the results of a series of comparative plane strain fracture toughness tests on similar shaped components produced by plate rolling and forging processes. TABLE OF CONTENTS 1. Centrifugal Formation of Alloys 2 2. Secondary Refining 2 3. Production of Aluminum Alloys 3 4. Typical Components 4 5. Product Forms 5 6. Figures 6.1. Comparison of JC6061-T6, 6061-T6 Forging, and 6016-T6 Plate Fracture Toughness Data 5