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- W1646738446 abstract "ASTAR‐811C, a tantalum based alloy composition developed during the 1960s for space nuclear power applications was selected as a potential candidate material for use in the Nuclear Assembly Test (NAT). For a critical study of irradiation behavior, this alloy required the production of a pilot sized ingot to provide sufficient quantity of well characterized and traceable material. Forty five kilograms of ingot were produced by double consumable electrode vacuum arc melting with AC power. The production schedule closely followed the processing steps used when the alloy was first developed. Data obtained indicated that both composition control and mechanical behavior were similar to those recorded from the original material. A portion of the ingot was processed to 3.8‐mm thick plate and 0.76‐mm thick sheet to provide stock for miniature Charpy and notched tensile specimens. This demonstrated that while a relatively low yield resulted from forging operations, due to adverse shape factors, over 90% yield was obtained from secondary working. The paper describes details of the various melting and metalworking stages involved in production. It concludes that if large quantities of the ASTAR‐811C alloy are required, it can be produced within the necessary chemical specifications and within the capabilities of existing refractory metal producers." @default.
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- W1646738446 date "1992-01-01" @default.
- W1646738446 modified "2023-09-25" @default.
- W1646738446 title "The production of ASTAR-811C ingot, plate and sheet" @default.
- W1646738446 cites W848856968 @default.
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- W1646738446 doi "https://doi.org/10.1063/1.41818" @default.
- W1646738446 hasPublicationYear "1992" @default.
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