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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 109 records · Page 6

Report on FY19 scoping creep and creep-fatigue testing on heat treated Alloy 709 base metal

Alloy 709 is a high temperature austenitic steel with potential for replacing Type 316 stainless steel. Efforts have been underway to lay the groundwork for an ASME code case by first refine the processing conditions to manufacture Alloy 709 plate. This effort continued into this year, as well as work examining the range of allowable solution annealing temperatures, the ability to recover material that was solution annealed at a temperature that was found to produce poor mechanical properties, and to examine the effects of pre-aging the material prior to testing.

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