The Initiation of Long-Term Creep Rupture Tests on the First Alloy 709 Commercial Heat

Technical Report · Fri Sep 07 04:00:00 EDT 2018

DOI:https://doi.org/10.2172/1476397· OSTI ID:1476397

Wang, Hong ^[1]; Hawkins, C. Shane ^[1]; Disney, Eric C. ^[1]; Moser, Jeremy L. ^[1]

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1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

A systematic creep tests were conducted as part of a multi-lab effort to identify the material conditions for Alloy 709 Code Case Project. Nine candidate material conditions were studied with three melt conditions each with three S/A temperatures 1050, 1100 and 1150°C. The three melt conditions included AOD, ESR and ESR + Homogenization. The screening creep rupture tests were conducted under 600°C, 330MPa. AOD 1100 and ESR 1100 have been identified to be the top two material conditions for the Code Case project after a comprehensive evaluation. Long-term creep tests were initiated on AOD 1100 at the ORNL. The six creep tests were started at temperatures from 550 to 800°C, stresses from 38 to 309 MPa to target rupture time 60,000 hours. The loading strains agreed with those obtained from tensile tests at the corresponding temperatures.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Nuclear Energy (NE), Nuclear Reactor Technologies (NE-7)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1476397
• Report Number(s): ORNL/TM-2018/985
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE