Welding and weldability of directionally solidified single crystal nickel-base super-alloys

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Description

The objective of this CRADA project was to investigate the weldability of polycrystalline, directionally-solidified, and single-crystal, nickel-base super-alloys. These materials are used extensively in turbine engine components. The ability to weld these materials is highly desirable in that it would greatly facilitate component fabrication. Welding of these materials would also have the potential benefit of allowing for the repair of cracked or worn components. Specifically, the program had four objectives: (1) to evaluate the weldability of nickel-base super-alloys; (2) to characterize the solidification microstructure of the welds; (3) to evaluate the phase stability of the weldments during exposure to service ... continued below

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6 pages

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vitek, j.m. September 1, 1996.

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  • Oak Ridge Y-12 Plant
    Publisher Info: Oak Ridge Y-12 Plant, TN (United States)
    Place of Publication: Tennessee

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Description

The objective of this CRADA project was to investigate the weldability of polycrystalline, directionally-solidified, and single-crystal, nickel-base super-alloys. These materials are used extensively in turbine engine components. The ability to weld these materials is highly desirable in that it would greatly facilitate component fabrication. Welding of these materials would also have the potential benefit of allowing for the repair of cracked or worn components. Specifically, the program had four objectives: (1) to evaluate the weldability of nickel-base super-alloys; (2) to characterize the solidification microstructure of the welds; (3) to evaluate the phase stability of the weldments during exposure to service conditions; and (4) to determine the mechanical properties of the welds. Westinghouse Electric Corporation was to supply material for the program, in both as-case and heat-treated form. This was to include commercially available as well as experimental alloys developed at Westinghouse. ORNL was to perform weldability tests on the materials using a variety of welding procedures.

Physical Description

6 pages

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  • Other Information: PBD: 1 Sep 1996

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  • Report No.: Y/AMT-622
  • Report No.: Project Number 93-MULT-021-D1-4B
  • Grant Number: AC05-84OR21400
  • DOI: 10.2172/11013 | External Link
  • Office of Scientific & Technical Information Report Number: 11013
  • Archival Resource Key: ark:/67531/metadc622733

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • September 1, 1996

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • May 6, 2016, 2:11 p.m.

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vitek, j.m. Welding and weldability of directionally solidified single crystal nickel-base super-alloys, report, September 1, 1996; Tennessee. (digital.library.unt.edu/ark:/67531/metadc622733/: accessed December 15, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.