A two-bar thermal ratcheting procedure has been implemented to Alloy 617 at very high temperatures. The procedure is based on two bars tested on two coupled servo hydraulic machines to achieve equal displacement and constant total applied load, mimicking the behavior of a pressurized cylinder subjected to through wall thermal transients. The bars were heated and cooled out of phase to generate thermally induced loading superimposed on a constant mean stress. Scoping test results at slow heating and cooling rates are presented for different mean stresses and thermal histories.
Two-Bar Thermal Ratcheting for Alloy 617—Part I: Scoping Tests
Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received April 10, 2014; final manuscript received August 11, 2014; published online March 25, 2015. Assoc. Editor: Reza Adibi-Asl.
This manuscript has been coauthored by UT-Battelle, LLC, under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains, and by accepting the article for publication, the publisher acknowledges that the United States Government retains, a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this work, or allow others to do so, for United States Government purposes.
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Wang, Y., Sham, T., and Jetter, R. I. (June 1, 2015). "Two-Bar Thermal Ratcheting for Alloy 617—Part I: Scoping Tests." ASME. J. Pressure Vessel Technol. June 2015; 137(3): 031008. https://doi.org/10.1115/1.4028302
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