Open AccessDEVELOPMENT OF ODS HEAT EXCHANGER TUBING
Author(s) -
Mark A. Harper
Publication year - 2001
Language(s) - English
Resource type - Reports
DOI - 10.2172/809165
Subject(s) - welding , extrusion , materials science , metallurgy , explosion welding , alloy , rod , creep , heat exchanger , work (physics) , explosive material , composite material , mechanical engineering , arc welding , engineering , filler metal , medicine , alternative medicine , pathology , chemistry , organic chemistry
Work has begun under three major tasks of this project. With respect to increasing the circumferential strength of a MA956 tube, approximately 60 MA956 rods have been extruded using a 20:1 extrusion ratio and extrusion temperatures of 1000, 1075, 1150, and 1200 C. Also, creep testing is underway for the purpose of determining the ''stress threshold'' curves for this alloy. Regarding joining of the alloy MA956, work has begun on the friction welding, magnetic impulse welding, explosive welding, and transient liquid phase bonding aspects of this project. And finally, material is being prepared for the laboratory fire-side high temperature corrosion tests, with potential gas and deposits for a typical Vision 21 plant being reviewed for final determination of these variables in the test program