An experimental investigation was made to evaluate sheet material composed of a new nickel alloy strengthened "by dispersed thoria for aerospace applications in the temperature range from 1,800° F to 2,400° F. Mechanical-property tests were made at room and at elevated temperatures from 1,700° F to 2,570° F. The effect of preoxidation at various temperatures on the room-temperature tensile properties is also shown. One diffusion coating was evaluated to determine its effectiveness in reducing oxidation. Fabrication studies included machining, diffusion-bond joining, and several different welding processes. A description of the equipment and procedures utilized in performing the evaluation tests is also included. The metallurgical study included X-ray analysis and a microstructural examination of uncoated and coated sheet material.
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