Exploratory Study of Bend Ductility of Selected Refractory Metal Weldments
Abstract
Preliminary tests were made to determine the influence of welding method, purity of weld atmosphere, and subsequent heat treatment on the ductility of welded O.O3O-inch-thick sheets of columbium and tantalum base alloys, Cb-1 percent Zr, Cb-752, B-33, FS-85, D-43, T-111, and T-222, as measured by a room temperature bend test. Bead-on-plate welds were made on the materials by using the electron-beam process or by using the gas tungsten process in argon atmosphere containing either 2 to 4 ppm oxygen with the moisture level ranging from 5 to 19 ppm or approximately 100 ppm oxygen (moisture not monitored). Additional heat treatments and aging conditions similar to those that might be encountered during fabrication or use of these materials in test spacepower systems were imposed on some of the specimens before bending.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1965
- Accession Number
- ADA392807
Entities
People
- John H. Sinclair
Organizations
- National Aeronautics and Space Administration