Download Free Columbium And Tantalum Alloy Development Book in PDF and EPUB Free Download. You can read online Columbium And Tantalum Alloy Development and write the review.

As part of a project to develop refractory metal alloys suitable for high-temperature structural applications, the Bureau of Mines applied solid solution and precipitation-hardening techniques to columbium and tantalum alloys. Thirty three alloys were evaluated to determine their formability, strength, and oxdation resistance.
As part of a project to develop refractory metal alloys suitable for high-temperature structural applications, the Bureau of Mines applied solid solution and precipitation-hardening techniques to columbium and tantalum alloys. Thirty three alloys were evaluated to determine their formability, strength, and oxdation resistance.
The production of tubing from B-66 (Cb-5V-5Mo-iZr) and T-i 11 (Ta-8W-2Hf) requires the evaluationbf the extrudability of these alloys at high reduction ratios (i.e., 7:1). Starting billets are being clad in mild steel and will be extruded within the 0 2000-2200 F temperature range. Material for the extrusion evaluation has been procured. The tube blank size of 2" 0. D. x 1/4" thick wall will be extruded from a 4.22" 0. D x 1.30" thick wall starting billet. 0 B-66 tube blanks will be worked initially at 500-800 F and finish drawing operations will be done at room temperature. A portion of the B-66 billet material from the extrusion evaluation will be used for a warm drawing investigation. T-111 tube blanks will be processed at room temperature because of its excellent low temperature ductility. During the next quarter, it is planned that the extrusion parameters will be defined and extrusion of tube blanks completed. In addition, the warm drawing evaluation of B-66 will be initiated.