Recent Developments In Welding Thick Titanium Plate
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Author | : R. E. Monroe |
Publisher | : |
Total Pages | : 26 |
Release | : 1965 |
Genre | : Titanium |
ISBN | : |
This memorandum represents a combined effort by the U.S. Naval Applied Science Laboratory, Brooklyn, New York, and the Defense Metals Information Center to summarize new information on welding thick Ti plate. Thick plate of Ti continues to be of interest to the aerospace and defense industries for possible use in submersibles, armored vehicles, large space boosters, high-speed aircraft, and for pressure vessels. This memorandum generally is limited to information on welding Ti plate that is (1) at least 1 in. thick and (2) that is not covered by DMIC Report 185, The Status and Properties of Titanium Alloys for Thick Plate, June 14, 1963. The general requirements for welding Ti are not repeated here, since they are well documented in references mentioned in the inroduction to the memorandum. Sections have been prepared to cover material developments, welding-process developments, weld properties, and residual welding stresses. (Author).
Author | : P. J. Rieppel |
Publisher | : |
Total Pages | : 62 |
Release | : 1960 |
Genre | : Airplanes |
ISBN | : |
Author | : J. SAVAS |
Publisher | : |
Total Pages | : 1 |
Release | : 1961 |
Genre | : |
ISBN | : |
Testing was completed on the first 2 experimental weldments of 2-in.-thick, commercially pure Ti plate. The 3rd, 4th, and 5th sets of the 2-x 4x 24-in. plates, which were machined to a number of variations of a modified double-V joint design, were welded, radiographed, sectioned, and tested. An optimum modified double-V joint design was decided upon for the machining and welding of the 2-x 15-x 30-in. plates into a 2-x 30-x 30-in. weldment. The best welding techniques developed during the welding of the first 5 experimental weldments were used. The X-ray radiograph of the weldment showed it to be free from porosity, cracks, and other defects capable of detection by this means of non-destructive inspection. (Author).
Author | : R. A. Wood |
Publisher | : |
Total Pages | : 16 |
Release | : 1961 |
Genre | : Titanium alloys |
ISBN | : |
Research activity on Ti-13V-11Cr-3Al, Ti-8Al1Mo-1V, and Ti-8Al-10V alloys for both high and low temperature applications is reviewed. Mechanical properties, heat treatments and processing techniques are briefly discussed. Sources of information on new developments are indicated.
Author | : J. J. Vagi |
Publisher | : |
Total Pages | : 20 |
Release | : 1961 |
Genre | : Metal-work |
ISBN | : |
Author | : Herbert W. Mishler |
Publisher | : |
Total Pages | : 26 |
Release | : 1964 |
Genre | : Titanium |
ISBN | : |
Author | : J. M. Ferguson |
Publisher | : |
Total Pages | : 22 |
Release | : 1968 |
Genre | : Titanium |
ISBN | : |
Experimental programs concerned with the oxidation of titanium and its alloys are reviewed and results compared with those predicted by theory. Wagner-Hauffe theory is used as the primary basis for comparison, and its inconsistencies are pointed out. Fifteen binary alloy systems involving titanium are covered, as well as a few ternary and commercial alloys. A short section discusses the effects of oxygen or nitrogen contamination on the mechanical properties of titanium and its alloys. (Author).
Author | : NAVAL APPLIED SCIENCE LAB BROOKLYN N Y. |
Publisher | : |
Total Pages | : 17 |
Release | : 1964 |
Genre | : |
ISBN | : |
Suitable out-of-chamber, manual and semi-automatic welding techniques have been developed for the fabrication of a titanium alloy pressure box of the type required for low cycle fatigue studies at the Marine Engineering Laboratory. These techniques may also be used for fabricating complex structural elements of heavy plate titanium. (Author).
Author | : R. H. Ernst |
Publisher | : |
Total Pages | : 12 |
Release | : 1964 |
Genre | : Titanium |
ISBN | : |
A brief study of delayed fracture in a seam-welded titanium panel is summarized in this memorandum. Examination of the fracture surface with electron microscopy showed that the material cleaved, failing in a brittle manner. Although the nature of the embrittlement was not clearly defined, titanium hydride phase was suspected as a prime contributor to failure. Even though the hydrogen content of the titanium was only 65 ppm, hydride embrittlement was thought to have occurred from precipitation of hydride platelets on crystal planes oriented normal to welding stresses. Other work, briefly discussed in the memorandum, has confirmed that hydride platelets in titanium can be oriented by stress and that tensile ductility of Zircaloy (which behaves similarly with respect to hydrogen, to titanium) depends upon hydride orientation. Stress-relief annealing of welded titanium structures is recommended wherever possible to minimize embrittlement by stress-oriented hydrides. (Author).
Author | : |
Publisher | : |
Total Pages | : 70 |
Release | : 1967 |
Genre | : Titanium |
ISBN | : |