Accession Number : AD0406872


Title :   Metallic Materials, BERYLLIUM and Beryllium Alloys, RESEARCH AND DEVELOPMENT PROGRAM (volume 2)


Descriptive Note : Rept. for 1 Apr 1960-30 Sep 1961


Corporate Author : TEXTRON INC WEST CONCORD MA NUCLEAR METALS DIV


Personal Author(s) : Gelles, S H ; MacPherson, B M ; Magalski, R B ; O'Rourke, R G


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/406872.pdf


Report Date : Apr 1963


Pagination or Media Count : 227


Abstract : The report summarizes the work to make beryllium more useful as an Air Force structural material. The program was divided into eleven major efforts. Detailed abstracts of each program are presented. Two programs deal with the purification and evaluation of purified beryllium. In this effort it was found that high purity beryllium could be produced by a vacuum distillation process. Preparation of pure metal by decomposition of the iodide did not appear to be feasible. Four programs deal with the joining of beryllium. The feasibility of joining beryllium by ultrasonic welding was shown. The resistance spot welding program led to definition of the welding parameters, and to methods of altering the weld nugget structure and of eliminating cracking and porosity. The application of warm working in the form of roll-planishing improved to some extent the mechanical behavior of welds made by the Tungsten-arc Inert Gas (TIG) process. In the brazing effort, the optimum time and temperature for brazing beryllium with silver was defined and the effects of post-braze heat treatment on the room temperature and elevated temperature mechanical properties were determined. The remaining programs deal with the flow and fracture characteristics of beryllium and the effect of impurities and alloying additions.


Descriptors :   *FABRICATION , *BERYLLIUM , *DISTILLATION , SPECTROSCOPY , WELDING , METALLURGY , BRAZING , FORGING , PURIFICATION


Subject Categories : Inorganic Chemistry
      Metallurgy and Metallography
      Fabrication Metallurgy


Distribution Statement : APPROVED FOR PUBLIC RELEASE