BERYLLIUM RESEARCH AND DEVELOPMENT PROGRAM. Quarterly Progress Report for the Period July 1, 1960 to September 30, 1960
Work is reported on the preparation of pure beryllium metal by the iodide decomponition methcd. The ultrasonic welding of beryllium to beryllium, aluminum, copper, iron, and titanium is being investigated. An investigation is reported on the role of oxide and voids in beryllium. Work is reported on the factors that contribute to the brittle behavior of beryllium. Work was completed on the affects of surface damage in beryllium. Results showed that sunface damage introduced by machining resulted in lower mechanical properties. Removal of the surface dampage by chemical etching restored the properties. Work is being conducted to evaluate the room-temperature and elevated-temperature mechanical properties of silver-brazed beryllium lap joints as a function of brazing variables and post-braze treatment. The purification of beryllium by distillation from both liquid and solid phases is reported. A study is reported on aging and strain sging in extruded polycrystalline beryllium rod in terms of mechanical and microstructural paramaters. A study is being made of the effect of cold work, alloying, and heattreatment on the yield strength of beryllium sheet. (W.L.H.)
- Research Organization:
- Nuclear Metals, Inc., Concord, Mass.
- DOE Contract Number:
- AF33(616)-7065
- NSA Number:
- NSA-15-011455
- OSTI ID:
- 4078787
- Report Number(s):
- NMI-9505
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-61
- Country of Publication:
- United States
- Language:
- English
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