Accession Number:

AD0612696

Title:

INVESTIGATION OF THE MECHANICAL CHARACTERISTICS OF ZONE-LEVELED BERYLLIUM.

Corporate Author:

BRUSH BERYLLIUM CO CLEVELAND OHIO

Report Date:

1965-01-01

Abstract:

Zone-leveling has been shown to produce beryllium single crystals of intermediate purity, having moderately high basal glide capacity, while retaining reasonably high strength. Properties of the zone-leveled crystals are dependent upon zone travel rate, but not upon the number of zone passes. The enhanced basal glide corresponds to an agglomeration of insoluble impurities, and a retention of the soluble elements in solid solution. The process results in some bulk purification, but does not alter significantly the plastic anisotropy of the crystals. Application of the zone-leveling concepts, in a modified manner, to commercial hot-pressed polycrystalline metal has resulted in an improvement in roomtemperature tensile elongation, with only minor strength alterations. The implication of these results is that a refinement of the thermal and chemical parameters involved in the process could possibly lead to a materially improved engineering metal of available purity, thus precluding the high-purity approach. Author

Descriptive Note:

Technical rept. for 1 Jan-30 Sep 64,

Supplementary Note:

Available copy will not permit fully legible reproduction. Reproduction will be made if requested by users of DDC. Copy is available for public sale.

Pages:

0070

Communities Of Interest:

Contract Number:

AF33 615 1177

File Size:

0.00MB

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