Contrails
The goal of the Contrails project is to help preserve and disseminate the technical record of 20th century aerospace research, highlighting in particular the research endeavors of the Illinois Tech community.

Investigation Into the Tungsten-Rich Regions of the Binary Systems Tungsten-Carbon, Tungsten-Boron and Tungsten-Beryllium, Part II.

Report Number: ASD TDR 62-25 Part 2
Author: Goldschmidt, H. J.
Author: Ham, W. M.
Author: Oliver, D. A.
Author: Catherall, E. A.
Corporate Author: The B.S.A. Group Research Centre
Laboratory: AF Materials Laboratory
Date of Publication: 1963-07
Pages: 80
Contract: AF 61(052)-306
Project: 7351 - Metallic Materials
Task: 735101
AD Number: AD0418033

Abstract:
This report deals with the solid solubility of boron and of beryllium in tungsten, together with the attendant problems concerning the tungsten rich borides and beryllides in equilibrium with W, and which are liable to precipitate. Brief supplementary data are given on the W-C system, following the previous investigation. The study of the solubility of boron in tungsten shows this to be approximately 0.2 atomic %B at 2500 C, decreasing with temperature. The atomic nature of this solution presentsa special problem in that it can be interstitial and substitutional. W-W2 B forms a eutectic system, the eutectic temperature being about 2600 C. A high boron boron compound WB BEEN OBSERVED. In the tungsten-beryllium system which presented some special hazards which are described, the solu bility of Be in W is found to be approximately 5 atomic % Be at the eutectic temperature. The solubility limit does not vary appreciably down to 1800 C and decreases to about 3 atomic % Be in the 1000/1300 C range. The solid solution is substitutional, and lattice spacing variations are described.


Provenance:
Lockheed Martin Missiles & Fire Control
Download this report

(PDF, 2.84 MB, 80 pages)

Other options for obtaining this report

Via the Defense Technical Information Center (DTIC):
A record for this report, and possibly a full-image download of the report, exists at DTIC

Via National Technical Information Service:
This report may have been digitized and made freely available for public download, or made publicly available for purchase by the National Technical Information Service through their online database, the National Technical Reports Library

Indications of Public Availability
No digital image of an index entry indicating public availability is currently available
The inside cover of this report indicates that it was released for public sale