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.

Development Of Columbium-Base Alloys

Report Number: WADC TR 57-344 Part 7
Author: Begley, Richard T.
Author: Godshall, John L.
Author: Stickler
Author: Buckman, R. William
Corporate Author: Westinghouse Electric Corp Pittsburgh PA
Laboratory: Directorate of Materials and Processes
Date of Publication: 1963-04
Pages: 107
Contract: AF 33(616)-6258
Project: 7351 - Metallic Materials
Task: 735101
AD Number: AD0410771

The influence of carbon additions on the proper ties of a complex niobium alloy, Nb-10W-5V-1Zr (B-77), was investigated. Carbon additions of 0.077 and 0.15 w/o refined the as-cast grain size and increased hardness. For the conditions of heat treatment investigated, the carbon level had no effect on the 1205 C (2200 F) stress rupture strength of B-77, but the carbon containing al loys had higher rupture strains than low carbon B-77. Heat treatment studies did not show any evidence of precipitation hardening effects, however solution annealed and cold rolled B-77 0.15 C material gave significantly higher hot hardness values than solution annealed materials, suggesting that carbide precipitation on disloca tions was contributing to high temperature strength. Preliminary data showed grain boundary sliding occurred in B-77 during creep testing at 1205 C (2200 F).

Lockheed Martin Missiles & Fire Control
Download this report

(PDF, 61.86 MB, 107 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

Related Reports

This report has the following parts/volumes: