Heat-Resistant Alloys for Ordnance Materiel and Aircraft and Naval Engine Parts (N-102): Part 2 - Cobalt and Nickel in 26% Cr Alloys
Abstract
In the investigation of heat-resisting alloys, the effects of nickel and cobalt have been studied in two groups of 26% Cr alloys, one series being essentially nonferrous and the other containing about 50% iron. The results of stress-strain-rupture tests at 1600 and 1800 deg F are given. Data from room temperature tension tests are included for materials as cast or after exposure to one of several aging treatments. In the absence of iron, the replacement of nickel by cobalt produces a marked strengthening at elevated temperatures. Creep testing of several compositions has been initiated to supplement the indications of stress-strain-rupture tests; two tests at 1800 deg F having been completed for this report. The microstructures of these alloys have been examined, and representative photomicrographs are shown.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 12, 1945
- Accession Number
- ADA801486
Entities
People
- Earnshaw Cook
- F. S. Gardner
- Howard S. Avery