AN INVESTIGATION OF THE CRACK-PROPAGATION RESISTANCE OF HIGH-STRENGTH ALLOYS AND HEAT-RESISTANT ALLOYS
Abstract
Results are given of evaluations of tensile properties and crack-propagation properties of three nickel-base super alloys-Unitemp 1753, Inconel-X,AND Nimonic 90. The alloys, in the aged condition, were evaluated over a range of temperatures representing the usual operating range of each alloy. There was some indication of brittleness, based on fracture appearance, for the Unitemp 1753 in the temperature range from 1400 to 1700 F. The other two super alloys, InconelX and Nimonic 90, showed brittleness, both by fracture appearance and lowered net fracture stress, at elevated temperatures, from 1000 to 1500 F for the Inconel-X and from 1200 to 1500 F for Nimonic 90. Chemical composition, processing details, and measurements of localized tensile ductility for three molybdenum sheet materials-unalloyed molybdenum, TZM alloy, and Mo-0.5% Ti alloy are reported. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1961
- Accession Number
- AD0267552
Entities
People
- J.d. Morrison
- P.c. Jenkins
Organizations
- Southern Research