Effect Of Creep Exposure On Mechanical Properties Of Rene 41 Part Ii Structural Studies Surface Effects And Re Heat Treatment
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Effect of Creep-exposure on Mechanical Properties of Rene' 41
Investigation of the influence of creep-exposure on the mechanical properties of Rene' 41 at room temperature was continued. The results showed that thermally-induced structural changes reduced the strength and ductility for exposures at temperatures from 1400 to 1800 F. Reduced yield strength was due mainly to a decrease in the measured volume fraction of gamma prime precipitate and secondarily to an increase in the gamma prime particle size. For the conditions studied, gamma prime was sufficiently stable up to 1400 F so that yield strength was not affected. Ductility was reduced by thermally-induced carbide precipitation in the grain boundaries in the temperature range from 1400 to 1800 F. Ductility reached a minimum after about 100 hr at 1700 to 1800 F and was not further decreased by creep. Creep had little effect on the gamma prime reactions.
A Review of the Air Force Materials Research and Development Program
Author: United States. Wright Air Development Division
language: en
Publisher:
Release Date: 1954
A review of the research and development work sponsored in the field of materials and processes over the past decade is presented. Abstracts of WADC Technical Reports for the period 1 July 1951 to 30 June 1953 are included. A summary of Technical Reports published in the areas of metallurgy, textiles, petroleum products, structural materials, rubbers, plastics, packaging, protective treatments, analysis and measurements are included also.
A Review of the Air Force Materials Research and Development Program
These reports cover basic and applied research in the materials area being conducted by the Metals and Ceramics, Non-metallic Materials, Physics, Manufacturing Technology and Applications Laboratories of the Directorate of Materials and Processes.