HIGH-TEMPERATURE AGING NICKEL- AND IRON-BASED ALLOYS
Abstract
Alloys of this kind began to be investigated in 1945-1946 in view of their applications to the development of aviation gas-turbine engineering. In this connection, the article surveys the principal results of the pertinent R+D work. Thus research into the effect of treatment with alloy elements on high- temperature alloys of the Kh20N80 and Kh15N35 types has made it possible to elucidate the effect of alloy elements displaying varying and variable solubility. High-temperature strength of these alloys is greatly affected by readily fusible impurities which enhance the adverse properties of grain boundaries. This can be offset and the grain boundaries can be toughened not only by using purer alloys but also by adding small amounts of chemically active alkali-earth, rare-earth metals, boron, etc. The vacuum arc and electroslag melting methods have recently been employed on an increasingly broader scale in the production of high-temperature alloys.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 10, 1969
- Accession Number
- AD0693458
Entities
People
- M. V. Pridantsev
Organizations
- National Air and Space Intelligence Center