EFFECT OF LIQUID SODIUM ON ENDURING STRENGTH OF STRUCTURAL MATERIALS,
Abstract
The durable strength in liquid sodium and in air of EI-851 steel at 700 degrees, EI-869 alloy at 750 degrees and EI-437 B alloy at 800 degrees was determined. The absence of liquid metal effect on the durable strength and creep of EI-851 steel and EI-869 alloy was shown. The EI-437 B alloy revealed a reduction in durable strength and plasticity and an increase in rate of creep at all periods in a liquid metal medium. It was established that the dependence of time prior to destruction and rate of creep upon the stress applied to EI-437 B alloy in liquid metal is gradual, just as it is in air. It was shown, that the effect of liquid sodium on durable strength and creep of EI-437 B alloy at 800 degrees is determined by the adsorption properties of the medium. The detected adsorption effect of liquid metal confirmed the mechanism of overcreeping of dislocations under creep conditions. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 15, 1965
- Accession Number
- AD0611424
Entities
People
- G. P. Dykova
- V. I. Nikitin
Organizations
- National Air and Space Intelligence Center