High Temperature Oxidation and Corrosion of In-Situ Composite Alloys.
Abstract
The high temperature oxidation and corrosion behavior of a number of direction-ally solidified eutectic alloys were studied in the temperature range 1600-2000 Degrees F; these include gamma/gamma prime-delta alloys and alloys containing Tantalum Carbide or Cr Sub 7 C sub 3 fibers. With all the alloys the important factor appears to be whether or not a fiber-free zone is established between the surface scale and the alloy eutectic structure, and this in turn depends in a complex way on temperature, the degree of alignment and spacing of the eutectic, and the composition of the alloy. Tantalum Carbide fibers are very oxidation prone, and alloys containing this phase have poor overall resistance; Cr sub 7 C sub 3 or delta (Ni sub 3 Nb) are not as detrimental. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1978
- Accession Number
- ADA064911
Entities
People
- D. M. Johnson
- D. P. Whittle
- J. Stringer
Organizations
- University of Liverpool