DEVELOPMENT OF HIGH-STRENGTH, ELEVATEDTEMPERATURE, CORROSIN-RESISTANT STEEL.
Abstract
Previous work on Cr-Mo-Co stainless steels resulted in the development of a new hardenable high-strength steel, AFC-77. AFC-77, which contains nominally 0.15C-14.5Cr-5Mo-0.4V-13Co, exhibits an excellent combination of properties from subzero to about 1200 F and thus extends significantly the service temperature range attainable with hardenable stainless steels. Under the present contract, the complex precipitation reactions that are responsible for the strength of the Cr-Co-Mo steels were studied in detail. Strengthening after tempering at temperatures up to about 900 F is related to the precipitation of carbides. Above 1000 F, the Fe2Mo Laves phase and the chi phase have been identified as the primary strengthening agents. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1963
- Accession Number
- AD0425593
Entities
People
- A. Kasak
- E. J. Dulis
- J. H. Moll
- V. K. Chandhok