Phase transformation and stabilization of a high strength austenite
- Univ. of California, Berkeley
An investigation of the phase transformation and the austenite stabilization in a high strength austenite has been made. An Fe-29Ni-4.3Ti austenite age-hardened by ..gamma..'(Ni/sub 3/Ti) precipitates showed a further increase of strength after martensitic and reverse martensitic phase transformations. The stability of ausaged austenite as well as ausaged and transformation-strengthened austenite was improved significantly through an isothermal treatment at 500/sup 0/C. The M/sub s/ temperature of the strengthened austenite was restored to nearly that of annealed austenite while the austenite was hardened to R/sub C/ 41 through precipitation and phase transformations. The observed austenite stabilization is attributed to the formation of G.P. zones or short-range order of less than approximately 10 A size.
- OSTI ID:
- 6865656
- Journal Information:
- Metall. Trans., A; (United States), Journal Name: Metall. Trans., A; (United States) Vol. 7; ISSN MTTAB
- Country of Publication:
- United States
- Language:
- English
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