This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Metastable Austenitic Steels with Ultra-High Strength and Toughness
Annotation ability available
Sector:
Language:
English
Abstract
A combination of chemical balancing and thermal-mechanical processing has led to a new class of high strength steels. These steels utilize the strain-induced austenite to martensite transformation to produce unusually good combinations of strength, elongation, toughness, and corrosion resistance. The principle behind enhanced elongation is discussed in terms of the increased work-hardening rate provided by the hard martensitic phase. The mechanism responsible for enhanced toughness is discussed in terms of the plastic energy absorption occurring during the transformation. It is further shown that elongation is three times greater, toughness may be two times greater in thin or thick sections, and corrosion resistance is an order of magnitude greater than the comparable properties of conventional, high-strength martensitic steels.
Topic
Citation
Gerberich, W., "Metastable Austenitic Steels with Ultra-High Strength and Toughness," SAE Technical Paper 690262, 1969, https://doi.org/10.4271/690262.Also In
References
- Zackay V. F. Parker E. R. Fahr D. Busch R. “The Enhancement of Ductility in High-Strength Steels.” ASM Trans. Quart 60 2 252 1967
- Gerberich W. W. Hemmings P. L. Zackay V. F. Parker E. R. “Interactions Between Crack Growth and Strain-Induced Transformation.” To be presented at Second International Conference on Fracture Brighton, England April 1969
- Gerberich W. W. “Current Trends in Testing Methods, Design, and Materials for Fracture Toughness.” Metals Eng. Quart., ASM 4 4 23 1964
- Irwin G. R. “Relation of Crack Toughness Measurements to Practical Applications.” Welding J. Res. Supp November 519S 1962
- Paris P. C. “The Fracture Mechanics Approach to Fatigue.” Proc. 1963 Sagamore Conf., Syracuse University Press 1964
- Challande J. “Corrosion Resistance of Metastable Austenitic Steels.” University of California Berkelye September 1968
- Nelson G. A. “Corrosion Data Survey.” Metals Handbook, American Society for Metals 1 569 1961