Accommodation and Microcracking in the Plate Martensite of Fe-C Alloys and Steels.
Abstract
The influence of microstructural parameters, such as austenitic grain size, martensite plate size, and martensite morphology, on microcracking in the plate martensite of high carbon steel and Fe-C alloys, has been evaluated by quantitative metallographic techniques and heat treatments designed to systematically vary the extent of microcracking. Austenitizing Fe-C alloys within the austenite-cementite field was found to reduce microcracking effectively partly because of a morphology change. Systematic refinement of austenitic grain size showed that microcracking could be eliminated in as-quenched plate martensite by the production of very fine grains. In specimens with fine and intermediate grain sizes, microcracks at prior austenitic grain boundaries made up a large fraction, up to one-half, of the total microcracking present. (Modified author abstract)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 22, 1973
- Accession Number
- AD0772075
Entities
People
- George Krauss
Organizations
- Lehigh University