Small Punch Creep Tests for Grade 92 Forgings
ECCC WG 3A report
This report has been prepared for the ECCC WG 3A as an in kind contribution of JRC. The report compares the creep strengths of two F92 forgings (Grade 92 steel) with differing heat treatments. The two heat treatments are normalizing and tempering and quenching and tempering. The comparison is entirely based on small punch creep (SPC) data analysis. The SPC test samples were extracted from different orientations of the bulk materials. The calculated equivalent stresses of the tests are converted using the equations recommended in the soon to be published small punch standard. Also, a new simplified method of determining the minimum deflection rate and deflection at minimum deflection rate is described and result in equal creep strength estimates. It is shown that the quenched and tempered steel is about 30% stronger than the normalized and tempered forging in short duration creep.
KAPPOU Eleni;
HOLMSTROM Bjorn;
2018-10-04
Publications Office of the European Union
JRC113068
978-92-79-93959-4 (online),
1831-9424 (online),
EUR 29360 EN,
OP KJ-NA-29360-EN-N (online),
https://publications.jrc.ec.europa.eu/repository/handle/JRC113068,
10.2760/12580 (online),
Additional supporting files
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