Tensile and Creep Testing of Sanicro 25 Using Miniature Specimens

0488813 - ÚFM 2019 RIV CH eng J - Článek v odborném periodiku
Dymáček, Petr - Jarý, Milan - Dobeš, Ferdinand - Kloc, Luboš
Tensile and Creep Testing of Sanicro 25 Using Miniature Specimens.
Materials. Roč. 11, č. 1 (2018), č. článku 142. E-ISSN 1996-1944
Grant CEP: GA ČR GA15-21394S; GA MŠMT(CZ) LQ1601
Institucionální podpora: RVO:68081723
Klíčová slova: Sanicro 25 * austenitic steel * miniature tensile test * creep * fracture
Obor OECD: Materials engineering
Impakt faktor: 2.972, rok: 2018

Tensile and creep properties of new austenitic steel Sanicro 25 at room temperature and operating temperature 700 °C were investigated by testing on miniature specimens. The results were
correlated with testing on conventional specimens. Very good agreement of results was obtained, namely in yield and ultimate strength, as well as short-term creep properties. Although the creep
rupture time was found to be systematically shorter and creep ductility lower in the miniature test, the minimum creep rates were comparable. The analysis of the fracture surfaces revealed similar
ductile fracture morphology for both specimen geometries. One exception was found in a small area near the miniature specimen edge that was cut by electro discharge machining, where an influence of the steel fracture behavior at elevated temperature was identified.
Trvalý link: http://hdl.handle.net/11104/0286666