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- Title
EFFECT OF Ce ON THE MICROSTRUCTURE AND PROPERTIES OF 27Cr-4Mo-2Ni SUPER-FERRITIC STAINLESS STEEL WITH 800 °C AGING.
- Authors
Guang Yang; Chenglin Zhao; Dejun Li; Xiangwei Liao; Yang Li; Shen Sun
- Abstract
The influence of Ce additions on the micro structure and properties of 27Cr-4Mo-2Ni super-ferritic stainless steel during 800 °C aging was systematically investigated via thermodynamic calculations, microstructural characterizations, impact and corrosion measurements. The results indicated that with an increase of Ce content from 0.00 w/% to 0.050 w!%, AI2O3 wrapped by TiNb(CN) were gradually modified into CeAlOj wrapped by TiNb(CN), spheroidal CejCh, and CejChS, the ferrite grain was noticeable refined, the o phase changed from continuously distributed with a coarser size to dispersedly distributed with a tiny size accompanied by an increase in number, the impact toughness of super-ferritic stainless was improved at 25 °C, and the cleavage facets at the morphology of a fully brittle fracture becomes smaller, the uniform corrosion resistance of super-ferritic stainless steel to 40 <p/% H2SO4 were enhanced especially at 60 °C.
- Subjects
MICROSTRUCTURE; STAINLESS steel; THERMODYNAMICS; BRITTLE fractures; CORROSION &; anti-corrosives
- Publication
Materials & Technologies / Materiali in Tehnologije, 2024, Vol 58, Issue 3, p403
- ISSN
1580-2949
- Publication type
Article
- DOI
10.17222/mit.2023.1045