Effect of titanium on the creep deformation behaviour of 14Cr–15Ni–Ti stainless steel
| Autor: | S.L. Mannan, M. Nandagopal, M.D. Mathew, S. Latha, P. Parameswaran |
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| Rok vydání: | 2011 |
| Předmět: |
Dislocation creep
Nuclear and High Energy Physics Titanium carbide Materials science Silicon Metallurgy technology industry and agriculture chemistry.chemical_element equipment and supplies Stress (mechanics) chemistry.chemical_compound Nuclear Energy and Engineering chemistry Creep Deformation mechanism Volume fraction General Materials Science Titanium |
| Zdroj: | Journal of Nuclear Materials. 409:214-220 |
| ISSN: | 0022-3115 |
| DOI: | 10.1016/j.jnucmat.2010.12.240 |
| Popis: | 14Cr–15Ni–Ti modified stainless steel alloyed with additions of phosphorus and silicon is a potential candidate material for the future cores of Prototype Fast Breeder Reactor. In order to optimise the titanium content in this steel, creep tests have been conducted on the heats with different titanium contents of 0.18, 0.23, 0.25 and 0.36 wt.% at 973 K at various stress levels. The stress exponents indicated that the rate controlling deformation mechanism was dislocation creep. A peak in the variation of rupture life with titanium content was observed around 0.23 wt.% titanium and the peak was more pronounced at lower stresses. The variation in creep strength with titanium content was correlated with transmission electron microscopic investigations. The peak in creep strength exhibited by the material with 0.23 wt.% titanium is attributed to the higher volume fraction of fine secondary titanium carbide (TiC) precipitates. |
| Databáze: | OpenAIRE |
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