Fatigue strength of ultra-fine grained steels

Autor:	Masaaki Fujioka, Takashi Miyata, Tetsuya Tagawa, H. Miyata, M.D. Chapetti
Rok vydání:	2004
Předmět:	Materials science Mechanics of Materials Mechanical Engineering Metallurgy technology industry and agriculture food and beverages General Materials Science Ultra fine Condensed Matter Physics Fatigue limit Grain size Grain boundary strengthening
Zdroj:	Materials Science and Engineering: A. 381:331-336
ISSN:	0921-5093
DOI:	10.1016/j.msea.2004.04.055
Popis:	Fatigue strength of two ultra-fine grained steels (grain sizes 0.8 and 1 μm) was investigated. A coarse grained (grain size 12.5 μm) SM490 steel with a similar chemical composition was also analysed for comparison purpose. An important improvement on smooth fatigue strength was observed in ultra-fine grained steels and results obey the Hall-Petch relation usually observed between smooth fatigue limit and grain size. High fatigue notch sensitivity was observed and no improvement in fatigue limit of sharp notches is expected.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f599a22946f3dd2ac07d074ac357446c https://doi.org/10.1016/j.msea.2004.04.055 Zobrazit plný text záznamu Full Text from ScienceDirect